JPH11260253A - Display discharge electrode installation method of discharge display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a display discharge electrode installation method capable of properly preventing local sputtering of a dielectric layer on a display discharge electrode, in a discharge display device having a three-electrode structure. SOLUTION: While barrier plates are formed on an overcoat in a barrier plate forming process S4, multiple metal wires t compose multiple pairs of display discharge electrodes are so fixed on a frame at both their ends as to be aligned in parallel with one another along the plane in a metal wire welding process S71, and the metal wires each are coated with a dielectric coating in a glass powder sticking process S73 and a baking process S74. Then, a paste layer is formed on the overcoat in a sticking paste application process S6, the multiple coated metal wires fixed on the frame are so mounted on the overcoat as to be abutted on the top of the barrier plate in a direction perpendicular to the barrier plates in a metal wire arranging process S7, and the frame is positioned with respect to a back plate. In addition, by performing heat treatment in a heat treatment process S6, each of the multiple coated metal wires is stuck on the overcoat with help of a glass layer set in its cooling process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for arranging display discharge electrodes of a discharge display device.

[0002]

2. Description of the Related Art For example, a plurality of light-emitting sections (light-emitting units or cells) provided in a matrix in one direction and another direction orthogonal thereto in an airtight space formed between a pair of parallel flat plates, A plurality of pairs of discharge electrodes provided so that one pair is located in each of the plurality of light-emitting sections to selectively generate a discharge in the plurality of light-emitting sections; 2. Description of the Related Art There is known a discharge display device that displays a desired image such as a symbol, a graphic, or the like. For example, the luminescence of neon orange or the like accompanying the generation of plasma generated by gas discharge is directly used, or the luminescence of the phosphor excited by the ultraviolet light generated by the plasma provided in the luminescence compartment is provided. A plasma display panel (hereinafter, referred to as a PDP) to be used is such. Such a PDP is relatively easy to be thin and has a large display surface, and has a wide viewing angle and a fast response speed comparable to a cathode-ray tube. For example, a wall-mounted television can be configured by forming one pixel from three or four light-emitting sections provided with phosphors of three colors of red (RED), green (GREEN), and blue (BULE) to enable multicolor display. It is expected that a thin full-color display device such as that described above can be realized.

FIGS. 1 (a) and 1 (b) show an example of the above-mentioned PDP. FIG. 1 shows a configuration of an AC type surface discharge PDP 8 having a three-electrode structure described in, for example, Japanese Patent Application Laid-Open No. 3-78936. It is. In the figure, a plurality of light-emitting elements are formed in an airtight space formed between a front plate 10 and a rear plate 12 which are positioned in parallel with each other in a longitudinal direction by partitioning the partition wall 14 in a longitudinal direction. A plurality of discharge spaces 16 including sections 36 (indicated by dashed lines in the figure) are provided, and a plurality of write electrodes 18 passing between the partition walls 14 along one direction on the back plate 12 are provided. A low softening point glass (low melting point glass) such as borosilicate glass is provided on the front plate 10 along the other direction orthogonal to the one direction and arranged at predetermined intervals while being covered with the overcoat 32.
Dielectric layer 20 made of magnesium and magnesium oxide (MgO 2)
Are provided with a plurality of pairs of display discharge electrodes 24a and 24b covered with a protective film 22 made of, for example, a phosphor layer coated separately for each discharge space 16 on the inner surface of the back plate 12 and the surface of the partition wall 14. 26 are provided. The display discharge electrode 24 is formed of an ITO (Indium Tin Oxide) formed by a thin-film process or the like in order to generate a surface discharge in a wide range and to reduce the shading of the display light emitted through the front plate 10 as much as possible.
xide: Indium tin oxide) or ATO (AntimonTin Oxide)
: Antimony tin oxide) and Cr-Cu-Cr, Al, etc. provided on the transparent electrode 28 at the outer end position in the width direction for each pair to supplement the conductivity. Bus electrode (metal electrode) 30 made of thin film, thick film Ag, etc.
It is composed of In the drawing, reference numeral 34 denotes an undercoat for suppressing the reaction between the write electrode 18 made of thick film silver and the back plate 12 made of soda-lime glass when the back electrode 12 is made of soda-lime glass. The coat 32 also suppresses the reaction between the write electrode 18 and the phosphor layer 26. Therefore, these are not necessarily provided when the writing electrode 18 is made of a material having low reactivity.

According to the AC type surface discharge PDP 8 described above, a display discharge is generated by the pair of display discharge electrodes 24a and 24b.
On the other hand, a write discharge for selecting the light emitting section 36 is generated between one of the display discharge electrodes 24 and the write electrode 18. Therefore, since the display discharge electrode 24 for display discharge is covered by the dielectric layer 20, the display discharge electrode 24 is less likely to be deteriorated due to sputtering as compared with the DC type in which the display discharge electrode 24 is exposed to the discharge space. The phosphor layer 2 provided on the inner surface of the back plate 12
6, a display discharge is generated at a position separated from the fluorescent layer 2 by the collision of discharge gas and ions as compared with an opposed discharge PDP provided with a discharge electrode in the vicinity thereof.
6 is suppressed. In addition, because of the three-electrode structure, the light-emitting sections 36 are selected in a line-sequential manner by writing discharge in advance, and then a discharge sustaining voltage is applied to all the display discharge electrodes 24 all at once, so that the selected light-emitting sections 36 , The display discharge voltage can be reduced by the wall charges formed in the light-emitting section 36, and the decrease in luminance due to the increase in the number of pixels is suppressed as compared with the so-called simple matrix drive.

By the way, in the PDP 8 as described above, as shown in FIG.
Since the electrodes 4 are arranged on one plane, the distance (discharge distance) between the surfaces of the pair of display discharge electrodes 24a and 24b which are discharged and covered by the dielectric layer 20 and actually contributes to the discharge is uniform. do not become. Therefore, the electric field intensity on the surface of the dielectric layer 20 increases as the position inside the pair of display discharge electrodes 24a and 24b where the substantial discharge distance is minimized, and the discharge concentrates on the inner end portion. As a result, the protective film 22 and the dielectric layer 20 are locally sputtered by the discharge gas ions at the discharge-concentrated portion, as shown for the pair located at the center in the drawing, and Along with the grooves 38, a part of the protective film 22 substantially functioning as a cathode is covered with the low softening point glass constituting the dielectric layer 20 scattered by sputtering, so that the discharge characteristics change with time. Can be made to. That is, in the case of the AC type PDP having the surface discharge structure, when the phosphor layer 26 is provided, the deterioration can be suppressed, and the brightness can be improved while the display discharge voltage is reduced by using the three-electrode structure. Since the discharge distance cannot be made uniform, the discharge characteristics change with time due to local sputtering of the dielectric layer 20 and the protective film 22.

[0006] In the sputtering as described above, the gas pressure of the sealing gas is increased or the Xe concentration in the sealing gas is increased so as to suppress the diffusion of the discharge gas ions, and the thickness of the dielectric layer 20 is reduced. It is known that the thickness can be suppressed by setting an appropriate electric field strength, and a change in discharge characteristics due to sputtering can be suppressed by increasing the thickness of the protective film 22 [for example, the 8th. See pages 16 to 19 of Plasma Display Technical Symposium Materials (issued July 19, 1994)]. However, the electric field intensity distribution on the surface of the dielectric layer 20 is not improved by any of the methods, and the concentration of discharge on the end of the display discharge electrode 24 is not suppressed. Therefore, even if the traveling speed is reduced, the sputtering proceeds reliably, and a change in discharge characteristics inevitably occurs in the long term.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to suitably perform local sputtering of a dielectric layer on a display discharge electrode in a three-electrode discharge display device. It is an object of the present invention to provide a display discharge electrode disposing method which can be suppressed.

[0008]

In order to achieve the above object, the gist of the first invention is to provide a first direction and a first direction in an airtight space formed between a pair of parallel flat plates. A plurality of light-emitting sections provided along a second direction substantially orthogonal to the first direction; a partition partitioning the plurality of light-emitting sections from each other at least in the second direction; And a plurality of writing electrodes provided at positions between the partition walls to select a predetermined light emitting section to emit light, and a plurality of writing electrodes provided along the second direction covered with a dielectric layer. In a discharge display device including a plurality of pairs of display discharge electrodes for generating and maintaining a display discharge for causing a predetermined light emitting section to emit light, a method of disposing the plurality of pairs of display discharge electrodes at predetermined positions, (a) the pair of parallel flat plates A partition wall forming step of forming the partition walls at a uniform height on one surface, and (b) a plurality of metal wires for forming the plurality of pairs of display discharge electrodes along one plane and at a predetermined interval from each other. A fixing step of fixing to the opposite sides of a predetermined frame having a thermal expansion coefficient larger than the thermal expansion coefficient of the one parallel plate and the thermal expansion coefficient of the metal wires at both ends thereof so as to be arranged in parallel. (C) a metal wire coating step of individually coating the outer peripheral surface of the metal wire with the dielectric layer; and (d) applying a paste containing a predetermined insulating material to a predetermined position on one surface of the one parallel plate. And (e) applying the plurality of metal wires fixed to the frame-shaped body and covered with the dielectric layer, with the longitudinal direction of the plurality of metal wires in the second direction. In a direction along the inner side of the opposite side of the frame At the same time, the metal plate is placed on one surface of the one parallel flat plate from above so as to contact the top of the partition wall, and the frame-shaped body is positioned with respect to the one parallel flat plate, thereby forming the plurality of metal plates. A metal wire arranging step of arranging the wire at a predetermined position on one surface thereof, and (f) a predetermined temperature while the plurality of metal wires arranged on one surface of the one parallel flat plate are fixed to the frame. By performing a heat treatment, an insulating film is generated from the paste film, and each of the plurality of metal wires is directly or indirectly formed on one surface thereof by the insulating film cured in a cooling process of the heat treatment. And a heat treatment step for fixing.

[0009]

According to the first aspect of the present invention, when disposing the display discharge electrodes of the discharge display device having the three-electrode structure, in the partition forming step, the partition has a uniform height on one surface of one of the parallel flat plates. On the other hand, in the fixing step, the metal wires for forming a plurality of pairs of display discharge electrodes are arranged along one plane and in parallel with each other at a predetermined interval, so that the one end is formed on each of the two ends. In addition to being fixed to the flat plate and the opposite side of a predetermined frame having a larger thermal expansion coefficient than the metal wire, in the metal wire coating step, the outer peripheral surface of the metal wire is individually coated with a dielectric layer, and the paste In the applying step, a paste containing a predetermined insulating material is applied to a predetermined position on one surface of the one flat plate to form a paste film, and in the metal wire arranging step, the paste is fixed to a frame and each A plurality of metal wires covered with an electric conductor layer are arranged on one surface from above so that the longitudinal direction is in contact with the top of the partition wall at a position inside the opposing side of the frame in a direction along the second direction. A plurality of metal wires are arranged at predetermined positions on one surface by positioning the frame-shaped body with respect to one flat plate, and further, in the heat treatment step, a plurality of metal wires are placed. By performing a heat treatment at a predetermined temperature while being fixed to the frame, an insulating film is generated from the paste film, and each of the plurality of metal wires is directly formed on one surface by the insulating film which is cured in the cooling process. Or, they are indirectly fixed. for that reason,
The plurality of pairs of display discharge electrodes constituted by the plurality of metal wires are so formed that the outer peripheral surface is individually covered with a dielectric layer so as to abut on the top of the partition wall having a uniform height. Since the display discharge electrodes are provided in parallel with each other at predetermined intervals along the direction, the display discharge electrodes which are adjacent to each other and form a pair are provided with opposing surfaces. Therefore, since the display discharge is generated exclusively between the opposing surfaces, the distance between the electrode surfaces contributing to the discharge is substantially uniform, so that the surface discharge between the display discharge electrode surfaces located on one plane is performed. The distribution of the electric field intensity on the surface of the dielectric layer as described above and the local sputtering caused by the discharge concentration are suppressed. In this case, the plurality of metal wires are fixed to the one flat plate and the frame having a larger thermal expansion coefficient than the metal wire so as to be arranged in parallel with one another along a plane and at a predetermined interval. In this state, it is brought into contact with the top of the partition wall and is fixed on one surface of the flat plate. Therefore, the mutual interval is maintained at the predetermined interval, and the frame-shaped body is flattened based on the difference in thermal expansion coefficient between the flat board and the metal wire and the frame-shaped body during the heat treatment. By expanding the metal wires and applying appropriate tension to the metal wires, the plurality of metal wires are fixed to one surface of one of the flat plates in a state of being parallel to each other and being straight, respectively. The display discharge electrodes can be suitably arranged at predetermined intervals.

[0010]

A second aspect of the present invention for achieving the above object is to provide a first direction and a first direction in an airtight space formed between a pair of parallel flat plates. A plurality of light-emitting sections provided along a second direction substantially orthogonal to the first direction; a partition partitioning the plurality of light-emitting sections from each other at least in the second direction; A plurality of write electrodes for selecting a predetermined light-emitting section to emit light, and a plurality of write electrodes provided along the second direction and covered with a dielectric layer. In a discharge display device including a plurality of pairs of display discharge electrodes for generating and maintaining a display discharge for causing the predetermined light emitting section to emit light, a method of disposing the plurality of pairs of display discharge electrodes at predetermined positions. , (A)
A partition wall forming step of forming the partition walls at a uniform height on one surface of the pair of parallel flat plates, and (b ′) forming a plurality of metal wires for forming one of the plurality of pairs of display discharge electrodes. , Along one plane and in parallel with each other with a predetermined interval,
A fixing step of fixing to the opposite sides of a predetermined frame body having a thermal expansion coefficient larger than the thermal expansion coefficient of the one parallel plate and the thermal expansion coefficient of the metal wire at both ends thereof, and (c) the metal A metal wire coating step of individually coating the outer peripheral surface of the wire with the dielectric layer, and (d) applying a paste containing a predetermined insulating material to a predetermined position on one surface of the one parallel plate to form a paste film Paste application step, and (e) forming the plurality of metal wires fixed to the frame-shaped body and each covered with the dielectric layer in the shape of a frame so that their longitudinal direction is along the second direction. The body is placed from above on one surface of the one parallel plate so as to contact the top of the partition wall at a position inside the opposing side of the body, and the frame is positioned with respect to the one parallel plate. By doing, those multiple gold A metal wire arranging step of arranging the wire at a predetermined position on one surface thereof, and (f) a predetermined temperature while the plurality of metal wires arranged on one surface of the one parallel flat plate are fixed to the frame. By performing a heat treatment, an insulating film is generated from the paste film, and each of the plurality of metal wires is directly or indirectly formed on one surface thereof by the insulating film cured in a cooling process of the heat treatment. A heat treatment step for fixing, and (g) in parallel with the plurality of metal wires at a position separated by a predetermined distance in the height direction of the partition from the plurality of metal wires fixed to contact the top of the partition. And disposing the other of the plurality of pairs of display discharge electrodes in parallel with each other at a predetermined interval along the second direction.

[0011]

In this way, when disposing the display discharge electrodes of the discharge display device having the three-electrode structure, in the partition forming step, the partition has a uniform height on one surface of one of the parallel flat plates. On the other hand, in the fixing step, the plurality of metal wires for constituting one of the plurality of pairs of display discharge electrodes are arranged along one plane and in parallel with each other at a predetermined interval, so that the above-mentioned structure is formed at both ends thereof. While fixed to the opposite side of a predetermined flat body having a larger thermal expansion coefficient than one of the flat plate and its metal wire, in the metal wire coating step,
An outer peripheral surface of the metal wire is individually coated with a dielectric layer, and in a paste application step, a paste containing a predetermined insulating material is applied to a predetermined position on one surface of the one flat plate to form a paste film; In the line arranging step, the plurality of metal wires fixed to the frame and each covered with the dielectric layer are arranged such that their longitudinal directions are along the second direction and are opposite to the opposite sides of the frame. A plurality of metal wires are placed at predetermined positions on one surface by placing the frame-shaped body on one flat surface from above while placing the frame-shaped body on one flat surface so as to contact the top of the partition wall at the inner position. In addition, in the heat treatment step, by performing heat treatment at a predetermined temperature while the plurality of metal wires are fixed to the frame, an insulating film is generated from the paste film and cured in the cooling process. Each of the plurality of metal wires is directly or indirectly fixed on one surface thereof by the insulating film, and further, in the disposing step, the plurality of metal wires are fixed so as to contact the top of the partition wall. The other of the plurality of pairs of display discharge electrodes is arranged parallel to each other at a predetermined distance in the height direction of the partition wall along the second direction so as to be parallel to the plurality of metal wires at a position separated by a predetermined distance in the height direction of the partition wall. Provided. Therefore, one of the plurality of pairs of display discharge electrodes constituted by the plurality of metal wires is in contact with the top of the partition wall having a uniform height in a state where the outer peripheral surface is individually covered with the dielectric layer. The plurality of pairs of display discharge electrodes are provided in parallel with each other at a position spaced apart from the plurality of metal wires in the height direction of the partition while the plurality of pairs of display discharge electrodes are provided in parallel with each other at predetermined intervals along the second direction. Therefore, the display discharge electrodes forming a pair are vertically arranged in the height direction of the partition wall and are arranged substantially facing each other. Therefore, since the display discharge is generated exclusively between the opposing surfaces, the distance between the electrode surfaces contributing to the discharge becomes substantially uniform, so that the surface discharge is performed between the display discharge electrode surfaces located on one plane. As described above, the distribution of the electric field intensity on the surface of the dielectric layer, and the local sputtering caused by the discharge concentration are suppressed. In this case,
The plurality of metal wires for constituting the display discharge electrode 82b are arranged on one flat plate and a frame having a larger thermal expansion coefficient than that of the metal wire so as to be arranged in parallel with each other along one plane and at a predetermined interval. Is fixed to the top of the partition wall and fixed on one surface of the pair of parallel flat plates. Therefore, the mutual interval is maintained at the predetermined interval, and in the process of performing the heat treatment, the frame is formed based on the difference in the coefficient of thermal expansion between one of the pair of parallel flat plates and the metal wire and the frame. The metal body is expanded more than the pair of parallel flat plates, and the appropriate tension is applied to the metal wires, so that the plurality of metal wires are fixed to one surface of the pair of parallel flat plates in a state of being parallel to each other and each being straight. Therefore, one of a plurality of pairs of display discharge electrodes can be suitably arranged at a predetermined interval, and it becomes easy to arrange the display discharge electrodes forming a pair in parallel with each other.

[0012]

[Other aspects of the first and second aspects of the invention]
In the display discharge electrode disposing method of the discharge display device,
(d ′) the paste application step is to form the paste film at a position corresponding to between the partition and one of the opposing sides of the frame on one surface of the one parallel plate;
(f ′) In the heat treatment step, the plurality of metal wires are fixed directly or indirectly on one surface of the one parallel flat plate at both ends thereof. With this configuration, in the paste application step, a paste film is formed on one surface of one of the parallel flat plates at a position between the partition and the opposite side of the frame-shaped body, and the plurality of metal wires are formed in the heat treatment step. At the both ends, each is directly or indirectly fixed on one surface by an insulating film generated from the paste film and hardened in the cooling process. Therefore, since each of the plurality of metal wires is fixed at one end on one surface of one of the parallel flat plates at a position outside the partition, a paste containing an insulating material is used as in the case where the metal wire is fixed to the top of the partition. Need not be applied to the entire top portion of the partition walls or most of the partition walls, thereby simplifying the process. At this time, since the plurality of fixed metal wires are given tension based on the difference in thermal expansion coefficient as described above, even if they are not fixed to the top of the partition wall in the middle part in the longitudinal direction, they are perpendicular to the partition. No misalignment in any direction can occur, and the desired arrangement can be suitably obtained.

In the above aspect, more preferably,
The metal wire arranging step includes, when placing the plurality of metal wires on one surface of the one parallel flat plate, pressing the plurality of metal wires toward the one surface to partially apply the paste to the paste. It is pushed into the film. With this configuration, the plurality of metal wires fixed to the frame and each covered with the dielectric layer are disposed inside the opposing sides of the frame with the longitudinal direction along the second direction. A plurality of metal wires are placed at predetermined positions on one surface by placing the frame-like body on one flat surface from above while placing the frame-shaped body on one flat surface so as to contact the top of the partition wall at the position. Is done. Therefore, in the subsequent heat treatment process, each of the plurality of metal wires is directly fixed on one surface by the insulating film cured in the cooling process. Therefore, it is used for disposing a plurality of metal wires on one surface, compared to a case where the plurality of metal wires are fixed on one surface indirectly using a part of the frame-shaped body or the like. Even when the frame is removed, the plurality of metal wires are held at predetermined positions, so that it is easy to effectively use the space in the discharge display device.

[0014]

Another aspect of the second invention Preferably, in the method for arranging display discharge electrodes according to the second invention, the arranging step comprises the step of (g)
-1) In the process of forming the partition, a partition forming paste containing an insulating material for forming a part of the partition is applied to the top of the lower partition provided to form the lower part of the partition. A top paste application step of forming a paste film, and (g-2) the same fixing step and the metal wire coating step as the plurality of metal wires constituting one of the plurality of pairs of display discharge electrodes, and A plurality of metal wires fixed to a second frame similar to the frame and each covered with the dielectric layer are formed from above at a position inside the opposing side of the second frame. By pressing toward the top of the lower partition body and pressing a part of the lower partition body into the top paste film, and positioning the second frame-shaped body with respect to the one parallel flat plate, the plurality of lower frame bodies are formed. Place the metal wire in a predetermined position on one side Placing the lower metal wire to be placed, and (g
-3) The plurality of metal wires arranged on one surface of the one parallel flat plate are subjected to heat treatment at a predetermined temperature while being fixed to the second frame-shaped body, so that the partition walls are separated from the top paste film. And a baking step of fixing the plurality of metal wires to the top of the lower partition by a part of the partition which is hardened in the cooling process of the heat treatment. In this manner, in the top paste application step, the paste for forming the partition is applied to the top of the lower partition body for forming the lower part of the partition to form the top paste film. A plurality of metal wires fixed on the second frame and each covered with a dielectric layer, like the plurality of metal wires constituting one of the plurality of pairs of display discharge electrodes provided on the top of At a position inside the opposing side of the second frame-shaped member, the upper portion is pressed toward the top of the lower partition from above, and a part thereof is pressed into the top paste film.
By positioning the frame body with respect to one of the flat plates, the plurality of metal wires are arranged at predetermined positions on one surface thereof. Further, in the firing step, the metal wire is generated from the top paste film and cooled. The plurality of metal wires are fixed to the top of the lower partition by a part of the partition which is cured at a height position at a predetermined distance in the height direction of the partition from one of the plurality of pairs of display discharge electrodes. The second
And the other of the plurality of pairs of display discharge electrodes is individually covered with a dielectric layer. Therefore, since a plurality of pairs of display discharge electrodes provided in the discharge display device are each formed of a metal wire whose outer peripheral surface is individually covered with a dielectric layer, a film for providing an electrode on the other parallel flat plate is used. Since no forming process is required, the manufacturing process is simplified. In this case, the plurality of metal wires for constituting one and the other of the plurality of pairs of display discharge electrodes are frame-shaped or second frame-shaped so as to be arranged along one plane and parallel to each other at a predetermined interval. Since it is fixed on one surface so as to be located at the top of the partition wall or the top of the lower partition body, that is, at the intermediate portion in the height direction of the partition wall in a state where it is fixed to the body, a plurality of metals located on the one plane Since the interval between the lines is maintained at the predetermined interval and their relative positions can be easily controlled with reference to the frame, the display discharge electrodes forming a pair are arranged so as to be parallel to each other. Becomes easier.

[0015]

[Other aspects of the first and second inventions] Preferably, in each of the first and second aspects of the present invention, (c ') the metal wire coating step is performed after the fixing step. Prior to the step, the outer peripheral surfaces of the plurality of metal wires fixed to the frame or the second frame are individually covered with the dielectric layer. With this configuration, the dielectric layer that individually covers the outer peripheral surfaces of the plurality of metal wires is coated after the plurality of metal wires are fixed to the frame or the second frame in the fixing step. You. Therefore, the coating process in the metal wire coating step is performed collectively in a state where a plurality of metal wires are fixed to the frame or the second frame, so that the coating process is simplified. Moreover, in the fixing step, since the metal wire is fixed to the frame or the second frame without the dielectric layer provided on the outer peripheral surface, the order is reversed. It is also suppressed that the fixing method is limited by the dielectric layer provided on the outer peripheral surface as in the case. Therefore, for example, a simple and reliable fixing method such as welding can be used.

In the case where the metal wire coating step is performed after the fixing step as described above, preferably, (b ′) the fixing step is performed as the frame-shaped body or the second frame-shaped body. Each of the plurality of metal wires is welded to the metal frame using a metal frame, and the metal wire coating step includes (c-1) each of the plurality of metal wires. A dielectric powder electrodeposition step of electrodepositing a dielectric powder on an outer peripheral surface, and (c-2) a heat treatment at a predetermined temperature to melt the dielectric powder to form a dielectric powder on the outer peripheral surface of each of the plurality of metal wires. And a dielectric layer generating step of individually generating the dielectric layers. With this configuration, in the fixing step, after the plurality of metal wires are welded to the metal frame, respectively, in the dielectric powder electrodeposition step, a dielectric material is attached to the outer peripheral surface of each of the plurality of metal wires. The powder is electrodeposited, and further, in the dielectric layer forming step,
By performing heat treatment at a predetermined temperature, the dielectric powder is melted to form the dielectric layer. Therefore, since the fixing step is performed by welding, the metal wires can be more easily and reliably fixed to the frame or the second frame at a predetermined interval, and the mutual interval between the display discharge electrodes can be further increased. A plurality of metal wires welded to the metal frame can be electrodeposited by applying a current through the metal frame. As a result, it becomes easier to coat the metal wire through the subsequent dielectric layer forming step.

Preferably, in the case where the metal frame is used, the method of disposing the display discharge electrode includes the steps of:
(h) after the plurality of metal wires stretched between opposing sides of the frame-shaped body or the second frame-shaped body are fixed on one surface of the one parallel flat plate, the plurality of pairs of display discharges; The method includes a cutting step of cutting each of the plurality of metal wires corresponding to one of the electrodes at a position between the opposing side and the partition. With this configuration, after the plurality of metal wires are fixed on one surface of the one parallel flat plate, in the cutting step, each of the plurality of metal wires corresponding to one of the plurality of pairs of the display discharge electrodes is formed into a frame. It is cut at a position between the opposite side of the shape or the second frame and the partition. Therefore, since the plurality of metal wires corresponding to one of the plurality of pairs of display discharge electrodes are electrically independent from each other, they are suitably used as scan electrodes driven separately in the discharge display device. At this time, since the plurality of metal wires are in contact with the top of the partition wall and are fixed on one surface of one of the parallel flat plates in a state where a tension based on the difference in thermal expansion coefficient is applied,
The position of the metal wire corresponding to one of the plurality of pairs of display discharge electrodes separated from the frame or the second frame cannot be changed. Therefore, the mutual interval between the plurality of pairs of display discharge electrodes is maintained at a predetermined size.

Preferably, the cutting step comprises the step of (h ′)
After the heat treatment step, each of the plurality of metal wires is cut at a position between the opposing side of the frame or the second frame and the partition. With this configuration, the plurality of metal wires, that is, the entire number of the display discharge electrodes are cut and the connection state with the frame body or the second frame body is cancelled. The frame or the second frame can be removed. for that reason,
As described above, in addition to the plurality of metal wires corresponding to one of the plurality of pairs of display discharge electrodes being electrically independent, the frame or the second frame is not arranged in the discharge display device. Accordingly, the reduction of the effective dimension of the discharge space due to the occupation of a part of the discharge space, and the expansion of the size of the discharge display device are suppressed. In addition, since the shape and size of the frame or the second frame to be cut and removed is not restricted by the shape and size of the discharge display device, a plurality of metal wires fixed between the opposite sides are formed. The shape and size of the frame or the second frame can be appropriately determined so that deformation due to tension can be suppressed or handling can be facilitated, so that the intervals between the display discharge electrodes can be made more uniform. is there.

Preferably, (h ″) the cutting step comprises:
Each of the plurality of metal wires corresponding to one of the plurality of pairs of display discharge electrodes is cut at a position between the opposite side and the partition, and the frame or the second frame is cut. Cutting at a predetermined position to eliminate an electrical short circuit between the two ends of the plurality of metal wires corresponding to the other of the plurality of display discharge electrodes via the frame or the second frame. It is. With this configuration, the plurality of metal lines corresponding to one of the plurality of pairs of display discharge electrodes are electrically independent from each other, while the plurality of metal lines corresponding to the other of the plurality of pairs of display discharge electrodes are When the short-circuit state between both ends of the frame-shaped body or the second frame-shaped body is cut off, power can be commonly supplied. Therefore, one of the plurality of pairs of display discharge electrodes can be suitably used as a scan electrode to which a voltage is separately applied, and the other can be suitably used as a sustain electrode to which a voltage is applied collectively.

Preferably, the display discharge electrode is configured such that a portion of the outer peripheral surface contributing to discharge is formed of a convex surface which is smoothly continued in the circumferential direction. With this configuration, there is no corner forming a discontinuous surface on the surface of a portion contributing to discharge in a cross section perpendicular to the longitudinal direction of the display discharge electrode along the first direction. Discharge concentration is suppressed, and local sputtering is further suppressed. In addition, since light generated in a portion located behind the display discharge electrode when viewed from the light emitting side goes around the display discharge electrode and is emitted, light shielding by the display discharge electrode is suppressed, so that higher brightness is achieved. Is obtained. Further, since the light-shielding property is low, the display discharge electrode does not need to be composed of the transparent electrode and the metal electrode for supplementing the conductivity thereof, so that the manufacturing process of the discharge display device is simplified and the manufacturing cost is reduced. . Furthermore, since the light-shielding property is low, the light-shielding amount is not particularly increased, and the light-shielding amount is increased according to the size of the light-emitting section.
Since a plurality of pairs of display discharge electrodes can be arranged for one light-emitting section, an effective discharge area is enlarged and higher luminance is obtained. More preferably, the display discharge electrode has a circular cross section. With this configuration, since the cross-sectional shape is circular, discharge concentration and light blocking by the electrodes are further suppressed, and the manufacturing process is further simplified because the cross-sectional shape has no directionality.

Incidentally, a conventional AC-type PDP having a three-electrode structure is used.
In this case, as shown in FIG. 1, the display discharge electrodes 24 arranged in one direction along the inner surface of the front plate 10 and the surface discharge structure of a type in which the dielectric layer 20 covering the display discharge electrodes 24 is provided. Since the width of the display discharge electrode 24 is increased for the purpose of securing a sufficiently large discharge area, the use of the transparent electrode 28 suppresses the light shielding. However, even if the transmittance is high, forming a film on the front plate 10 inevitably causes a decrease in luminance due to an increase in thickness or the presence of an interface. In addition, the transparent electrode 2
8 is formed by an expensive thin film process, and it is necessary to further form a metal electrode as the bus electrode 30 in order to supplement conductivity. For this reason, the manufacturing process of the front plate 10 is complicated, and the manufacturing cost is increased. In addition, the bus electrode 30 is composed of a thin film such as Cr-Cu-Cr or Al or a thick film Ag as described above. In addition, it is difficult to control the process in order to ensure compatibility with the dielectric layer 20 and the like. In the case of a thick film, the withstand voltage of the dielectric layer 20 formed thereon is reduced because the film is porous. At the same time, there is a problem in that the color of the display surface is reduced due to the yellow color after baking, or the color is brown due to the reaction with tin adhering to the front plate 10 to cause poor appearance. In addition,
Since a glass substrate used for a PDP or the like is usually manufactured by a float method or the like in order to realize low cost, tin is diffused on a float surface (bottom surface). Further, as described above, the display discharge electrode 24 is provided with the bus electrode 30 having a high light-shielding property.
Therefore, providing a plurality of pairs in one light emitting section 36 directly lowers the luminance. Therefore, there is also a problem that the display discharge electrode 24 is provided in the central portion of the light emitting section 36 which is usually formed in a longitudinal shape, and the effective discharge region, that is, the light emitting region is limited to the central portion.

Preferably, the method for arranging the display discharge electrodes of the discharge display device includes the steps of: (i) after the fixing step, at a position between one of the opposing sides and the partition wall; An auxiliary support fixing step of fixing the longitudinal auxiliary support to the frame or the second frame at both ends thereof, and (j) fixing the auxiliary support to the frame or the second frame. A metal wire auxiliary fixing step of fixing the plurality of metal wires to the auxiliary support at one end in a state where the plurality of metal wires are electrically insulated from each other, and (k) one of the opposing sides and the auxiliary support. A metal wire cutting step of cutting each of the plurality of metal wires between the body and (d '') the paste application step, at the one end side after the heat treatment step is performed. At the position where the auxiliary support is fixed on one surface of the one parallel plate, By forming a strike layer, it is to them fixing the plurality of metal lines indirectly to its one face on. Thus, the fixing of the metal wire on one surface may be indirect.

In the case where the auxiliary support is used as described above, more preferably, (d ″ ′) the fixing paste application step includes at least the auxiliary support after the heat treatment step. By forming the paste film at a position where the frame-shaped body or the second frame-shaped body is fixed on one surface of the one parallel flat plate in the vicinity of a body,
While the auxiliary support is indirectly fixed on one side,
The plurality of metal wires are directly fixed on one surface at the other end opposite to the auxiliary support.
By doing so, in the cooling process of the heat treatment process,
Based on the difference in thermal expansion coefficient between the frame or the second frame and one of the parallel flat plates and the metal wire, the frame or the second frame is expanded more than the one flat plate. The plurality of metal wires are fixed on one surface of one of the flat plates indirectly at one end and directly at the other end in a state where the metal wires are appropriately tensioned.

Preferably, the discharge display device has a phosphor layer on an inner surface of the one parallel flat plate and a side surface of the partition wall in the hermetic space. In this way, a desired display color corresponding to the emission color of the phosphor layer provided in the hermetic space can be obtained. Since the phosphor layer is provided at a position separated in the height direction, the display discharge occurs at a position separated from the phosphor layer. Therefore, the deterioration of the phosphor layer due to the collision of the discharge gas and ions scattered at the time of the display discharge is suppressed, so that the decrease in luminance of the discharge display device over time is suppressed.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the following description, the dimensional ratios and the like of each part are not necessarily drawn accurately.

FIG. 2A is a partially cut-away view showing the configuration of an AC type color PDP (hereinafter simply referred to as PDP) 40 having a three-electrode structure according to one embodiment of the present invention.
(b) is a diagram showing a cross section along a longitudinal direction of a later-described write electrode 50 in (a). In the figure, PDP40
Is, for example, soda-lime glass [thermal expansion coefficient α = 90
× 10 ⁻⁷ (/ ° C.)] and a light-transmitting front plate 42, which is also made of soda lime glass, etc. Front plate 42 and back plate 44 in an airtight space formed between front plate 42 and back plate 44.
And a plurality of elongated partition walls 48 forming a plurality of discharge spaces 46 arranged at equal intervals along one direction in a plane parallel to.
A discharge gas such as Xe is sealed at a gas pressure of about 400 (Torr). In this embodiment, the front plate 42 and the back plate 44 correspond to one or the other of a pair of parallel flat plates.

The partition wall 48 is made of low softening point glass containing a filler such as alumina, and has a width of about 30 to 150 (μm) and a height h of about 100 to 300 (μm). It has dimensions and is arranged parallel to each other at equal intervals with a center interval of about 100 to 500 (μm). Accordingly, the size of the plurality of discharge spaces 46 formed between the front plate 42 and the rear plate 44 is about 70 to 350 (μm) in width and about 70 to 350 (μm) in the cross-sectional dimension perpendicular to the longitudinal direction of the partition wall 48. 100 to 300 (μm)
It is about.

On the back plate 44, an undercoat 51 is provided to cover the entire surface of the back plate 44. The undercoat 51 is provided between the undercoat 51 and one of display discharge electrodes 56a and 56b, which will be described later, which functions as a scanning electrode. A plurality of write electrodes 50 to be subjected to write discharge are provided along the plurality of partition walls 18 at positions between them so as to be covered with an overcoat 52. 52. The write electrode 50 has, for example, a width dimension of 50 to 50.
It is made of a highly conductive metal such as thick silver having a thickness of about 300 (μm), and is provided at a position passing through the center with a center interval of about 100 to 500 (μm) similar to the partition wall 48.

The undercoat 51 is made of, for example, low-alkali glass or non-alkali glass. Become. Each thickness is, for example, about 5 to 50 (μm). Since the write electrode 50 is made of thick film silver, it is easily diffused by heat treatment and easily adsorbs impurity gas. Therefore, the reaction between the write electrode 50 and the back plate 44 and the phosphor layer It is provided for the purpose of preventing contamination. Therefore, the write electrode 50 is made of a nickel (Ni) thick film, aluminum (Al), chromium-copper (Cr-Cu-Cr),
When it is composed of a thin film of gold (Au) or the like, the undercoat 51 and the overcoat 52 need not be provided.
The inorganic filler included in the overcoat 52 is as follows:
For example, it is a white filler made of titanium oxide or the like, and is added for the purpose of whitening the overcoat 52 so as to reflect the light emitted from the phosphor to the display side to increase the luminance. Therefore, even when the writing electrode 50 is made of a material having low reactivity, it is preferable to provide the overcoat 52 for the purpose of obtaining high luminance. In the present embodiment, the longitudinal direction of the write electrode 50 corresponds to the first direction.

On the surface of the overcoat 52 and the side surfaces of the partition walls 48, phosphor powders corresponding to luminescent colors such as R (red), G (green), B (blue) and the like emitted by ultraviolet excitation are provided. Are provided so that the adjacent discharge spaces 46 emit different colors. The thickness of the phosphor layer 54 is controlled for each color, but is in the range of, for example, about 10 to 50 (μm).

Further, between the front plate 42 and the back plate 44, a first direction which is a longitudinal direction of the partition wall 48 and the write electrode 50 in a plane parallel to the front plate 42 and the back plate 44. And a plurality of pairs of linear display discharge electrodes (sustain discharge electrodes) 56a and 56b arranged in parallel with each other along a second direction orthogonal to the direction of. The display discharge electrodes 56a and 56b are driven independently of each other to cause a sustain discharge (that is, generate and maintain a display discharge) therebetween, and are located on the top of the partition wall 48 to form the discharge space 46. At the upper end, it is substantially in contact with the inner surface of the front plate 42. Therefore, the arrangement height of the display discharge electrodes 56a and 56b is from the upper surface of the writing electrode 50 by a distance of about 90 to 250 (μm) determined from the surface of the phosphor layer 54 according to the thickness thereof. This is a position separated upward by a distance of about 105 to 350 (μm) determined according to the thickness of the overcoat 52. The center distance between the display discharge electrodes 56a and 56b of each pair is, for example, gd
= 100 to 500 (μm), and the center interval between each pair equal to the center interval between the plurality of display discharge electrodes 56a or between the plurality of display discharge electrodes 56b is a value sufficiently larger than gd. For example, pde = 300 to 1500 (μ
m). The display discharge electrodes 56a and 56b are
Although it is only abutted on the top of the partition wall 48 and is not fixed thereto, as will be described later in the description of the manufacturing method, the outside position of the partition wall 48 with an appropriate tension (tension) applied thereto. Is fixed on the overcoat 52 with a glass layer 68. Therefore, the movement of the partition wall 48 in the longitudinal direction is suppressed by the tension, and the mutual interval and the discharge distance are maintained at the appropriate values as described above.

Each of the display discharge electrodes 56a and 56b is, for example, tungsten (W) [thermal expansion coefficient α = 45 × 10
^-7 (/ ° C)], and the diameter De = 30
(μm) is a metal wire having a circular cross section of about (μm),
It has a much lower resistance value than a thick film electrode formed by a screen printing method or the like in which powder is fixed with glass. As shown in an enlarged manner in FIG.
a, 56b, that is, the surface of the metal wire 56 has a thickness t, for example.
Dielectric film 58 of about ₁ = 20 (μm) and thickness t ₂ = 0.1
(μm), and a dielectric film 58 individually covering the display discharge electrodes 56a and 56b.
Function as a dielectric layer for causing an AC discharge between them. That is, in this embodiment, a plurality of pairs of display discharge electrodes 56a and 56b are provided in the discharge space 46 in the form of a coated metal wire 61 having an overall diameter D of about 70 (μm).

The dielectric film 58 is made of, for example, B ₂ O ₃ —Zn
This is a glass film made of O--PbO or the like, which is thinner than the dielectric layer 20 formed with a thickness of, for example, about 30 to 40 (.mu.m) in the conventional surface discharge structure shown in FIG. . However, the display discharge electrodes 56a of the present embodiment,
56b is a structure in which the metal wire 56 is simply covered with glass, so that bubbles are generated at the interface with the electrode layer due to the sequential formation of a film on the substrate and metal particles such as those found in the thick-film conductor layer. Has a sufficient withstand voltage because the diffusion of GaN is suppressed. The composition of the glass material forming the dielectric film 58 is selected to have a coefficient of thermal expansion α = 47 × 10 ⁻⁷ (/ ° C.) substantially similar to that of the metal wire 56. The protective film 60 is a dielectric film made of, for example, MgO, which is resistant to sputtering and has a high secondary electron emission coefficient. The protective film 60 is provided for the purpose of preventing the dielectric film 58 from being deteriorated by sputtering and substantially functioning as a discharge electrode. Since the protective film 60 is thin as described above, the boundary with the dielectric film 58 is omitted in FIG. 2 and the like. Further, as is apparent from the relationship between the above dimensions, the distance between the display discharge electrodes 56a and 56b, that is, the discharge distance is about 30 to 430 (μm), and this distance is the center distance of each pair pde = 300 to It is set sufficiently smaller than about 1500 (μm).

In this embodiment, an airtight space (discharge space 4) formed between front plate 42 and back plate 44 is provided.
The light-emitting sections (cells) 70, which form the minimum unit of light-emission arranged in a matrix (vertical and horizontal) in 6), are written with a pair of display discharge electrodes 56a and 56b as shown by the dashed line in FIG. It is formed at each intersection with the input electrode 50. That is, the center interval of the light emitting sections 70 is equal to the center interval of these intersections. PDP4 consisting of three colors RGB
One pixel is composed of light-emitting sections 70 in one row in the direction along the write electrode 50 and three rows in the direction along the display discharge electrodes 56a and 56b. At the center intervals of the intersections, the display discharge electrodes 56
In the direction along a and 56b, they are arranged at the center interval three times the intersection. However, as is clear from FIG. 2 and the like, the discharge spaces 46 are separated from each other by the partition walls 48 only in the direction along the write electrodes 50. Therefore, each light-emitting section has a partition wall 4 in the direction along the display discharge electrodes 56a and 56b in which different light-emitting colors are arranged.
8 in the direction along the write electrode 50, each pair of the display discharge electrodes 56a, 5a
6b is substantially (electrically) separated by the vicinity of the central position, that is, the boundary of the range where the effect of the sustain discharge (and thus the ultraviolet light generated thereby) has an effect.

The PDP 40 configured as described above is driven, for example, as follows. That is, first, one of a plurality of pairs of display discharge electrodes 56a and 56b, which functions as a scan electrode (scan electrode), is sequentially scanned to apply a predetermined negative voltage, and at the same time, a predetermined negative voltage orthogonal to the scan is synchronized with the scan. By applying a predetermined positive voltage to the write electrode 50, a discharge (address discharge, that is, a write discharge) is sequentially caused between the write electrode 50 to which the positive voltage is applied and one that functions as a scan electrode. Electric charges are accumulated on the dielectric film 58 covering the scanning electrode (strictly, on the protective film 60 further covering the same), and the light emitting section 70 is selected. Thereafter, a predetermined discharge sustaining pulse is applied to all the display discharge electrodes 56a and 56b to generate a sustain discharge, and is maintained for a predetermined time.
One image is displayed by exciting the phosphor layer 54 in the selected light-emitting section 70 to emit light and emitting the light through the front plate 42. Then, the above-mentioned light emitting section 70
The desired image is displayed continuously by repeating the selection and light emission at a constant cycle. Note that a detailed driving method is not necessary for understanding the present embodiment, and thus the description is omitted.

In the above driving process, the display discharge electrode 5
6a and 56b have a small diameter of about D = 70 (μm) covered with the dielectric film 58 and the protective film 60, so that the area of the shaded portion in each light-emitting section 70 is 16
0 (μm), which is sufficiently smaller than the length of the light emitting section 70 in the direction along the writing electrode 50 [about 300 to 1500 (μm)], so that the light shielding by the display discharge electrodes 56a and 56b is reduced. And the substantial aperture ratio (that is, the ratio of the area that actually contributes to light emission in the light emitting section 64) is increased,
A sufficiently high luminance can be obtained. Moreover, the display discharge electrode 56
Since the cross-sectional shapes of the a and b are circular, most of the light generated in the shaded portion is substantially equal to the display discharge electrode 56b.
Since the light is emitted from the front plate 42 around the a and 56b, the substantial light shielding area is smaller than the above-mentioned shaded area, and a higher luminance than the luminance calculated from the area ratio is obtained. Will be done. Therefore, higher discharge efficiency can be obtained and the display discharge electrodes 56a,
6b is further suppressed.

Further, since the display discharge electrodes 56a and 56b are provided so as to be individually covered with the dielectric film 58,
The outer peripheral surface substantially functions as an opposing surface, and the display discharge is an opposing discharge between the electrodes facing each other as shown in a pair of display discharges 56a and 56b in FIG. Discharge concentration due to the difference in the distance between the electrode surfaces that contributes to the occurrence of discharge is unlikely to occur, and the temporal change in the discharge characteristics due to sputtering is suppressed. As is apparent from FIG. 2, a height of about 70 (μm) corresponding to the size of the total diameter D of the display discharge electrodes 56a and 56b is provided between the top of the partition wall 48 and the inner surface of the front plate 42. Gap is formed. However, even if a gap having such a size is generated, the charge hardly moves between the adjacent discharge space 46 partitioned by the partition wall 48, and thus the PD
There is no problem in the function of P40.

The PDP 40 is manufactured, for example, according to a manufacturing process shown in FIG. 4 and a sectional view of the back plate 44 in the middle of the manufacturing process shown in FIGS. 5 (a) to 5 (e). In each of the following steps, each paste is applied using, for example, a thick film screen printing method. First, in the undercoating step S1, a thick film insulating paste made of low alkali glass is applied to the entire surface of the back plate 44, dried, and baked at a predetermined temperature.
The undercoat 51 is formed. The thick film paste is repeatedly applied and laminated until a desired application thickness is obtained. The same applies to each of the following steps. Then, in a write electrode forming step S2, a thick film conductive paste such as an Ag paste is applied on the under coat 51 in a predetermined pattern, dried and fired at a predetermined temperature to form the write electrode 50. I do. And over
In the coating step S3, a thick film insulating paste containing a low softening point glass (low melting glass frit) and a filler such as alumina is applied to the entire surface of the undercoat 51 so as to cover the write electrode 50; After drying, the overcoat 52 is formed by firing at a predetermined temperature.

In the subsequent partition wall forming step S4, for example, a paste similar to a thick film insulating paste for forming the overcoat 52 is applied along the longitudinal direction of the plurality of write electrodes 50 and between the write electrodes 50. The barrier ribs 48 having a height of about 100 to 300 (μm) are repeatedly printed, dried, laminated and fired at a predetermined temperature.
To form FIG. 5A shows this state. In the phosphor layer forming step S5, the phosphor layer 5 is placed in a vehicle in which a resin component is dissolved in an organic solvent.
A phosphor paste in which a predetermined phosphor constituting the phosphor 4 is dispersed is applied on the side surface of the partition wall 48 and on the back plate 44 (strictly, on the overcoat 52 and the write electrode 50),
After the drying, the phosphor layer 5 is fired at a predetermined temperature.
4 is formed. Immediately after the application of the phosphor paste, the upper end is located at the height indicated by the broken line in FIG. 5B, and the space between the partitions 48 arranged on the overcoat 52 is thereby completely filled. However, when the organic solvent is volatilized and removed by the drying treatment after the application, the paste is shrunk to the position shown by the solid line, so that the phosphor layer 54 is over-exposed as shown in FIG. It is fixed to the upper surface of the coat 52 and the side surface of the partition wall 48 with an appropriate thickness.

In the fixing paste application step S6,
A thick film insulating paste containing crystallized glass as a glass powder is repeatedly applied along the longitudinal direction of the partition walls 48 at outer positions on both sides of the arranged partition walls 48 to 30 to 6
A paste layer 62 having a thickness of about 0 (μm) is formed. The normal coating thickness of the thick film screen printing is about 20 (μm), but the paste layer 62 can be formed thicker by, for example, increasing the amount of paste discharged from the screen or repeating printing. FIG. 5B shows this state. In this embodiment, the crystallized glass corresponds to an insulating material, the paste layer 62 corresponds to a paste film, and the fixing paste applying step S6 corresponds to a paste applying step. Then, in the metal wire disposing step S7, as described later, the plurality of coated metal wires 61 shown in FIG. The paste layer 62 is placed on the back plate 44 in a direction substantially perpendicular to the direction before drying (that is, in a sufficiently wet state) where the paste layer 62 can be easily plastically deformed. Thereby, in the vicinity of the inner periphery of the frame 63, the coated metal wire 61, that is, the display discharge electrodes 56a,
6b (both ends as described later in this embodiment)
It is pushed into the paste layer 62 and is held by its dry strength. FIG. 5D shows this state. As is apparent from FIG. 5D, the paste layer 62 is located on the inner peripheral side of the frame 63, that is, between the frame 63 and the partition wall 48 and in the vicinity of the frame 63. It is provided in.

The coating of the coated metal wire 61 is performed, for example, according to the process shown in FIG. That is,
First, in the metal wire welding step S71, as shown in FIG. 7, for example, a 426 alloy having a thickness of about 0.2 (mm) [thermal expansion coefficient α = about 95 × 10 ⁻⁷ (/ ° C.)] or nickel [thermal expansion] Coefficient α = approximately 140 × 10 ⁻⁷ (/ ° C.)]. The metal wires 56 are fixed by spot welding or the like at positions on both ends thereof so as to be parallel to each other. At this time, the metal wires 56 are arranged such that a relatively small center distance of about gd = 100 to 500 (μm) and a relatively large center distance of about pde = 300 to 1500 (μm) are alternately provided. In addition, when the metal wire is placed on the back plate 44 in the metal wire arranging step S7, a tension sufficient to maintain sufficient linearity is applied. That is, the plurality of metal wires 56 are fixed to the frame 63 in the same arrangement state as the plurality of pairs of the display discharge electrodes 56a and 56b in the PDP 40. Further, as is apparent from the values of the thermal expansion coefficient of the above-mentioned frame material and the above-mentioned values of the thermal expansion coefficients of the back plate material and the metal wire material,
3 has a larger thermal expansion coefficient than the back plate 44 and the metal wire 56. For this reason, the plurality of metal wires 56 are arranged at one end of each of the back plate 44 and the metal wires 56 so as to be arranged along one plane and in parallel with each other at a predetermined interval.
In the present embodiment, the metal wire welding step S71 corresponds to a fixing step because the frame 63 is fixed to the opposite sides 63a, 63a having a larger thermal expansion coefficient.

Next, in the surface treatment step S72, the surface of the metal wire 56 integrated with the frame 63 is cleaned with a solvent such as acetone or alcohol to remove dirt such as oil components on the surface. Clean. In the subsequent glass powder fixing step S73, for example,
A glass powder having an average particle size of about 3 (μm) made of B ₂ O ₃ —ZnO—PbO or the like is fixed by an electrodeposition method or the like. In this embodiment, this glass powder corresponds to the dielectric powder. B ₂ above
The glass powder made of O ₃ —ZnO—PbO or the like can be obtained, for example, by adding isopropyl alcohol (IPA) or the like to the raw material glass (glass frit) in the glass pulverizing step S731 so as to have a weight ratio of about 20 to 40 (wt%). Dispersion medium 60 to 80 (wt
%), And pulverized using a cobblestone or the like. In the glass powder fixing step S73, the glass powder is pulverized until the average particle diameter becomes the above-mentioned average particle diameter.
(vol%), about 75 to 85 (vol%) of IPA, and 1 to 5 (vol%) of an aqueous electrolyte solution. As the electrolyte material, for example, aluminum nitrate, calcium nitrate and the like are preferably used. That is, for example, in this electrodeposition liquid, a metal wire integrated frame 78 in which a plurality of metal wires 56 are welded to the frame 63 and an opposing electrode made of, for example, a 426 alloy are separated by a predetermined distance. Immerse and direct current between them.
At this time, since the frame 63 is made of a conductive 426 alloy, a current is collectively applied to the metal wires 56 via the frame 63. Thereby, the glass powder is fixed to the surface of the metal wire 56 by the principle of the electrophoresis method. Since the glass powder is generally positively charged in the electrodeposition liquid, the electrodeposition is suitably performed by using the metal wire integrated frame 78 as a negative electrode. The voltage and current of the DC current to be applied, the processing time, and the like are appropriately set according to the desired electrodeposition thickness.

In the baking step S74, the dielectric film 58 having a thickness of about 15 (μm) is subjected to a heat treatment at a predetermined working temperature of, for example, about 600 (° C.) which is determined for each type of glass powder. Is formed. Thereafter, in a protective film forming step S75, a protective film 60 made of MgO is formed on the dielectric film 58 by a sputtering method or the like, so that the coated metal wire 61 shown in FIG.
Is obtained in a state of being integrated with the frame 63 as shown in FIG. At this time, since the printing step S74 is performed independently of the processing of the front plate 42 and the rear plate 44, it is caused by the printing process (that is, the display discharge electrodes 56a, 5d).
No deformation or distortion occurs with the formation of the dielectric film 58 covering the 6b. In this embodiment, the glass powder fixing step S73 corresponds to a dielectric powder electrodeposition step, and the baking step S74 corresponds to a dielectric layer forming step.

The metal wire arranging step S7 is performed while the coated metal wire 61 provided with the dielectric coating 58 after being welded to the frame 63 as described above is fixed to the frame 63. FIG. 8 is a plan view showing the overall positional relationship of the state in which the metal wire integrated frame 78 is mounted on the back plate 44 (the back plate 44 of the partition wall 48 and the coated metal wire 61).
Are omitted in the illustration).
5 (d) corresponds to the section taken along line VV in FIG. As is clear from the figure, the frame 63 has a plane shape having a size similar to or slightly smaller than that of the rear plate 44, and the partition wall 48 is provided on the rear plate 44. On the overcoat 52, the length is provided within the range of entering the inside of the frame 63. That is, the metal wire integrated frame 78
Is placed on the overcoat 52 so that the frame 63 is located outside the partition wall 48 formed and arranged on the back plate 44, to be exact, on the overcoat 52.

At this time, the relative positions of the frame 63 and the rear plate 44 in the plane direction are determined by, for example, the following rear plate arranging step S501, frame temporary fixing step S502, suction plate positioning step S503, and By controlling in the frame contact step S504, the perpendicularity between the plurality of coated metal wires 61 and the partition wall 48 is ensured.
Hereinafter, the control method will be described with reference to FIGS. 5 (c) and 5 (d). First, in the back plate arranging step S501, the back plate 44 is mounted on the mounting table 74 of the coated metal wire arranging device, and is brought into contact with a plurality of positioning pins 72 provided on the upper surface 76 of the back metal plate. 44 at a predetermined position (FIG. 8)
reference). On the other hand, in the frame temporary fixing step S502,
The metal wire integrated frame 78 is positioned and fixed to a frame suction plate 120 having a sufficiently high rigidity made of a transparent plate made of, for example, an acrylic resin as shown in FIG. A plurality of suction holes 122 are provided through the frame suction plate 120 in the thickness direction, and frame positioning pins 124 are provided at a plurality of locations on the lower surface side.
After the relative position with respect to the frame suction plate 120 is determined by pressing the frame 63, the frame 63 is vacuum-sucked to a predetermined position of the frame suction plate 120 by sucking through the suction holes 122. At this time, the metal wire integrated frame 78 is oriented such that the coated metal wire 61 is located below the frame 63 in the drawing such that the surface to which the coated metal wire 61 is welded faces the back plate 44 side. I have.

Next, in the suction plate positioning step S503, the positioning between the mounting table 74 and the frame suction plate 120 is performed by inserting the frame suction plate 120 into the guide rod 126 erected on the mounting table 74. . FIG. 5C shows a state after the frame 63 is sucked in this way and the frame 120 is inserted into the guide bar 126. The frame temporary fixing step S502 is performed in a state where the frame 120 is not inserted into the guide bar 126. The frame suction plate 120 is provided with a guide hole (not shown) corresponding to the guide bar 126, and can be moved up and down in a direction perpendicular to the upper surface 76 of the mounting table 74 after alignment. As a result, the frame 63 is arranged at a position separated from the mounting table 74 upward in the drawing in a direction in which the longitudinal direction of the plurality of coated metal wires 61 integrated with the frame 63 is perpendicular to the longitudinal direction of the partition wall 48. Is done.

Further, in the frame contact step S504, the frame suction plate 120 whose relative position in the surface direction of the upper surface 76 of the mounting table 74 is determined by the guide holes and the guide rods 126 is attached to the back plate 44 in the direction of the arrow in the figure. By lowering the metal wire 61 to the contact position and bringing the metal wire 61 into close contact with the rear plate 44, the coated metal wire 61 is pressed from above toward the upper surface thereof. In FIG. 5D, the frame suction plate 120 at the moment of the close contact is indicated by a solid line, and the metal wire integrated frame 78 is indicated by a broken line. On the back side of the mounting table 74, an attraction magnet 128 made of an electromagnet or the like is provided.
The frame 63 brought into close contact with 4 is fixed at the contact position by the attraction magnet 128 without being displaced in the surface direction of the back plate 44. 42 that constitutes the frame 63
Since the 6 alloy, nickel, and the like have magnetism, they can be fixed by a magnet in this way. As a result, the coated metal wire 61 fixed to the lower surface of the frame 63 by being pressed toward the back plate 44 via the frame 63 is attached to the top of the partition wall 48 in the longitudinal direction as described above. In a state of being brought into abutment with a substantially vertical positional relationship, the opposite ends 63a of the frame 63 are opposed to each other.
Is pressed into the paste layer 62 provided on the overcoat 52 in the vicinity of and is fixed on the overcoat 52 with its dry strength. That is, in the present embodiment, by accurately positioning the relative positions of the frame suction plate 120 and the mounting table 74, the frame 63 and the back plate 44 positioned respectively on them are indirectly positioned. A plurality of covered metal wires 61 are arranged at predetermined positions.

Thereafter, by stopping the suction from the suction holes 122, the frame suction plate 120 is removed from the coated metal wire disposing device while the frame 63 is fixed only by the suction magnets 128. After the paste 61 is securely held by the drying strength of the paste layer 62, the suction is released by the suction magnet 128. In the drawing, the frame 63 having a thickness of about 0.2 (mm) in this mounted state is drawn thinner than the height of the partition wall 48 of h = 100 to 300 (μm). Varies depending on the actual dimensions. As described above, in the present embodiment, since the plurality of covered metal wires 61 are placed on the partition wall 48 in the form of the metal wire integrated frame 78, they are arranged at predetermined center intervals gd and pde. They will be arranged parallel to each other.

Returning to FIG. 4, in the heat treatment step S8, as shown in FIG. 8, the coated metal wire 61 fixed to the frame 63 is placed on the top of the partition wall 48,
For example, heat treatment is performed at a predetermined temperature of about 600 (° C.) or less. As a result, the paste layer 62 is heated and melted and cured in the cooling process to form a glass layer 68, and the glass layer 68 causes each of the plurality of coated metal wires 61 to be placed on the overcoat 52. Both ends are fixed. At this time, the coated metal wire 61, which is welded to the frame 63 having a larger thermal expansion coefficient than the metal wire 56, is integrated until the glass layer 68 is solidified in the cooling process, for example, to a temperature of about 300 (° C.). While maintaining the same thermal expansion as that of the frame 63, it is shrunk together with the back plate 44 after reaching its solidification temperature where it is fixed to the overcoat 52 with the hardened glass layer 68. .

Incidentally, in the present embodiment, the amount of thermal expansion at the solidification temperature obtained from the above-mentioned coefficient of thermal expansion is:
For the length at room temperature, for example, the frame 63 has 0.
About 285 (%) (when made of 426 alloy) or 0.42
(%) (When made of nickel), coated metal wire 61
Is about 0.135 (%) and the back plate 44 is about 0.27 (%) [For convenience, the difference between the room temperature and the solidification temperature is 300 (° C.). ]. Therefore, the amount of elongation with respect to the length at room temperature when the coated metal wire 61 is fixed by the glass layer 68 is about 0.285 (%), which is the same as that of the frame 63, including the elastic elongation based on the difference in the coefficient of thermal expansion from the frame 63. Or 0.4
On the other hand, the amount of shrinkage from fixation to cooling to room temperature is about 0.27 (%), which is equal to the amount of thermal expansion of the back plate 44 at the time of fixation. The difference is 0.015 (%) which is the difference between
Or about 0.15% of elongation remains. The amount of elongation does not include that due to thermal expansion, and all are elastic elongations. Therefore, since the coated metal wire 61, that is, the display discharge electrodes 56a and 56b is provided with tension based on its elastic elongation in a state where the display discharge electrodes 56a and 56b are disposed on the partition wall 48, as described above, the display discharge electrodes 56a and 56b are provided. Although this is not fixed to the partition wall 48, it is suppressed from moving from a predetermined arrangement position by this tension.

Further, since the thermal expansion coefficient of the coated metal wire 61 is smaller than that of the frame 63, even at the above-mentioned solidification temperature, the coated metal wire 61 is given a tension based on the difference in the amount of thermal expansion between them. I have. Therefore, even when the paste layer 62 is sufficiently softened and easily flows at the time of the above-described heat treatment, the plurality of coated metal wires 61
Are fixed to the frame 63 by welding, and tension is applied to them, so that no displacement from the initial disposition position can occur. For this reason, the distance between the display discharge electrodes 56a and 56b which are discharged in pairs and the distance between the adjacent display discharge electrodes 56a and 56b are
The coated metal wire 61 abutted on the top of the partition wall 48 is fixed to the overcoat 52 while maintaining the desired size when all are welded to the frame 63.

When the heat treatment is performed as described above, the moving direction of one of the opposite sides 63a caused by the expansion of the frame 63 is fixed to a direction along the longitudinal direction of the coated metal wire 61, and It is necessary to maintain the perpendicularity between the metal wire 61 and the partition 48. Therefore, for example, a heat treatment is performed using a holding jig (fixing jig) such as a heat-resistant clip or weight (not shown) in a state where the other opposing side 63 a is fixed on the back plate 44. In addition, in the one opposite side 63 a where the movement of the coated metal wire 61 in the longitudinal direction is planned, the adhesion between the frame 63 and the back plate 44 is secured, and the coated metal wire 61 is securely fixed by the glass layer 68. You need to do that. Therefore, it is desirable to put a weight or the like that does not hinder the thermal expansion of one of the opposing sides 63 a so as not to float from the back plate 44.

In the cutting step S9 after the coated metal wire 61 is fixed, the coated metal wire 61 is cut at both ends shown by dashed lines C1 and C2 in FIG. 8, for example. In this manner, the frame 63 is removed from the back plate 44 by separating the coated metal wire 61 and the frame 63 from each other. FIG. 5E shows this state.
Note that the plurality of coated metal wires 61 are connected to the partition walls 4 as described above.
8 is fixed to the overcoat 52 in a state where it is brought into contact with the top and tension is applied, so that movement from the disposition position is sufficiently suppressed. Therefore, since the position of the partition 48 is hard to change on the top, even when separated from the frame 63, their mutual interval is maintained at a predetermined size. In the front plate joining step S10, the separately prepared front plate 42 is placed on the rear plate 44 treated as described above from the upper side of the partition wall 48, and is placed at a predetermined temperature of about 450 to 500 (° C.). By performing the heat treatment, the peripheral portions (not shown) are bonded to each other by frit glass or the like so that the inside is airtight. Thereafter, in the discharge gas filling step S11, for example, after the inside of the discharge space 46 is evacuated to a vacuum state,
For example, the PDP 40 can be obtained by filling a discharge gas such as He, Ne, and Xe at a predetermined pressure of about 400 (Torr). Therefore, as is clear from the above process description,
Without forming any film on the front plate 42, the PDP 40
Can be manufactured.

Here, in this embodiment, when the display discharge electrodes 56a and 56b of the PDP 40 having the three-electrode structure are arranged, in the partition wall forming step S4, one surface of the back plate 44 is strictly overcoated. While the partition wall 48 is formed on the 52 at a uniform height, in the metal wire welding step S71, a plurality of metal wires 56 for forming a plurality of pairs of the display discharge electrodes 56a and 56b extend along one plane. Both ends are fixed to the opposing sides 63a, 63a of the frame 63 so as to be arranged in parallel with each other with the center intervals gd, pde. The outer peripheral surface is individually coated with a dielectric film 58, and a paste layer 62 is formed on the overcoat 52 in a fixing paste application step S6. In the metal wire arranging step S7, the plurality of metal wires 56 fixed to the frame 63 and each covered with the dielectric film 58 are formed so that the longitudinal direction is orthogonal to the longitudinal direction of the write electrode 50 and the partition wall 48. Orientation
The frame 63 is placed on the overcoat 52 from above so as to be in contact with the top of the partition wall 48 at a position inside the opposing sides 63a, 63a, and both ends are substantially pressed into the paste layer 62. , Its frame 63
Is positioned with respect to the back plate 44, so that the coated metal wire 61 is arranged at a predetermined position on the overcoat 52, and further, in the heat treatment step S8, a plurality of wires arranged on the overcoat 52 are formed. By performing a heat treatment at a predetermined temperature of about 600 (° C.) or less while the coated metal wire 61 is fixed to the frame 63, a glass layer 68 is generated from the paste layer 62, and the glass layer hardened in the cooling process. 68 secures each of the plurality of coated metal wires 61 on its overcoat 52. for that reason,
A plurality of pairs of display discharge electrodes 56a and 56b constituted by the plurality of metal wires 56 are in contact with the tops of the partition walls 48 having a uniform height with the outer peripheral surfaces individually covered with the dielectric film 58. As described above, the display discharge electrodes 56a and 56b, which are adjacent to each other and are paired with each other, have opposing surfaces along the direction perpendicular to the longitudinal direction of the partition wall 48 and at predetermined intervals gd and pde. Be provided. Therefore, as shown in FIG. 2 (b), display discharge occurs exclusively between the opposing surfaces, so that the distance between the electrode surfaces contributing to the discharge becomes substantially uniform, so that local sputtering is suppressed. You. In this case, the plurality of metal wires 56 are fixed to the back plate 44 and the frame 63 having a larger coefficient of thermal expansion than the metal wires 56 so as to be arranged parallel to one another along a plane and at a predetermined interval. In this state, it is brought into contact with the top of the partition wall 48 and is fixed on the overcoat 52. Therefore, the mutual interval is maintained at the predetermined interval, and the frame 63 expands more than the rear plate 44 based on the difference in the coefficient of thermal expansion between the rear plate 44 and the metal wire 56 during the heat treatment. Since the plurality of metal wires 56 are fixed to the overcoat 52 in a state of being parallel to each other and each being straight, by applying an appropriate tension to the metal wires 56, a plurality of pairs of display discharge electrodes are provided. 56a and 56b can be suitably arranged at predetermined intervals.

Incidentally, when the outer peripheral surface of the coated metal wire 61 is covered with the dielectric coating 58 in the form of the coated metal wire 61, the metal wire 56 cannot be welded to the frame 63 as described above. Therefore, when arranging the coated metal wires 61 that have been coated without being fixed to the frame 63 on the top of the partition wall 48 at predetermined intervals, for example, the coating metal wires 6
1 are placed on the partition wall 48 at a predetermined arrangement interval, and the positional displacement of the back plate 44 in the surface direction is appropriately controlled at a position corresponding to the opposite side 63a of the frame 63 outside the partition wall 48 or the like. The heat treatment step S8 is performed in a state where the heat treatment is performed using a jig. At this time, immediately after the metal wire arranging step S7, the covered metal wire 61
The paste layer 62 formed on the coat 52 is maintained at the dry strength, and the paste layer 62 is softened and fluidized during the heat treatment. Therefore, the paste layer 62
In the heat treatment for generating the glass layer 68 from the metal, the coated metal wire 61 is not affected by its own weight or internal strain even if the displacement is suppressed by the holding jig.
8 can move on. Moreover, since the tungsten constituting the metal wire 56 has a smaller coefficient of thermal expansion α than the soda-lime glass constituting the back plate 44, the glass layer 68
Is solidified, the amount of shrinkage in the cooling process after both ends of the coated metal wire 61 are fixed on the overcoat 52 is smaller than that of the back plate 44, so that the heat treatment step S
At room temperature after 8, no tension acts on the coated metal wire 61, and the coated metal wire 61 is in a slack state. Therefore, the movement of the coated metal wire 61 in the plane direction of the back plate 44 cannot be suppressed merely by fixing at both ends, and for example, it is necessary to fix the top of all the partition walls 48 with the glass layer 68 or the like. The process becomes complicated. That is, in the disposing method without using the frame 63, it is extremely difficult to fix the coated metal wires 61 while maintaining them at the predetermined arrangement interval, and even if the fixing can be performed, the subsequent movement is suppressed. Is also difficult.

Further, in this embodiment, a plurality of coated metal wires 61 arranged on one plane are fixed on the overcoat 52 so as to abut on the partition wall 48 having a uniform height. A plurality of pairs of display discharge electrodes 56a, 56
b, a plurality of pairs of display discharge electrodes 56 are provided.
A part of the outer peripheral surfaces a and 56b extending in a thickness direction of the PDP 40, that is, a direction substantially perpendicular to the surface direction of the front plate 42 functions as an opposing surface that substantially contributes to the opposing discharge. That is, the facing surfaces of the display discharge electrodes 56a and 56b are provided in a plane substantially perpendicular to the surface direction of the front plate 42.
Therefore, even if the area of the facing surface, that is, the electrode area, is sufficiently large in order to make the discharge region sufficiently large, the size of the electrode does not depend on the discharge distance or the mutual distance between the display discharge electrode 56 provided in the adjacent light emitting section 70. Because it does not affect the interval,
It is possible to reduce the size (or center interval) pde of the light-emitting section 70 determined by the electrode spacing while securing a sufficiently large discharge region. Therefore, the size of the light emitting section 70 is further reduced, and the PDP 40
It is easy to increase the definition.

Incidentally, a conventional PD as shown in FIG.
In P <b> 8, the electrode surface contributing to the discharge is provided to extend in the surface direction of the front plate 10. Therefore, making the width of the display discharge electrode 24 relatively large in order to secure a sufficiently large discharge area means enlarging the size of the display discharge electrode 24 in the plane direction. Therefore, the other display discharge electrodes 24 provided in the light emitting section 36 adjacent to the interval gd between the pair of display discharge electrodes 24a and 24b so that the display discharge is reliably generated and the erroneous discharge is suppressed. Is required to be set to be sufficiently large, and the width dimension of the display discharge electrode 24 needs to be relatively large. Therefore, it was difficult to increase the definition of PDP8.

In the present embodiment, the fixing paste application step S6 is performed by using the over paste provided on the back plate 44.
Opposite side 63 a of partition 48 on coat 52 and frame 63
And a paste layer 62 is formed along the partition wall 48 at a position corresponding to each of the heat treatment steps S
Reference numeral 8 designates a plurality of coated metal wires 61 fixed on one surface at both ends thereof by a glass layer 68 which is hardened in a cooling process. Therefore, since each of the plurality of coated metal wires 61 is fixed at one end thereof on one surface of the overcoat 52 at a position outside the partition 48, as in the case of fixing to the top of the partition 48,
There is no need to apply the thick film insulating paste to the entire top portion or most of the partition wall 48, and the process is simplified. At this time, a tension based on the difference in thermal expansion coefficient is applied to the plurality of fixed coated metal wires 61 as described above.
Even if it is not fixed to the top of the partition wall 48 in the middle part in the longitudinal direction, no displacement in the direction perpendicular thereto can occur, and the desired arrangement state can be suitably obtained.

Further, in this embodiment, the dielectric coating 58 individually covering the outer peripheral surfaces of the plurality of metal wires 56 has the plurality of metal wires 56 fixed to the frame 63 in the metal wire welding step S71. Later, a glass powder fixing step S7
3 and baking step S74. Therefore, the coating process is performed on the plurality of metal wires 56 collectively while being fixed to the frame 63, so that the coating process is simplified. Moreover, in the metal wire welding step S71, the metal wire 56 is fixed to the frame 63 in a state where the dielectric film 58 is not provided on the outer peripheral surface thereof. Limiting the fixing method by the dielectric film 58 provided on the surface is also suppressed.

In this embodiment, after the plurality of metal wires 56 are welded to the frame 63 made of 426 alloy, nickel or the like in the metal wire welding step S71,
In the glass powder fixing step S73, the glass powder is electrodeposited on the outer peripheral surface of each of the plurality of metal wires 56. Further, in the baking step S74, the glass powder is melted by heat treatment at a temperature of about 600 (° C.). This produces a dielectric coating 58. Therefore, since the metal wire 56 is fixed to the frame 63 by welding, the metal wire 56 can be fixed to the frame 63 easily and reliably at a predetermined interval, and the mutual interval between the display discharge electrodes 56a and 56b can be extended. Can be made more uniform, and a plurality of metal wires 56 welded to the frame 63 can be subjected to an electrodeposition process by energizing through the frame 63, so that the dielectric powder in the glass powder fixing step S73 can be formed. The electrodeposition process, and subsequently, the coating process of the metal wire 56 performed through the subsequent baking process S74, that is, the dielectric layer forming process, is further facilitated.

Further, in this embodiment, after the heat treatment step S8, each of the plurality of metal wires 56 is cut at a position between the opposing sides 63a, 63a of the frame 63 and the partition wall 48, so that A cutting step S9 for removing the frame 63 is performed. Therefore, a plurality of metal wires 5
6 are cut off from each other so that they are electrically insulated from each other.
Since the electrodes a and 56b and the electrodes used as the scanning electrodes are independent of each other, the original function of the electrodes can be suitably obtained. In addition, since the frame 63 is removed by cutting all the metal wires 56 and is not arranged in the PDP 40, the effective dimension thereof is reduced due to the fact that it occupies a part of the discharge space 46.
P40 dimensional expansion is suppressed.

In this embodiment, the display discharge electrodes 56a and 56b have a circular cross section perpendicular to the longitudinal direction. Therefore, since there is no corner that forms a discontinuous surface on the surface of a portion contributing to discharge in the cross section, discharge concentration at the corner is suppressed, and local sputtering is further suppressed. In addition, light generated in a portion located behind the display discharge electrodes 56a and 56b when viewed from the light emitting side emits the display discharge electrodes 56a and 56b.
Since the light is emitted around the front plate 42 around the 56b, light shielding by the display discharge electrodes 56a and 56b is suppressed, so that higher luminance can be obtained. Further, since the light-shielding property is low, the display discharge electrodes 56a and 56b do not need to be formed of a transparent electrode and a metal electrode for supplementing the conductivity, so that the manufacturing process of the PDP 40 is simplified, and the manufacturing cost is reduced. You. Further, since the cross-sectional shape has no directionality, the manufacturing process is further simplified.

In this embodiment, the phosphor layer 54 is provided on the back plate 44 and on the side wall of the partition wall 48. Therefore, color display can be suitably obtained, but the phosphor layer 5
Since 4 is provided at a position distant from the display discharge electrodes 56a and 56b, a display discharge occurs at a position distant from the phosphor layer 54. Therefore, the deterioration of the phosphor layer 54 due to the collision of the discharge gas ions scattered at the time of the display discharge is suppressed, and the decrease in the luminance of the PDP 40 with time is suppressed.

The display discharge electrodes 56a, 56b are made of metal wires, and the display discharge electrodes 56a, 56b
The dielectric coating step of the metal wire (the glass powder fixing step S73 and the baking step S74 in FIG. 6) for forming the dielectric coating 58 that covers the front plate 42 and the rear plate 44 is a separate step. , Display discharge electrodes 56 on them
a, 56b and the dielectric film 58 are not formed,
Since the size of the equipment for forming these is not affected by the dimensions of the front plate 42 and the back plate 44, the PDP 40
Even when the display area of the device becomes large, the scale-up of the manufacturing equipment is suppressed.

Incidentally, in the conventional AC-type PDP 8 having a three-electrode structure as shown in FIG. 1, in order to secure a sufficiently large discharge area and to suppress shading by the display discharge electrode 24, the transparent electrode 28 is formed. Therefore, many steps as shown in FIG. 9 were required as an electrode forming step. That is, first, the SiO ₂ layer forming step S10
In FIG. 1, an SiO ₂ film (not shown in FIG. 1) for increasing the film strength of the transparent electrode 28 and suppressing the elution of alkali components from the glass substrate is dipped, sputtered,
A transparent conductive film such as ITO or ATO is provided on the SiO ₂ film by a thin film process such as CVD or vapor deposition in a transparent conductive film forming step S102. The transparent electrode 28 is formed by patterning using a photo process. Since the transparent electrode 28 has a low conductivity, the bus electrode 30 is necessary.
A display discharge electrode 24 is obtained by forming a metal film such as Cr-Cu-Cr by a thin film process and patterning it in the patterning step S105 in the same manner as the transparent electrode 28.
After that, in the dielectric layer forming step S106, the dielectric layer 2
0 is formed. Therefore, an expensive thin film process is used and the manufacturing process is complicated, so that the manufacturing cost is increased.

Further, in this embodiment, since it is not necessary to form a film on the front plate 42 as described above, a color filter for suppressing reflection of external light and obtaining high contrast is provided on the inner surface thereof. It is easy to provide. By the way, when a color filter is provided, the front plate 42 for emitting light in order to minimize the influence of the viewing angle.
Must be provided on the inner surface of the For this reason, in a conventional PDP having a film formed on the inner surface of the front plate 10, as shown in FIG.
To provide a dielectric layer 66 on the color filter 64.
It is necessary to flatten the surface on which the display discharge electrodes 24 and the like are formed, and to form a color filter 64 along the writing electrodes 18 when joining the front plate 10 and the back plate 12 to form an airtight space. Therefore, there is a problem that the process is complicated and it is difficult to control the dimensions and the pitch.

Next, another embodiment of the present invention will be described. In the following embodiments, description of parts common to the above-described embodiments will be omitted.

FIG. 11 is a view corresponding to FIG. 2 showing the configuration of a PDP 80 to which another embodiment of the method of disposing display discharge electrodes according to the present invention is applied. In the drawing, on two planes parallel to the plane direction of the back plate 44, in a second direction substantially orthogonal to a first direction which is a longitudinal direction of the partition wall 48 provided at a height of, for example, about 270 (μm). A plurality of pairs of display discharge electrodes 82a and 82b are provided along the respective lines. Each of the display discharge electrodes 82a and 82b is composed of the coated metal wire 61, and is arranged at a uniform center interval of, for example, about pde = 750 (μm), and each pair is subjected to sustain discharge. Are vertically arranged in the height direction of the partition wall 48. The display discharge electrode 82a located on the rear plate 44 side is at a height of, for example, about 100 (μm) from the upper surface of the overcoat 52, and the display discharge electrode 82b located on the front plate 42 side is, for example, the display discharge electrode 82a.
And a discharge distance between them is about 100 (μm), and they are provided at respective height positions substantially in contact with the inner surface of the front plate 42.

Also, in the PDP 80, the phosphor layer 54 is provided on the surface of the overcoat 52 and the side surface of the partition wall 48. The plurality of pairs of display discharge electrodes 82a, 82
2b, the upper display discharge electrode 82b is provided above the partition 48 (on the top), while the lower display discharge electrode 82a penetrates the partition 48 and the phosphor layer 54. It is provided at a position below the top. The PDP 80 has a configuration other than that described above, that is, the display discharge electrodes 82 a and 82 b of each pair
Except for being provided in a direction perpendicular to the plane direction of the PDP 40, the PDP 40 is configured substantially the same as the PDP 40 shown in FIG. 2, and is driven similarly by the above-described driving method. It is the display discharge electrode 82a located on the lower side that functions as a scanning electrode that is discharged between the writing electrode 50 during driving.

According to the PDP 80 thus configured, a plurality of pairs of display discharge electrodes 82 arranged in parallel with each other are provided.
a and 82b, a plurality of pairs of display discharge electrodes 82a and 82b which are displayed and discharged between each other have different height positions in the thickness direction from the front plate 42 to the back plate 44, while having a three-electrode structure in which a sustain discharge is performed between the two. Are arranged substantially opposite to each other. Therefore, the display discharge electrode 82a is located away from the vicinity of the inner surface of the front plate 42 on the light emission side,
Since only one display discharge electrode 82b is located near each inner surface of each light-emitting section 70 (see FIG. 2B), light shielding by the display discharge electrodes 82a and 82b is reduced.
The substantial aperture ratio of each light-emitting section 70 is improved, and high luminance can be obtained. Moreover, since the discharge direction between the display discharge electrodes 82a and 82b is perpendicular to the plane direction in which the plurality of light emitting sections 70 are arranged, the discharge distance and the center interval of the light emitting sections 70 can be set independently of each other. The PDP 40
Higher definition is easier than ever, and for example, a cell pitch of 200 to 300 (μm) required for HDTV can be adopted.

Further, according to the above structure, the display discharge electrode 82a functioning as the scanning electrode is located below the top of the partition wall 48 on which the phosphor layer 54 is provided on the side surface. The height of the partition 48, that is, the coating height of the phosphor layer 54, and the display discharge electrode 82
The arrangement height of a can be set independently. Therefore, the height of the partition wall 48 is increased while the discharge distance between the writing electrode 50 and the PDP 8 or the like is increased, so that the area of the phosphor layer 54 is increased to improve the luminance, or the area of the phosphor layer 54 is improved. Is maintained relatively large, the discharge distance between the write electrode 50 and the write electrode 50 can be reduced to increase the operation margin.

Hereinafter, an example of the method of manufacturing the above-described PDP 80 will be described with reference to FIG. 12 showing a process chart and FIGS. Note that FIG. 12 shows only a part that is performed in place of the partition wall forming step S4 between the overcoating step S3 and the phosphor layer forming step S5 in FIG. Is the same as shown in
The following description focuses on the differences.

In the overcoating step S3,
After the coat 52 is formed, the lower partition wall dry body forming step S4
In No. 1, by repeatedly printing, drying and laminating a thick film insulating paste (paste for forming a partition) in the same manner as in the partition formation step S4, the partition 48 is positioned below the display discharge electrode 82a. A dried lower partition wall 84a having a height of about 100 to 110 (μm) which constitutes a portion is formed. Next, in a first top paste application step S42, a similar thick film insulating paste is applied to the top of the lower partition wall dry body 84a, and a part of the partition walls 48 located above the lower partition wall dry body 84a is removed. 5 to configure
An intermediate paste layer 86 having a thickness of about 0 (μm) is formed. FIG. 13A shows this state. It should be noted that FIG.
In (e-2), only the overcoat 52 of the film formed on the back plate 44 is shown.
The part located on the side is omitted. In this embodiment, the first top paste application step S41 corresponds to the top paste application step, and the intermediate paste layer 86 corresponds to the top paste film. Therefore, in this embodiment, the top paste application step is performed in a state in which the above-described dried lower partition wall 84a formed on the lower partition wall constituting the lower portion of the partition wall 48 is not fired.

Then, in the lower metal line arranging step S43, as shown in FIG.
A plurality of coated metal wires 61 for constituting the display discharge electrodes 82a fixed at the same center interval of about (μm) are arranged in a direction in which the longitudinal direction thereof is orthogonal to the longitudinal direction of the lower partition dry body 84a, and Before the layer 86 is dried, it is placed thereon and pushed toward the top of the lower partition dry body 84a to perform a drying process. Thereby, the coated metal wire 61
The intermediate partition layer 86 is buried at a position substantially in contact with the top of the already dried lower partition wall 84a, is held at its dry strength, and the intermediate paste layer 86 is almost entirely covered with the dried intermediate partition wall dry body 84b. Fixed. FIG. 13 (b-1), (b-
2) shows a state where the coated metal wire 61 is placed, as shown in FIG.
, (C-2) shows the state after embedding or drying. In the lower metal wire arranging step S43, the relative positions and arrangement methods of the respective members are substantially the same as those in the metal wire arranging step S7. In the present embodiment, the frame 88 used in the lower metal line arranging step S43 corresponds to a second frame. The frame 88 has the same shape and the same material as the frame 63 described above. That is, also in the present embodiment, a plurality of coated metal wires 61 are connected to a frame 88 similar to the frame 63, that is,
4 and fixed to the top of the lower partition dry body 84a in a state of being welded to a frame 88 made of a material having a larger coefficient of thermal expansion than the constituent material of the metal wire 56, so that the distance between the coated metal wires 61 and the lower partition dry body are fixed. The perpendicularity to the longitudinal direction of 84a is secured with high accuracy.

After arranging the coated metal wire 61 corresponding to the display discharge electrode 82a as described above, in the second top paste application step S44, the same thick film insulating material as that used for forming the intermediate partition wall dry body 84b is used. The paste is repeatedly printed and dried thereon to form the dried upper partition wall 84c so that the height from the overcoat 52 is, for example, about 280 to 290 (μm). Fig. 13 (d-1), (d
-2) shows this state. In addition, the intermediate partition wall dried body 8
As shown in FIG. 13 (c-2), the upper surface of the upper surface 4b has irregularities due to the embedding of the covering metal wires 61. However, the intermediate paste layer 86 is formed sufficiently thick, Since the coated metal wire 61 is pushed in while the paste layer 86 has sufficient fluidity, the irregularities are small enough to not disturb the uniform application of the thick film insulating paste for forming the upper partition dry body 84c. It stays at that. Then, in the firing step S45, the back plate 44 on which the coating film is formed in this way is fired at a predetermined temperature lower than the processing temperature of the firing step S74, for example, about 580 (° C.), so that the lower partition wall dried body 84a, Dry intermediate wall 84
b, and the dried upper partition wall 84c were melted and integrated to firmly hold the coated metal wire 61, and the coated metal wire 61, that is, the display discharge electrode 82a was penetrated in the thickness direction at the middle part in the height direction. A partition 48 is created. FIGS. 13 (e-1) and 13 (e-2) show this state. Even when the display discharge electrode 82a is provided through the partition wall 48 in this manner, the coated metal wire 61 is stretched straight based on the difference in the thermal expansion coefficient from the frame 88, and is thereby cooled during the heat treatment. The back plate 44 is hardened by the partition wall 48 to be hardened.
The frame 88 and the rear plate 44 are fixed to the upper side (above the rear plate 44) and after the firing step S74 is completed.
Since the elastic elongation based on the difference in the thermal expansion coefficient from the above remains, it is preferably provided at a predetermined arrangement position while maintaining straightness. At this time, since the shrinkage of firing of the lower partition dry body 84a and the like is about 90 to 96 (%), the height of the partition 48 is about 270 (μm), and the lower end position of the display discharge electrode 82a is overcoat 52. It is about 100 (μm) from above. In the present embodiment, the intermediate partition dry body 84b, which is dried and generated from the intermediate paste layer 86 and has a function of directly fixing the display discharge electrode 82a, and the upper partition dry body 84c provided thereon are fired. At the same time, it is generated in a part of the partition wall 48. Further, in the present embodiment, the lower partition wall dry body forming step S41, the first top paste applying step S4
2. The second top paste application step S44 and the baking step S45 include a first top paste application step S
Steps 42 to S45 correspond to the disposing step, respectively. That is, the coated metal wire 61 constituting the display discharge electrode 82a is connected to the lower partition (the lower partition dry body 8 of the partition 48).
The baking process for fixing to the top of the portion formed from 4a) also serves as a baking process for forming the partition walls.

After the above-mentioned baking process, in the cutting step S46, the frame 88 is separated by cutting the coated metal wire 61 to cut the back plate 4 in the same manner as in the cutting step S9.
4 Remove from above. Then, in the phosphor layer forming step S5, the same phosphor paste as in the case of the PDP 40 is applied from above the partition walls 48 and dried, so that
The phosphor layer 54 is formed on the upper surface of the coat 52 and the side surfaces of the partition walls 48. At this time, similarly to the case shown in FIG. 5B, the space between the partitions 48 arranged on the overcoat 52 is filled with the phosphor paste, and the coated metal wire 61 is also covered with the phosphor paste. However, as described above, the phosphor paste shrinks when the organic solvent is volatilized and removed by the drying treatment after the application. Therefore, the phosphor layer 54 is fixed to the upper surface of the overcoat 52 and the side surface of the partition wall 48 with an appropriate thickness, and the coated metal wire 61 is exposed. Covered metal wire 61
Is provided with a protective film 60 on its outer peripheral surface and its surface is sufficiently smooth, so that the wettability with the phosphor paste is poor, so that the phosphor paste does not remain on the surface after the drying shrinkage. It is. Although the resin component remains in the phosphor layer 54 in the above-mentioned drying treatment step, it is decomposed and removed during the heat treatment in the subsequent heat treatment step S8 (see FIG. 4).

After the display discharge electrode 82a and the phosphor layer 54 are provided as described above, the fixing paste application step S6 to the discharge gas sealing step S11 shown in FIG. 4 are performed in the same manner. The PDP 80 is manufactured. At this time, the covering metal wire 61 for forming the display discharge electrode 82b is disposed at the same interval as the one forming the display discharge electrode 82a. Is used except that
This is performed in the same manner as in the case where the display discharge electrodes 56a and 56b are provided in the DP 40. That is, the rear plate 44 is positioned as shown in FIG.
(b) to (d), as shown in FIG.
Are fixed at both ends on the overcoat 52 by the glass layer 68 at a position between
1 is pressed into a predetermined position on the top of the partition wall 48 and is fixed at that position. In this embodiment, the frame 88 used in the metal wire arranging step S7 corresponds to a frame.

As is apparent from the above description, in the above-described manufacturing method, a pair of similar frames 88 for separately disposing the display discharge electrodes 82a and 82b are provided on the PDP 8.
0 to produce Therefore, it is necessary to accurately control the relative positions of the pair of frames 88 placed on the back plate 44 so that the arrangement positions of the coated metal wires 61 are the same in the plane direction of the back plate 44. . This control is performed by, for example, a plurality of pairs of display discharge electrodes 82a and 82a.
b, a plurality of covered metal wires 61 are welded to the same positions of the opposite sides 88a of a pair of frames 88 having the same dimensions and the same shape to form a metal wire integrated frame 78 of the same shape. This can be done relatively easily by manufacturing and using this and positioning and arranging it as shown in FIGS. 5 (c) and 5 (d). By doing so, the interval between the plurality of display discharge electrodes 82a or between the plurality of display discharge electrodes 82b becomes uniform, and the interval between each pair of the plurality of pairs of display discharge electrodes 82a and 82b (discharge distance) ) Can be provided with a plurality of pairs of display discharge electrodes 82a and 82b.

In short, in the present embodiment, the display discharge electrodes 56a, 56b
Are arranged on the rear plate 44 in the same manner as when the display discharge electrodes 82b are arranged on one plane,
Prior to the fixing paste application step S6 to the heat treatment step S8 for disposing the display discharge electrode 82b, the first top paste application step S42 to the baking step S45 are performed, so that the display discharge electrode 82b is 100 (μ) in the height direction of the partition wall 48 from the coated metal wire 61 for forming
m) The display discharge electrode 82
The display discharge electrode 82a is separated from the partition wall 48 so as to be parallel to
Are arranged in parallel in a second direction orthogonal to the longitudinal direction and at a predetermined interval of about 750 (μm).
Therefore, the pair of display discharge electrodes 56a and 56b
Are positioned up and down in the height direction of the partition wall 48 and are substantially opposed to each other.

Therefore, also in the present embodiment, since the display discharge occurs exclusively between the opposing surfaces of the display discharge electrodes 82a and 82b, the distance between the electrode surfaces contributing to the discharge becomes substantially uniform. As in the case, local sputtering is suppressed. In this case, the plurality of metal wires 56 for constituting the display discharge electrode 82b are parallel to each other along a plane and at a predetermined interval on the back plate 44 and the frame 88 having a larger thermal expansion coefficient than the metal wires 56. Is fixed to the top of the partition wall 48 in a state of being fixed so as to be lined up, and is fixed to one surface of the overcoat 52 provided on the back plate 44 thereof. for that reason,
The mutual interval is maintained at the predetermined interval, and the back plate 44 and the metal wire 5
6 and the frame 88, the frame 88 is expanded more than the back plate 44 and fixed on the overcoat 52 in a straight state, respectively. Can be suitably arranged at predetermined intervals, and thus, a pair of display discharge electrodes 82a,
82b can be easily arranged in parallel with each other. In addition, various effects based on the fact that the display discharge electrodes 82a and 82b are composed of the coated metal wires 61 and there is no need to form a film on the front plate 42 can be obtained as in the case of manufacturing the PDP 40.

In this embodiment, in the first top paste application step S41, a thick film insulating paste is applied to the top of the lower partition dry body 84a for forming the lower portion of the partition 48, and the intermediate paste layer 86 is formed. In the lower metal line arranging step S43, like the plurality of coated metal lines 61 provided on the top of the partition wall 48 and constituting the display discharge electrode 82b, they are fixed to the frame 88 and each of the lower metal line The plurality of coated metal wires 56 are pressed from above toward the top of the lower partition wall dry body 84a at a position inside the pair of opposed sides 88a, 88a of the frame 88, and a part of the pressed metal wires 56 is subjected to the intermediate paste. By pressing the frame 88 into the layer 86 and positioning the frame 88 against the back plate 44, the plurality of coated metal wires 6
1 is arranged at a predetermined position on one surface thereof, and further, in the firing step S45, the plurality of coated metal wires 61 are formed by the part of the partition wall 48 generated from the intermediate paste layer 86 and cured in the cooling process. 48, by being fixed to the top of the portion generated from the lower partition dry body 84a, it is positioned at a height of about 100 (μm) in the height direction of the partition 48 from the display discharge electrode 82b. In parallel, the display discharge electrodes 82a are provided in a state where they are individually covered with the dielectric film 58. Therefore, each of the plurality of pairs of display discharge electrodes 82 a and 82 b provided in the PDP 80 has a metal wire 5 whose outer peripheral surface is individually covered with the dielectric film 58.
6, the manufacturing process is simplified because there is no need to perform any film forming processing for providing electrodes on the front plate 42. In this case, a plurality of pairs of display discharge electrodes 8
The plurality of metal wires 56 for forming the respective 2a and 82b are fixed to the frame 88 so as to be arranged in parallel with one another along a plane and at a predetermined interval of about 750 (μm). Is fixed on the overcoat 52 so as to be located at a position corresponding to the top of the partition wall 48, that is, at an intermediate portion in the height direction of the partition wall 48. Therefore, the interval between the plurality of metal wires 56 located on one plane is reduced. The frames are held at the predetermined intervals, and their relative positions are
8, the display discharge electrodes 82a and 82b forming a pair can be easily arranged so as to be parallel to each other.

FIG. 15 shows a display discharge electrode 56 of the PDP 40.
FIG. 16 (a) is a process diagram illustrating another example of a method of disposing the display discharge electrode 82 b of the PDP 80.
(D) is a diagram for explaining the state of the back plate 44 at each stage of the process shown in FIG. 15 and FIG. 15 is performed following the protection film forming step S75 of FIG. 6, and FIG.
Only the following are shown. In the figure, auxiliary frame fixing step S
At 76, the frame 63 or 88 to which the coated metal wire 61 is welded as shown in FIG.
(Hereinafter, it is referred to as a frame 63 for convenience of description. The same applies to FIG. 16.) In the vicinity of one opposing side 63 a, that is, on one end side of the coated metal wire 61,
For example, similarly to the frame 63, a band-like auxiliary frame 90 made of a 426 alloy, nickel, or the like and having a thickness of about 0.2 (mm) is fixed at both ends thereof with crystallized glass or the like. In addition,
As shown in an enlarged view of the vicinity of the fixed portion in FIG. 17, a dent 92 is formed by half etching or the like at a position of the frame 63 where the auxiliary frame 90 is fixed. A thin portion 94 having a reduced thickness is provided, and the frame 63 and the auxiliary frame 90 are fixed in a state where the recess 92 and the thin portion 94 are engaged. For this reason, the auxiliary frame 90 is fixed to the surface of the frame 63 to which the coated metal wire 61 is welded such that one surface 96 of the coated metal wire 61 is located on the same plane as the welding surface, and substantially. It is located between the coated metal wire 61 and the frame 63.
In this embodiment, the auxiliary frame fixing step S7 is performed.
Reference numeral 6 corresponds to the auxiliary support fixing step.

Next, in the metal wire auxiliary fixing step S77, for example, a paste containing crystallized glass similar to that used for the above-mentioned fixing is applied onto one surface 96 of the above-mentioned auxiliary frame 90. Heat treatment at a temperature of about 500 (° C). Thereby, each of the coated metal wires 61 is fixed to the one surface 96 of the auxiliary frame 90 in a state where they are electrically insulated from each other by the fixing layer 98 made of crystallized glass generated from the paste. FIG.
(a) shows this state. The above-described auxiliary frame fixing step S76 and metal wire auxiliary fixing step S77
At the same time, they may be fixed together by crystallized glass or the like by heat treatment. Subsequent metal wire cutting step S78
In, the coated metal wire 61 is cut between the opposing side 63 a and the auxiliary frame 90. Then, the opposite side removing step S
In 79, for example, the opposite side 63a of the frame 63,
Opposing sides located near the auxiliary frame 90 by folding from the groove 100 provided in advance by etching or the like on sides 63b, 63b (sides extending vertically and extending left and right in the figure) located between 63a. 63a is removed from the frame 63. FIG. 16B shows this state. As a result, the metal-wire-integrated frame 102 is configured such that the covering metal wire 61 is fixed to a generally rectangular frame including the frame 63 having a U-shape in plan view and the auxiliary frame 90 in the shape of a long strip. You. Further, the coated metal wire 61 has one end fixed to the auxiliary frame 90 with crystallized glass and the other end welded to the opposite side 63 a of the frame 63, so that the arrangement interval when both ends are welded to the frame 63. Is kept.

The metal line arrangement step S7 shown in FIG.
As described above, one end of the covered metal wire 61 is
The fixing layer 98 is attached to the auxiliary frame 90 in place of the opposing side 63a.
It is carried out in a state of being fixed. FIG. 16 (c-1),
(c-2) shows an arrangement state of the metal wire integrated frame 102 on the back plate 44. The relative positioning of the back plate 44 and the metal wire integrated frame 102 is performed in the same manner as in the embodiment shown in FIGS. In the figure, a glass component such as crystallized glass is included on the overcoat 52 along the longitudinal direction of the partition wall 48 at a position corresponding to between the opposing side 63a remaining on the frame 63 and the partition wall 48. A paste layer 62 is provided and four fixing holes 1 provided in a frame 63.
A frame fixing paste layer 106 having a composition similar to that of the paste layer 62 is provided at a position corresponding to 04.
However, in FIG. 5B, FIG. 8 and the like, the opposite side 6 removed in the left end side, ie, the opposite side removing step S79.
The paste layer 62 provided on the 3a side is not provided in the present embodiment. The fixing hole 104 is
For example, an etching process or the like is provided on both ends in the longitudinal direction of a pair of sides 63b, 63b vertically continuous from both ends of the opposite side 63a of the frame 63 in order to fix the sides 63b, 63b to the overcoat 52. For example, each of which is constituted by four rectangular holes arranged in two rows and two columns. At a position between the paste layer 62 and the opposite side 63a, a holding jig 108 for holding the coated metal wire 61 toward the overcoat 52 is placed.

In this embodiment, FIG.
As is clear from -1), the coated metal wire 61
The metal-wire-integrated frame 102 is placed on the overcoat 52 in a direction opposite to the back plate 44 with the 3 interposed therebetween. Therefore, the thickness of the frame 63 and the height of the partition wall 48 are, for example, about 0.2 (mm) and 100 to 300 (μm), respectively.
m), which is extremely large compared to the thickness of the paste layer 62 of about 20 to 30 (μm) applied and formed.
As shown by a broken line in FIG. 18 showing a cross section near the opposite side 63a of the frame 63, the metal wire integrated frame 10
Simply placing the 2 on the overcoat 52 does not allow the coated metal wire 61 to contact the paste layer 62. Therefore, as described above, the holding jig 108 is placed on the coated metal wire 61 at a position between the paste layer 62 and the opposing side 63a, and the coated metal wire 61 is pressed toward the overcoat 52. As a result, the paste layer 62
It is pushed inside.

As described above, the coated metal wire 61 is
After being arranged on the upper side, the heat treatment step S8 shown in the above 4 is performed, whereby the paste layer 62 to the glass layer 68
Is generated, and the frame fixing layer 110 mainly composed of crystallized glass is generated from the frame fixing paste layer 106. Then, in the cooling process of the heat treatment, the glass layer 68 and the frame fixing layer 110 are hardened, so that the end on the side 63 a side of the covered metal wire 61 is fixed on the overcoat 52 by the glass layer 68. At the same time, a pair of sides 63b, 63b of the frame 63 are fixed on the overcoat 52 at both ends in the longitudinal direction by the frame fixing layer 110 generated at the position where the fixing hole 104 is provided. At this time, also in this embodiment, similarly to the embodiment shown in FIGS. 2 to 8, the frame 63 is expanded relatively more than the back plate 44, and the coating is performed according to the expansion amount of the frame 63. With the metal wires 61 elastically stretched and straightened, the frame 63 and the coated metal wires 61 are fixed on the overcoat 52 provided on the back plate 44 thereof. Therefore, after the end of the heat treatment step S8, elastic elongation based on the difference in the amount of expansion remains in the coated metal wire 61, and a tension corresponding to the amount of elongation is applied and straightness is maintained. Become.

In this embodiment, the end of the coated metal wire 61 located on the side opposite to the opposite side 63a is not fixed on the overcoat 52. However, the auxiliary frame 90, the end of which is fixed in advance in the metal wire auxiliary fixing step S77, is
Is fixed on the overcoat 52 by the frame fixing layer 110 in the fixing hole 104, so that it is indirectly fixed on the overcoat 52 via the frame 63. Therefore, the end of the coated metal wire 61 on the auxiliary frame 90 side is indirectly fixed on the overcoat 52 via the auxiliary frame 90 and the frame 63, and both ends are cooled by heat treatment. Glass layer 68 and frame fixing layer 1 cured in the process
By 10, it is substantially fixed on the overcoat 52. Therefore, as described above, the coated metal wire 61 is provided in a state where tension is applied.

As described above, the coated metal wire 61
Even after one end is fixed to the auxiliary frame 90, the arrangement state at the time when both ends are fixed to the frame 63 is maintained. The display discharge electrodes 56a and 56b or the display discharge electrodes 82b are disposed on the back plate 44 at a desired arrangement interval.

After the coated metal wire 61 is fixed directly on the overcoat 52 at one end and the other end indirectly at the other end, in the cutting step S9, the opposite side 63a side The end is the opposite side 6
While being cut between 3a and the glass layer 68, the side 63a was also left on the opposite side 63a side by breaking from the previously formed groove 100 in the same manner as the previously removed opposite side 63a side. The opposite side 63a is also removed. FIG. 16D shows this state. This allows
The electrical short-circuit state of the coating metal wire 61 via the frame 63 is eliminated, and a plurality of pairs of the display discharge electrodes 56a and 56b or a plurality of the display discharge electrodes 56a and 56, respectively.
b and 82b are electrically independent. At this time, as shown in the figure, a pair of sides 63 extending in the longitudinal direction of the covered metal wire 61 fixed on the overcoat 52 by the frame fixing layer 110 in the fixing hole 104.
The b, 63b and the auxiliary frame 90 fixed thereto remain on the overcoat 52 as they are. Therefore, the end of the covered metal wire 61 on the side of the auxiliary frame 90 remains fixed to the auxiliary frame 90. However, as described above, the auxiliary frame 90 is covered with the insulating material with the metal wire 56 covered. It is not necessary to remove the auxiliary frame 90 because it is fixed by the fixing layer 98 made of and the electrical insulation is secured. Note that the following steps are the same as those in the above-described embodiment, and a description thereof will be omitted.

FIG. 19 shows the cutting step S9 or S46.
FIG. 8 is a diagram for explaining another example of the embodiment. In the figure, frame 6
3, the opposing sides 63a and 63b are separated from each other in the above-described groove 100 provided at both ends in the left-right direction in the figure. However, the coated metal wire 61, which corresponds to the display discharge electrode 56a functioning as a scanning electrode, is cut between the opposite side 63a, the auxiliary frame 90, and the glass layer 68, while functioning as a sustain electrode. Both ends corresponding to the display discharge electrode 56b are not cut. For this reason, of the coated metal wires 61, those that function as the display discharge electrodes 56a are individually electrically independent, but all that function as the display discharge electrodes 56b are electrically connected via the opposing side 63a. It is connected to the. Therefore, in this case, since the opposite side 63a can be used as a common lead terminal of the display discharge electrode 56b, there is an advantage that electrode connection performed after the front plate 42 is sealed becomes easy. As is clear from the above description, in the present embodiment, the entire frame 63 remains in the hermetic space even after the PDP 40 is completed. Similarly, in the PDP 80, the opposite side 88a can be used as a lead terminal. In this case, the display discharge electrode 82a provided through the partition wall 48 on the lower side of the coated metal wire 61 is constituted. Are cut off in the same manner as in the above-described embodiment, and are electrically separated from each other. On the other hand, those disposed at the top of the partition wall 48 and functioning as the display discharge electrodes 82b are all connected to the opposite side 88a. Is maintained. In addition, although the auxiliary frame 90 is used in the figure, the auxiliary frame 90 is not used, and the same applies to a case where both ends of the coated metal wire 61 are fixed on the overcoat 52 with the glass layers 68, respectively. A similar effect can be obtained except for the opposing sides 63a, 63a. In this case, the opposite sides 63b, 63b are removed because they have no significance.

FIGS. 20A to 20D show the display discharge electrodes 56.
a, 56b or metal wires 56 constituting 82a, 82b
It is a figure showing other cross-sectional shapes. 2 to 19 described above.
In the embodiment shown in FIG. 1, the cross-sectional shape of the metal wire 56 and the covering metal wire 61 is circular, but instead of the circular shape, for example, the metal wire 56 having various cross-sectional shapes as shown in the drawing is used. The same effect as in the case of a circle can be obtained by using. Note that, in the figure, the left portion separated by the dashed line is provided so as to face the paired display discharge electrodes 56 and the like, and functions as an opposing surface that actually contributes to the discharge. Therefore, the PD of the embodiment shown in FIGS.
In P40, when the vertical direction in the figure is the height direction of the partition wall 48, one of the display discharge electrodes 56a and 56b is arranged in the direction of the figure, and the other is arranged in the vertical direction opposite to the figure. Further, in the PDP 80 of the embodiment shown in FIGS. 11 to 14, the lower part of the display discharge electrode 82a is located on the upper side of the display discharge electrode 82a, and the lower part of the display discharge electrode 82b is located on the lower side of the figure. It is arranged so that it may go to each. Even in this case, since at least a portion contributing to the discharge is formed of a convex surface smoothly continued in the circumferential direction, the same sputtering suppression effect as in the case of the circular cross section shown in FIG. An effect of suppressing light shielding and an effect of reducing manufacturing costs can be obtained.

While the embodiment of the present invention has been described in detail with reference to the drawings, the present invention can be implemented in other embodiments.

For example, in the embodiments, the case where the present invention is applied to the AC type color PDPs 40 and 80 having the phosphor layer 54 has been described, but the AC type monochrome PDP without the phosphor layer 54, The invention applies equally to other discharge display devices such as LCD backlights.

In the embodiment, the coated metal wire 61
Frame 6 made of 426 alloy, nickel, etc.
3 and 88, the glass powder is electrodeposited on the outer peripheral surface in a glass powder fixing step S73, and a baking step S74 is performed.
However, in the glass powder fixing step S73, the glass powder may be fixed by dipping or spraying instead of electrodeposition. In any case, the dielectric coating 5
Since it is desired to form 8 as densely as possible, it is desirable to set the baking temperature to a temperature at which the dielectric material is sufficiently softened.

In the embodiment, the frame 63,
88 is made of a highly conductive metal material such as a 426 alloy or nickel, and a plurality of metal wires 56 are welded to the metal wires 56 so that current flows through the plurality of metal wires 56 via the frames 63 and 88. Although the electrodeposition process has been performed collectively, the frames 63 and 88 may be formed of an insulator or a material having low conductivity, and the electrodes may be separately attached to the metal wires 56 to perform the electrodeposition process. In this case, the metal wire 56
That is, since the display discharge electrodes 56 or 82 are not electrically short-circuited through the frames 63 and 88, the PDPs 40 and 80 can be configured with all the coated metal wires 61 fixed to the frames 63 and 88.

In the embodiment, the frame 63,
After the metal wires 56 were fixed to the metal wires 88 by welding, the individual outer peripheral surfaces were covered with the dielectric coating 58.However, the order was reversed, and after the dielectric coating 58 was provided on the metal wires 56, the frame 63, 88. It should be noted that the fixing method is such that the paste metal layer 61 is maintained at an intended position in the heat treatment step S8 and the like.
2. It is appropriately determined according to the melting temperature of the fixing layer 98, the frame fixing layer 110, and the like.
3, a dielectric coating 58 is provided avoiding a portion fixed to 88, or a glass powder is fixed to the whole, and the glass powder or the coating 58 is removed only at that portion before or after baking to form the dielectric coating 58. However, if the outer peripheral surface of the metal wire 56 is partially exposed, the dielectric film 58 does not hinder the fixing.

In the embodiment, the heat treatment step S
8 or after the firing step S45, the cutting step S9 or S
In 46, the coated metal wire 61 is connected to the partition 48 and the opposite side 63.
a, 88a to cut the entire frame 63, 88 or their opposing sides 63a, 88a.
However, if there is no particular problem in the configuration of the PDPs 40 and 80, the entire frames 63 and 88 may be left in the discharge space 46. However, even when the frames 63 and 88 are left in the PDPs 40 and 80 in this way, if they are made of a conductive material such as a metal, the frames 63 and 88 function as the scanning electrodes of the coated metal wires 61. Those that function as sustain electrodes and those that function as scan electrodes are individually electrically insulated,
In order to prevent a short circuit between the two ends of the metal wire 56 due to the frames 63 and 88, for example, all the parts functioning as scanning electrodes are cut off to separate them from the frames 63 and 88, and the frames 63 and 88 are separated from the opposite sides 63a and 63a. Between or 8
It is necessary to perform an electrical cutting process such as cutting at an appropriate position between 8a and 88a. In the case of the PDP 80, the coating metal wire 6 for forming the display discharge electrode 82a is used.
After the baking step S45 for fixing 1 to the partition wall 48, the frame 88 was immediately separated and removed in the cutting step S46. However, in the case where the processing is not particularly hindered in the phosphor layer forming step S5 to the heat treatment step S8. , Cutting process S
46 is not provided, and a plurality of pairs of display discharge electrodes 8 are provided in the cutting step S9.
2a, a frame 88 for disposing 82b,
88 may be removed at the same time. Incidentally, in the above-described embodiment using the auxiliary frame 90, the coated metal wire 61 is fixed by the fixing layer 98 made of an insulating material to electrically insulate at least the display discharge electrodes 56a and 82a from each other, and The reason why they are electrically insulated from those corresponding to the display discharge electrodes 56b and 82b is that the metal wires 56 that require different terminal connections are welded to one frame 63 as described above. This is because a coating process or the like is performed in a state of being electrically short-circuited.

In the embodiment, the display discharge electrode 5
6a, 56b and 82b are applied indirectly or directly on the overcoat 52 at each end thereof to the glass layer 68.
However, a paste layer similar to the paste layer 62 is provided on the partition wall 48, and the metal wire integrated frames 78, 10
When placing 2 on the back plate 44, the coated metal wire 61 may be pressed into the paste layer, and the coated metal wire 61 may be fixed on the partition wall 48 with a glass layer generated from the paste layer.

In the embodiment shown in FIGS. 15 to 18, the gap between the opposing side 63a remaining in the frame 63 and the paste layer 62 as shown in FIGS. Is pressed by the holding jig 108 toward the overcoat 52 at the position of the holding jig 108. However, the position where the holding jig 108 is placed can be appropriately changed. It may be between the layer 62. However, in such a case, both ends of the coated metal wire 61 are simultaneously fixed on the overcoat 52 (the sides 63b, 63b of the frame 63 on the auxiliary frame 90 side).
(Fixed with the frame fixing layer 110 in the fixing hole 104 provided on the left end side in FIG. 3), the coated metal wire 61 may be loosened after the holding jig 108 is removed after the fixing. Therefore, in this case, a glass layer is formed on the partition wall 48 so that the slack does not occur, and the coated metal wire 61 is fixed using the glass layer.
It is necessary to adopt a method such that the auxiliary frame 90 side is fixed on the overcoat 52 later, as a separate step of fixing the right end fixed at 08 and the left end fixed to the auxiliary frame 90. In the case of the latter method, for example, after fixing the right end of the coated metal wire 61 on the overcoat 52, the opposing side 63a adjacent thereto is cut off or at least functions as a scanning electrode. After that, the fixing of the side 63b of the frame 63 in the fixing hole 104 provided at the left end and the joining (sealing) of the front plate 42 and the back plate 44 are performed in one step. Good.

In the embodiment shown in FIGS. 15 to 18, in the state where only one end of the coated metal wire 61 is electrically insulated from the auxiliary frame 90 by the fixing layer 98, the metal wire arranging step is performed. Although steps S7 and subsequent steps have been performed, the metal wire arranging step S7 and subsequent steps may be performed after the fixing of the coated metal wires 61 is changed to the auxiliary frames 90 at both ends. In this case, both ends of the covered metal wire 61 are covered by the auxiliary frame 90 and the side 63b of the frame 63 which are brought into close contact with the overcoat 52.
16 (c-1).
Can be fixed without using a holding jig 108 as shown in FIG. Therefore, also in this case, both ends of the coated metal wire 61 can be fixed in one step.

In the embodiment, the coated metal wire 61
The glass constituting the glass layer 68 and the like for directly or indirectly fixing the glass on the overcoat 52 is crystallized glass, but the glass material constituting the glass layer 68 and the like is: It is appropriately determined according to the processing temperature of the process following the fixing. For example, 45 such as sealing of the front plate 42
When only a relatively low temperature processing step of about 0 to 500 (° C.) or less is performed thereafter, an amorphous frit or the like may be used.

In the embodiment, the frame 63,
Although 88 was formed entirely flat, the frame 63,
In the case where 88 is removed after the heat treatment step S8 or the baking step S45, its shape and dimensions are PDP40 or PDP40.
There is no restriction on the shape and dimensions of the 80. For this reason, the thickness is increased further than about 0.2 (mm) described in the embodiment,
Alternatively, the cross-sectional shape perpendicular to the longitudinal direction of the opposing sides 63a, 88a is L-shaped, U-shaped, or the like, and the opposing sides 63a, 63a are formed.
The shapes and dimensions of the frames 63, 88 are appropriately determined so as to suppress the deformation of the plurality of metal wires 56 fixed between the wires or between the wires 88a, 88a due to the tension, or to facilitate the handling, and the display discharge electrodes 56a, It is also possible to make the spacing between the 56b's more uniform.

In the embodiment shown in FIGS. 11 to 14, a plurality of pairs of display discharge electrodes 82a and 82b disposed at two positions in the height direction of the partition wall 48 are all covered with the coated metal wire 61. Although configured, the upper display discharge electrode 82b may be formed as a film on the front plate 42 similarly to the display discharge electrode 24 of the PDP 8 shown in FIG. In this case, the display discharge electrode 82b may be composed of the transparent electrode 28 and the bus electrode 30, or may be composed of only the bus electrode 30. Even in this case, the same effect as that of the embodiment can be obtained except that the display discharge electrode 82b is not separated from the front plate 42 and that a step of forming a film on the front plate 42 is required. it can.

In the embodiment, the distance between the display discharge electrodes 56a and 56b of the PDP 40 and the back plate 44 is h.
= Approximately 100 to 300 (μm), the display discharge electrode 82a of the PDP 80
The distance from the back plate 44 is about 100 (μm), and the display discharge electrode 82
b is about 100 (μm), and the display discharge electrode 82b
Are arranged so as to be substantially in close contact with the front plate 42, but these dimensions, that is, the arrangement positions are appropriately changed according to desired discharge characteristics. Therefore, even when the dimensions of the discharge space 46 are different, it is easy to set the distance to the writing electrode 50 and the like to appropriate values. In addition,
In the PDP 40, the disposition position can be changed by changing the height or the like of the partition wall 48. In the PDP 80, the height of the lower partition dry body 84a, the intermediate partition dry body 84b, and the upper partition dry body 84c is changed. It is possible by changing the parameters. In the embodiment, the display discharge electrode 56
The front plate 42 is directly mounted on and substantially adhered to a, 56b, or 82b. For example, a paste layer containing an insulator or the like (for example, a low softening point glass paste or the like) is provided on the top of the partition wall 48. To provide an appropriate space between the coated metal wire 61 and the front plate 42, for example, by arranging the coated metal wire 61 so as to be pushed into it, for example, a size of about 10 to 100 (μm). Is also possible. In this way, there is an advantage that a decrease in discharge efficiency due to the front plate 42 functioning as a dielectric can be suppressed, and the insulating film generated from the paste layer has an adjacent discharge at the top of the partition wall 48. Since it functions as a partition for physically separating the spaces 46 from each other, there is an advantage that occurrence of erroneous discharge is further suppressed.

In the embodiment, a pair of display discharge electrodes 56a, 56b and the like are provided for one light-emitting section 70. When the cross section is circular, the light shielding property is low, so that a plurality of pairs of display discharge electrodes 56a, 56b and the like may be arranged in one light emitting section 70. In this manner, the light-emitting section 7 can be provided without particularly increasing the amount of light shielding.
Since a plurality of pairs of display discharge electrodes can be arranged according to the size of 0, the effective discharge area is enlarged and higher luminance is obtained.

In the embodiment, the display discharge electrode 5
6a, 56b or 82a, 82b or metal wire 5
6 was composed of W, etc., but Ni, Fe, Al, Ti, Cu,
Ag, Mo, Pt, Ta, Nichrome I (Ni60, Cr16, Fe24), Nichrome III (Ni85, Cr15), Cu-Ag (Cu93, Ag6.3, MgO0.02), YEF4
26 (Ni42, Cr6, Fe), 50 (Ni50, Fe), SUS304 (18Cr, 8Ni, F
e) It may be made of another highly conductive metal material such as SUS316 (18Cr, 12Ni, Fe). However, regardless of which material is used, in the cooling process in the heat treatment step S8, the partition walls 48 are hardened by the hardened upper partition body 48b.
In order to prevent the display discharge electrodes 56a and 56b from being loosened after being fixed to the top and further cooled to room temperature, the material has a thermal expansion coefficient which is equal to or larger than that of the constituent material of the back plate 44 as described above. It is desirable to be composed of a material.

In the embodiment, the dielectric film 58
Is B_TwoO_Three−ZnO −PbO etc.
But B_TwoO_Three-ZnO, CaO-Al_TwoO_Three-SiO_Two, MgO-B_TwoO_Three-SiO_Two, B_TwoO_Three
-SiO _Two, Na_TwoO-B_TwoO_Three-SiO_Two, B_TwoO_Three-ZnO-SiO_Two, PbO-B_TwoO_Three-S
iO_Two-Al_TwoO_Three , SiO_Two-Al_TwoO_Three-B_TwoO _Three-R_TwoO, CaO-BaO-SiO_Two, Si
O_Two-Al_TwoO_Three-CaO, SiO_Two-ZnO-CaO, SiO_Two-B_TwoO_Three-R_TwoVarious such as O
High-permittivity glass with the composition of
Can be. That is, according to the present invention, the display discharge electrode 5
6 and the like are constituted by the metal wires 56 and the display discharge electrodes
Metal wire coating for providing a dielectric coating 58 covering 56 and the like
The process is different from the process of processing the front plate 42 and the rear plate 44
It has been about. Therefore, the processing temperature of the baking step S74
Are set independently of the softening points, etc., of the glasses that make them up
Therefore, the material of the dielectric film 58 is changed to the front plate 42 or the
Without being limited by the maximum processing temperature of the back plate 44
Can be selected. Therefore, it has a high dielectric constant.
Glass material that does not contain high softening point Pb, Na, etc.
The materials and the like also depend on the metal wire 56 based on the required characteristics as a dielectric.
Required as a material to cover
Dielectric on the display discharge electrode 56 etc. while satisfying the required electrical characteristics.
Since the body thickness can be further reduced, the
Accordingly, higher light intensity can be obtained by further reducing the shading.

Further, the diameter of the metal wire 56 constituting the display discharge electrodes 56a, 56b or 82a, 82b and the thickness of the dielectric film 58 are not limited to the numerical values shown in the embodiment.
It is appropriately changed according to the material characteristics, the size of the discharge space 46, the driving voltage, and the like.

In the embodiment, the display discharge electrode 5
6, etc., after forming a protective film 60 on the surface thereof by a sputtering method or the like, were fixed on the partition wall 48 or the lower partition dry body 84a. No problem. Also, the dielectric film 58
The protective film 60 may be formed after the metal wire 56 provided only with the metal is fixed to the partition wall 48. In this case, it is difficult to form a uniform film. However, the protective film 60 does not need to be formed uniformly on the outer peripheral surface of the display discharge electrode 56 or the like. There is no particular problem because it is sufficient if it is formed.

In the embodiment, the light-emitting section 70 is physically separated only in one direction by the longitudinal partition wall 48. However, a grid-like partition wall is provided so that it can be separated in the other direction orthogonal to the partition wall. May be physically separated. However, in this case, crosstalk in the direction along the write electrode 50 is suppressed,
Since there is a problem that it is difficult to form the phosphor layer 54 uniformly, it is desirable that the shape of the partition wall be determined in consideration of these.

Although not specifically exemplified, the present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1A is a perspective view of a conventional AC-type PDP having a three-electrode structure with a part cut away, and FIG. 1B is a view showing a cross section along a write electrode in FIG. .

FIG. 2A is a perspective view, partially cut away, showing the configuration of an AC-type PDP having a three-electrode structure to which the display discharge electrode disposing method of the present invention is applied, and FIG. FIG. 3 is a diagram showing a cross section along a writing electrode in FIG.

FIG. 3 is a diagram illustrating a configuration of a display discharge electrode used in the PDP of FIG. 2;

FIG. 4 is a process chart illustrating a manufacturing process of the PDP of FIG. 2;

5 (a) to 5 (e) are views for explaining states of partition walls and the like at each stage of the manufacturing process of FIG.

FIG. 6 is a process chart illustrating a method of coating a metal wire used in a metal wire arranging process in the manufacturing process of FIG. 4;

FIG. 7 is a view showing a state in which a metal wire or a coated metal wire is fixed to a frame in the coating processing step of FIG. 6;

8 is a plan view showing a state where a metal wire integrated frame is placed on a back plate in a metal wire arranging step of the manufacturing process of FIG. 4;

FIG. 9 is a view illustrating a process of processing the front panel of the conventional PDP shown in FIG. 1;

FIG. 10 is a diagram illustrating a configuration when a color filter is provided in a conventional PDP.

FIG. 11 is a partially cutaway perspective view showing a configuration of a PDP to which another embodiment of the display discharge electrode disposing method of the present invention is applied.

FIG. 12 is a process chart showing a main part of a manufacturing process of the PDP of FIG. 11;

13 (a) to 13 (e-2) are views for explaining states of partition walls and the like at each stage of the manufacturing process in FIG.

FIG. 14 is a view showing a metal wire integrated frame used for manufacturing the PDP of FIG. 11;

FIG. 15 is a process diagram showing a main part of a manufacturing process to which a metal wire arranging method according to still another embodiment of the present invention is applied.

16 (a) to (d) are views for explaining states of metal wires and the like at each stage of a manufacturing process when the arrangement method of FIG. 15 is applied.

FIG. 17 is a perspective view showing a state where the auxiliary frame is fixed to the frame in the manufacturing process of FIG.

18 is a fragmentary cross-sectional view showing a state where the frame is placed on the back plate in the manufacturing process of FIG. 15;

FIG. 19 is a view for explaining a cutting state of a coated metal wire after being fixed on a back plate in still another embodiment of the present invention.

20 (a) to (d) are diagrams showing other examples of the cross-sectional shape of the display discharge electrode which can be used for the PDP shown in FIG. 2 or FIG. 11, respectively.

[Explanation of symbols]

 40: AC type color PDP (discharge display device) 42: Front plate (the other of a pair of parallel flat plates) 44: Back plate (one of a pair of parallel flat plates) 46: Discharge space 48: Partition wall 50: Write electrode 56: Display Discharge electrode (metal wire) 58: Dielectric film (dielectric layer) 62: Paste layer (paste film) 63: Frame (frame-like body) 68: Glass layer (insulating film)

Claims (8)

[Claims] 1. A plurality of light-emitting sections provided in an airtight space formed between a pair of parallel flat plates along a first direction and a second direction substantially orthogonal to the first direction; And a plurality of partition walls provided at positions between the partition walls along the first direction to select a predetermined light-emitting section to emit light, at least in the second direction. And a plurality of pairs of display discharge electrodes provided along the second direction and covered by a dielectric layer to generate and maintain a display discharge for causing the predetermined light emitting section to emit light. A method of disposing the plurality of pairs of display discharge electrodes at predetermined positions in the discharge display device, wherein a partition wall forming step of forming the partition walls at a uniform height on one surface of one of the pair of parallel flat plates; For configuring the plurality of pairs of display discharge electrodes In order to arrange several metal wires parallel to each other along a plane and at a predetermined interval, a thermal expansion coefficient larger than the thermal expansion coefficient of the one parallel plate and the thermal expansion coefficient of the metal wire at both ends thereof is set. A fixing step of fixing to the opposite side of the predetermined frame-shaped body having; a metal wire coating step of individually coating an outer peripheral surface of the metal wire with the dielectric layer; and a predetermined position on one surface of the one parallel flat plate. A paste application step of applying a paste containing a predetermined insulating material to form a paste film; and applying the plurality of metal wires fixed to the frame-shaped body and each covered with the dielectric layer in a longitudinal direction thereof. The frame is placed on one surface of the one parallel plate from above so as to contact the top of the partition at a position inside the opposing side of the frame in a direction along the second direction, and Shape of the one A metal wire arranging step of arranging the plurality of metal wires at predetermined positions on the one surface by positioning with respect to the row flat plate; and the plurality of metal wires arranged on one surface of the one parallel flat plate Is heat-treated at a predetermined temperature while being fixed to the frame-shaped body, thereby forming an insulating film from the paste film and the plurality of metal wires by the insulating film which is cured in a cooling process of the heat treatment. A heat treatment step of directly or indirectly fixing each of the first and second surfaces on the one surface. 2. A plurality of light emitting sections provided in an airtight space formed between a pair of parallel flat plates along a first direction and a second direction substantially orthogonal to the first direction. And a plurality of partition walls respectively provided at positions between the partition walls along the first direction to select a predetermined light emitting section to emit light. And a plurality of pairs of display discharge electrodes which are provided along the second direction and are covered with a dielectric layer and generate and maintain a display discharge for causing the predetermined light emitting section to emit light. A method of disposing the plurality of pairs of display discharge electrodes at predetermined positions in the discharge display device, wherein a partition wall forming step of forming the partition walls at a uniform height on one surface of one of the pair of parallel flat plates; Forming one of the plurality of pairs of display discharge electrodes. A plurality of metal wires are arranged along one plane and parallel to each other at a predetermined interval, and have a thermal expansion coefficient larger than the thermal expansion coefficient of the one parallel plate and the thermal expansion coefficient of the metal wire at both ends. A fixing step of fixing to an opposite side of a predetermined frame-shaped body having an expansion coefficient; a metal wire covering step of individually covering an outer peripheral surface of the metal wire with the dielectric layer; A paste application step of applying a paste containing a predetermined insulating material to a predetermined position to form a paste film, and applying the plurality of metal wires fixed to the frame-shaped body and covered with the dielectric layer, respectively. Along a direction parallel to the second direction, the frame is placed from above on one surface of the one parallel plate so as to abut on the top of the partition wall at a position inside the opposing side of the frame body. , The frame A metal wire arranging step of arranging the plurality of metal wires at a predetermined position on the one surface by positioning with respect to one parallel flat plate, and the plurality of metal wires arranged on one surface of the one parallel flat plate; By performing a heat treatment at a predetermined temperature while the metal wire is fixed to the frame-shaped body, an insulating film is generated from the paste film, and the plurality of metals are formed by the insulating film which is cured in a cooling process of the heat treatment. A heat treatment step of directly or indirectly fixing each of the wires on the one surface; and a position separated by a predetermined distance in the height direction of the partition from a plurality of metal wires fixed to contact the top of the partition. And disposing the other of the plurality of pairs of display discharge electrodes in parallel with each other at a predetermined interval along the second direction so as to be parallel to the plurality of metal wires. Especially Display discharge method of arranging electrode discharge display device according to. 3. The paste applying step includes forming the paste film on a surface of the one parallel flat plate at a position corresponding to a position between the partition and each of opposing sides of the frame. 3. The display discharge electrode of a discharge display device according to claim 1, wherein, in the heat treatment step, the plurality of metal wires are fixed directly or indirectly on one surface of the one parallel flat plate at both ends. Arrangement method. 4. The partitioning step, wherein a partition including an insulating material for forming a part of the partition is provided on a top of a lower partition body provided for forming a lower part of the partition in a process of forming the partition. A top paste application step of applying a forming paste to form a top paste film; and performing the same fixing step and the metal line covering step as for a plurality of metal wires constituting one of the plurality of pairs of display discharge electrodes. The plurality of metal wires fixed to a second frame similar to the frame and covered with the dielectric layer are positioned inside the opposed sides of the second frame. By pressing from above toward the top of the lower partition and pressing a part of the lower partition into the top paste film, and positioning the second frame with respect to the one parallel flat plate, Place multiple metal wires on the surface A lower metal wire arranging step of arranging the plurality of metal wires arranged on one surface of the one parallel flat plate, and performing heat treatment at a predetermined temperature while being fixed to the second frame-shaped body. Baking a part of the partition from the top paste film and fixing the plurality of metal wires to the top of the lower partition by a part of the partition which is hardened in the cooling process of the heat treatment. 3. The method for arranging display discharge electrodes of a discharge display device according to claim 2, comprising: 5. The outer periphery of the plurality of metal wires fixed to the frame or the second frame prior to the metal wire arranging process after the fixing process in the metal wire coating process. 5. The method for arranging display discharge electrodes of a discharge display device according to claim 1, wherein surfaces are individually coated with said dielectric layer. 6. The fixing step includes welding a plurality of metal wires to the metal frame using a metal frame as the frame or the second frame. The metal wire coating step includes: a dielectric powder electrodeposition step of electrodepositing a dielectric powder on an outer peripheral surface of each of the plurality of metal wires; and heat treating at a predetermined temperature to melt the dielectric powder. A dielectric layer generating step of individually generating the dielectric layers on the outer peripheral surfaces of the plurality of metal wires. 7. After the plurality of metal wires stretched between opposing sides of the frame-shaped body or the second frame-shaped body are fixed on one surface of the one parallel flat plate, the plurality of pairs of metal wires are formed. 7. The method according to claim 6, further comprising the step of cutting each of the plurality of metal wires corresponding to one of the display discharge electrodes at a position between the opposite side and the partition. . 8. The cutting step includes cutting each of the plurality of metal wires corresponding to one of the plurality of pairs of display discharge electrodes at a position between the opposing side and the partition, and cutting the frame-shaped metal wires. Body or the second frame is cut at a predetermined position and the frame or the second frame between both ends of the plurality of metal wires corresponding to the other of the plurality of pairs of display discharge electrodes. 8. The method for arranging display discharge electrodes of a discharge display device according to claim 7, wherein an electrical short-circuit state through a body is cut off.