JPH04357653A - Flat image display device and manufacture thereof - Google Patents

Abstract

PURPOSE:To form a proper joint between a metal support body for fixing an electrode body and a front container or back container with high reliability in a flat image display device using an electron beam, and ensure a fluorescent display section to be aligned with the electrode body with high precision. CONSTITUTION:A flat image display device is constituted of a fluorescent display section 2 formed on a front container 1, a metal support body 4 planted in front and back containers 1 and 3, an electrode body 5 fixed to the metal support body 4, a terminal 6 and a seal section 7 to seal the front and back containers 1 and 3 in vacuum. The metal support body 4 is subjected to high-frequency heating or the like, thereby locally heating the front container 1 adjacent to the body 4. When the heating temperature reaches a processing temperature level, the body 4 is pressed, and buried or planted in the front container 1. The electrode body 5 is equipped with an electron source section for generating an electron beam and in addition, has a function for accelerating, controlling and deflecting an electron beam. Furthermore, the body 5 is aligned with the fluorescent display section 2 in such a way as keeping the beam incident on the predetermined position, and then fixed to the metal support body 4. Thereafter, the front and back containers 1 and 3 are coupled to each other, and sealed with low-melting point glass or the like at the seal section 7 in vacuum.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel image display device used in color television receivers, computer terminal displays, etc., and a method for manufacturing the same.

0002

2. Description of the Related Art In recent years, flat panel image display devices have been developed that use liquid crystals, plasma discharge for light emission, and electron beams like conventional cathode ray tubes. Among these, a flat panel image display device using an electron beam uses an electron emission source in a vacuum and a group of planar electrodes to cause the electron beam to strike a desired pixel of a phosphor screen formed on a front container to emit light.

[0003] Hereinafter, with reference to the drawings, Japanese Unexamined Patent Application Publication No. 62-
An example of a conventional flat panel image display device disclosed in Japanese Patent No. 272431 will be described.

FIG. 8 shows a schematic perspective view of a conventional flat panel image display device. In FIG. 8, a flat panel image display device 101 includes a front container 102, a plurality of electrode group blocks 103, and a back electrode plate 104. A fluorescent screen 118 is formed on the front container 102, and a plurality of pedestals 1
20 is adhesively fixed with low melting point glass or the like. Front container 1
02 is usually made of glass, and the pedestal 120 is made of a metal whose coefficient of thermal expansion is close to that of the glass.

[0005] Both of these are placed at predetermined positions and heated to 450°C to 5°C.
By heating and cooling to 00°C, the low melting point glass is melted and hardened to be adhesively fixed. The pedestal 120 has a fluorescent screen 11
Reference pin 12 using the black pattern 119 of 8 as a reference.
1 is fixed in a predetermined position by welding or the like. This reference pin 121 is a positioning reference for the electrode group block 103, and by fitting a reference hole (not shown) provided in the electrode group block 103 into the reference pin 121, the electrode group block 103 is positioned and fixed at a predetermined position. do. As a result, the fluorescent screen 118 and the electrode group block 103 are aligned.

[0006]

[Problems to be Solved by the Invention] However, the above configuration has the following problems. The first problem is that when the pedestal is adhesively fixed to the outer container with low melting point glass, a large thermal stress is generated in the adhesive part. That is, because the coefficients of thermal expansion of the front container, the pedestal, and the low-melting glass are different even though they are close to each other, thermal stress is generated in the bonded portion. In particular, a large stress concentration occurs on the front container and low melting point glass that are in contact with the end of the metal pedestal. Since these are brittle materials, they are extremely weak against tensile stress.
Depending on the magnitude of external loads such as thermal stress and vacuum stress when atmospheric pressure is applied, the outer container may be damaged starting from the stress concentration area.

The second problem is that it is necessary to fix a reference pin, which serves as a reference for positioning the electrode group block, at a predetermined position on the pedestal, which is adhesively fixed as described above. That is, when adhering and fixing the pedestal to the front container, heating and cooling are required as described above, making it difficult to ensure the positional accuracy of the pedestal. Therefore, it is necessary to fix a reference pin, which is a second reference, at a predetermined position on the pedestal, using a specific pattern of the phosphor screen previously formed on the front container as a first reference. This conversion of standards causes deterioration in accuracy, increases the number of man-hours, and complicates the process.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a flat panel image display device having a support for an electrode structure that reduces thermal stress and serves as a highly reliable and highly accurate positioning reference, and a method for manufacturing the same. shall be.

[0009]

[Means for Solving the Problems] In order to solve the above problems, the flat panel image display device of the present invention has the following means.

That is, the flat panel image display device of the present invention has the following features:
It comprises at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode assembly disposed within the vacuum container, The metal support to be fixed is implanted in either the front container or the back container by local heating.

Alternatively, the present invention comprises at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a metal support implanted in the front container by local heating is used as a positioning reference for forming the fluorescent display section, fixing the electrode assembly, or both.

Alternatively, the present invention comprises at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a first metal support implanted in the front container by local heating; and a second metal support implanted in the back container by local heating and engaged with the first metal support. Accordingly, the front container and the back container are positioned in a direction parallel to the fluorescent display section, or in a direction perpendicular to the fluorescent display section, or in both directions.

Alternatively, in the above means, the first metal support is a positioning reference for forming the fluorescent display section, and the second metal support is a fixed positioning reference for the electrode structure. It is.

Further, the method for manufacturing a flat panel display device of the present invention includes at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and a back container formed on the front container. Equipped with an electrode structure arranged in a vacuum container,
In this manufacturing method, the fluorescent display section is formed, the electrode assembly is fixed, or both are formed using a metal support implanted in the front container by local heating as a positioning reference.

Alternatively, in the manufacturing method, the fluorescent display portion is formed using the first metal support as a positioning reference, and the electrode structure is fixed using the second metal support as a positioning reference. be.

[0016]

[Action] The effect of the above means is as follows. That is, by heating the metal support, the glass part of the front container or back container that is in contact with it is locally heated, and when it softens and reaches the processing temperature, it is pressurized and implanted into the glass. . Therefore, unlike the method of bonding using low melting point glass at a temperature below the strain point temperature, residual thermal stress can be reduced because bonding is performed at a temperature above the strain point temperature.

Furthermore, since it is possible to form a fluorescent display portion on the front container by photoetching or printing using the metal support implanted in the front container as a positioning reference, the positional accuracy of both can be improved. Furthermore, since the electrode assembly is positioned and fixed using the same metal support as a reference, there is no need to convert the reference, and the fluorescent display section and the electrode assembly can be aligned with high precision.

Furthermore, the first metal support implanted in the front container and the second metal support implanted in the back container engage with each other, making it possible to position the front container and the back container. becomes. Further, a fluorescent display section is formed on the front container using the first metal support as a positioning reference, and an electrode structure is fixed to the back container using the second metal support as a positioning reference, thereby forming a fluorescent display section and an electrode structure. This makes positioning possible.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A flat panel image display device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic cross-sectional view of a flat panel image display device according to an embodiment of the present invention. In FIG. 1, 1 is a front container, 2 is a fluorescent display section formed on the front container,
3 is a back container, 4 is a metal support implanted in the front container, 5 is an electrode structure fixed to the metal support, 6 is a terminal, and 7 is a sealing part that vacuum-seals the front container and the back container. be.

The metal support 4 is heated by high frequency heating or the like to locally heat the outer container 1 in contact with it, and when the processing temperature is reached, it is pressurized and embedded in the outer container 1 and planted. . The electrode assembly 5 is equipped with an electron source section that generates an electron beam, as well as the functions of accelerating, controlling, and deflecting the electron beam. After alignment, it is fixed to the metal support 4. Thereafter, the back container 3 is combined with the front container 1, and vacuum sealed with a sealing part 7 using low melting point glass or the like.

Although the metal support 4 is implanted in the front container 1 in this embodiment, it may also be implanted in the back container 3 and the electrode structure 5 fixed thereto.

As described above, according to the present embodiment, the metal support 4 for fixing the electrode assembly 5 is implanted in either the front container 1 or the back container 3 by local heating, thereby reducing energy consumption. Thermal stress can be reduced compared to when bonding with melting point glass.

A second embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic plan view of a flat panel image display device showing a second embodiment of the present invention, and FIG.
FIG.

In the figure, 4a, 4b, 4c, 4d,
Reference numerals 4e and 4f denote metal supports which have been implanted in the front container 1 in advance as described above, and the fluorescent display section 2 is a red, green, and blue striped phosphor. In the above configuration, the fluorescent display section 2 is made of metal supports 4a, 4b, 4c, 4d, 4e.
, 4f are formed on the front container 1 as positioning references. For example, the position of the front container 1 is determined by restraining the position in the X and Y directions by the metal support 4a, and restraining the position in the θ direction by the metal support 4b. These metal supports 4a
, 4b as a reference, the fluorescent display section 2 is formed. Since the fluorescent display section 2 is formed by photolithography or printing, it can be formed with high precision based on these standards.

As described above, by using the metal support 4 implanted in the front container 1 by local heating as a positioning reference when forming the fluorescent display part 2, the metal support 4 and the fluorescent display part 2 can be aligned. It is possible to achieve high positional accuracy.

Other embodiments of the present invention will be described below with reference to the drawings. FIG. 4 is a schematic plan view of a flat panel image display device showing another embodiment of the present invention. As described above, the electrode structure 5 is arranged in the fluorescent display section 2 with reference to the metal support 4.
It is attached to an image display device in a state as shown in FIG. If a misalignment occurs between the electrode assembly 5 and the fluorescent display section 2, the electron beam will not strike at a predetermined position and a landing failure will occur, so the electrode assembly 5 and the fluorescent display section 2 must be accurately aligned.

The electrode structure 5 is fixed by positioning in the X and Y directions by means of a reference hole 5a fitted into the metal support 4a, and in the θ direction by means of a reference elongated hole 5b fitted into the metal support 4b. . As described above, by forming the fluorescent display section 2 and fixing the electrode structure 5 using the same metal support 4 as a common reference, both can be aligned with high precision.

Further embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is a schematic cross-sectional view of a flat panel image display device showing still another embodiment of the present invention.

In the figure, reference numeral 8 denotes a first metal support;
is the second metal support. Others are the same as in FIG. 1. The first metal support 8 is implanted in the front container 1 by local heating, and the fluorescent display section 2 is formed on the front container 1 with high precision using this metal support 8 as a positioning reference. Furthermore, the second metal support 9 is implanted in the back container 3 by local heating, and the electrode assembly 5 is accurately positioned and fixed to the back container 3 using this metal support 9 as a positioning reference.

The first metal support 8 and the second metal support 9 are fitted into each other, and the front container 1 and the back container 3
When these are combined, highly accurate positioning of both in a plane parallel to the fluorescent display section 2 is achieved. Accordingly, the fluorescent display section 2 and the electrode structure 5 formed or fixed thereon are aligned with high precision.

As described above, the fluorescent display section 2 is formed on the front container 1 using the first metal support 8 implanted in the front container 1 as a positioning reference, and the second metal support 8 implanted in the back container 3 is formed on the front container 1 as a positioning reference. The electrode assembly 5 is fixed to the back container 3 using the metal support 9 as a positioning reference, and the first metal support 8 and the second metal support 9 are fitted into each other, thereby forming the front container. 1 and the back container 3 are positioned in a plane parallel to the fluorescent display section 2, and the fluorescent display section 2 and the electrode assembly 5 can be positioned with high precision.

Further embodiments of the present invention will be described below with reference to the drawings. 6 and 7 are schematic cross-sectional views of a flat panel image display device showing still another embodiment of the present invention.

In FIG. 6, 10 is a first metal support;
11 is a second metal support. Others are the same as in FIG. 1. The first metal support 10 is implanted in the front container 1 by local heating, and the fluorescent display section 2 is attached to this metal support 10.
It is formed on the front container 1 with high precision using this as a positioning reference. Further, the second metal support 11 is implanted in the back container 3 by local heating, and the electrode assembly 5 is accurately positioned and fixed to the back container 3 using this metal support 11 as a positioning reference.

The first metal support 10 and the second metal support 11 are in contact with each other at their tips,
When combining the front container 1 and the back container 3, the fluorescent display section 2
The positions of both are regulated in the direction perpendicular to . Accordingly, the separation distance between the fluorescent display section 2 and the electrode assembly 5 is set with high precision to a predetermined distance, and the first and second metal supports 10 and 11 act as atmospheric pressure supports. Vacuum stress generated in the front container 1 and the back container 3 can be reduced.

As described above, the fluorescent display portion 2 is formed on the front container 1 using the first metal support 10 implanted in the front container 1 as a positioning reference, and the second metal support 10 implanted in the back container 3 is The electrode structure 5 is attached to the back container 3 using the support body 11 made of
The front container 1 and the back container 3 are perpendicular to the fluorescent display section 2 by fixing them and configuring the first metal support 10 and the second metal support 11 to abut at their tips. The distance between the fluorescent display section 2 and the electrode structure 5 is set with high precision. Furthermore, since the metal supports 10 and 11 act as atmospheric pressure supports, the vacuum stress generated in the front container 1 and the back container 3 can be reduced.

In this embodiment, the electrode assembly 5 is fixed to the second metal support 11 implanted in the back container 3, but as shown in FIG. The electrode assembly 5 is positioned and fixed on the metal support 12, and the metal support 12 and the second metal support 13 implanted in the back container 3 are brought into contact with each other to connect the front container 1 and the back container 3. The separation distance may be regulated. In this case, the distance between the fluorescent display section 2 and the electrode assembly 5 is set by the positional accuracy of the first metal support 12 or other position regulating means.

Furthermore, in this embodiment, the first metal support 1
Although only the separation distance between the front container 1 and the back container 3 was controlled by the second metal support 11 and the second metal support 11, the positioning function in a plane parallel to the fluorescent display section 2 as described above was also performed. It may also be used together.

[0039]

[Effects of the Invention] As described above, the present invention has the following effects. That is, it includes at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed inside the vacuum container, The metal support for fixing the structure is a highly reliable flat plate type that can reduce the thermal stress generated in the front container or the back container by implanting it in either the front container or the back container by local heating. An image display device can be provided.

The present invention further includes at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. By using a metal support implanted in the surface container by local heating as a positioning reference for forming the fluorescent display section, fixing the electrode structure, or both, high alignment accuracy is achieved and quality is improved. Accordingly, it is possible to provide a flat panel image display device and a manufacturing method thereof that simplify the process and reduce the number of man-hours.

The present invention further includes at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a first metal support implanted in the front container by local heating; and a second metal support implanted in the back container by local heating and engaged with the first metal support. By positioning the front container and the back container, it is possible to align the fluorescent display section and the electrode structure and set the separation distance with high accuracy and to set the separation distance, and the metal support is supported at atmospheric pressure. It is possible to provide a highly accurate and highly reliable flat panel image display device by reducing the vacuum stress generated in the front container or the back container by acting as a body.

However, its industrial value is extremely high.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing the configuration of a first embodiment of a flat panel image display device of the present invention.

FIG. 2 is a schematic plan view of a second embodiment of the flat panel image display device of the present invention.

FIG. 3 is a partially enlarged view of a fluorescent display section in a second embodiment of the present invention.

FIG. 4 is a schematic plan view showing the configuration of still another embodiment of the flat panel image display device of the present invention.

FIG. 5 is a schematic cross-sectional view showing the configuration of still another embodiment of the flat panel image display device of the present invention.

FIG. 6 is a schematic cross-sectional view showing the configuration of still another embodiment of the flat panel image display device of the present invention.

FIG. 7 is a schematic cross-sectional view showing the configuration of still another embodiment of the flat panel image display device of the present invention.

[Fig. 8] Perspective view of a conventional flat panel image display device

[Explanation of symbols]

1　Table container 2 Fluorescent display section 3 Back container 4 Metallic support 5　Electrode structure

Claims (6)

[Claims] 1. A vacuum container comprising at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. . A flat plate image display device, wherein a metal support for fixing the electrode structure is implanted in either the front container or the back container by local heating. 2. A vacuum container comprising at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a flat panel image display device, characterized in that a metal support implanted in the front container by local heating serves as a positioning reference for forming the fluorescent display section, fixing the electrode structure, or both; . 3. A vacuum container comprising at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a flat image display characterized in that the fluorescent display section is formed, the electrode structure is fixed, or both, using a metal support implanted in the front container by local heating as a positioning reference. Method of manufacturing the device. 4. A vacuum container comprising at least a front container, a back container sealingly joined to the front container to form a vacuum container, a fluorescent display portion formed on the front container, and an electrode structure disposed within the vacuum container. , a first metal support implanted in the front container by local heating; and a second metal support implanted in the back container by local heating and engaged with the first metal support. A flat panel image display device, wherein the front container and the back container are positioned in a direction parallel to the fluorescent display section, or in a direction perpendicular to the fluorescent display section, or in both directions. 5. Claim 4, wherein the first metal support is a positioning reference for forming the fluorescent display section, and the second metal support is a fixed positioning reference for the electrode structure. The flat panel image display device described above. 6. In the manufacturing of the flat panel image display device according to claim 4, the fluorescent display portion is formed using the first metal support as a positioning reference, and the electrode is formed using the second metal support as a positioning reference. A method for manufacturing a flat panel image display device, characterized in that the structure is fixed.