KR100705288B1 - Plasma Display Panel And Method Of Manufacturing The Same - Google Patents

Abstract

The present invention relates to a dielectric layer of a front panel of a plasma display panel.

The plasma display panel according to the present invention includes a scan electrode, a sustain electrode formed of a transparent electrode and a bus electrode, and a dielectric layer having protrusions formed on a portion corresponding to the scan electrode and a portion corresponding to the sustain electrode on the scan electrode and the sustain electrode. .

In addition, the method of manufacturing a plasma display panel according to the present invention may include forming a scan electrode and a sustain electrode on the front glass, and forming one of a dielectric paste and a dry film for the dielectric on the scan electrode and the sustain electrode; And forming protrusions on the portions corresponding to the scan electrodes and the portions corresponding to the sustain electrodes using any one of a pattern printing method, a dispensing method, and an inkjet method on the dielectric paste and the dielectric dry film. Steps.

Accordingly, the present invention forms protrusions in the dielectric layer corresponding to the scan electrode and the sustain electrode of the plasma display panel, thereby reducing the discharge holding voltage, the discharge start voltage, the discharge delay time, and improving the discharge efficiency. It works.

Description

Plasma Display Panel and Manufacturing Method Thereof

1 is a view showing the structure of a typical plasma display panel.

2A is a plan view of a typical plasma display panel.

2B is a cross-sectional view of a typical plasma display panel.

3 illustrates a plasma display panel according to the present invention.

4A is a plan view of a plasma display panel according to the present invention;

4B is a cross-sectional view of a plasma display panel according to the present invention;

5 is a block diagram sequentially illustrating a method of manufacturing a plasma display panel according to the present invention;

6 illustrates a method for manufacturing a front panel of a plasma display panel according to the present invention.

<Description of the symbols for the main parts of the drawings>

300: front panel 301: front glass

302: scan electrode 303: sustain electrode

A: transparent electrode B: bus electrode

304: upper dielectric layer 310: rear panel

311 rear glass 312 bulkhead

313: address electrode 314: phosphor layer

315: lower dielectric layer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a plasma display panel and a method of manufacturing the same, which can improve discharge efficiency by improving a dielectric layer.

In general, a plasma display panel is a partition wall formed between a front panel and a rear panel to form one unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He). An inert gas containing a main discharge gas such as and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 illustrates a structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front panel in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are arranged on a front glass 101 that is a display surface on which an image is displayed. The rear panel 110 on which the plurality of address electrodes 113 are arranged so as to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 100 is a bus made of a metallic material and a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode a made of a transparent material and for mutual discharge in one discharge cell and maintaining light emission of the cell. The scan electrode 102 and the sustain electrode 103 provided as the electrodes b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by a dielectric layer 104 which limits the discharge current and insulates the electrode pairs, and the upper surface of the upper dielectric layer 104 is made of magnesium oxide to facilitate discharge conditions. A protective layer 105 on which MgO) is deposited is formed.

The rear panel 110 has an address electrode 113 arranged in a direction crossing the scan electrode 102 and the sustain electrode 103 arranged in parallel on the front glass 101 on the rear glass 111. The lower dielectric layer 115 is formed on the electrode 113. In addition, a partition wall 112 is formed on the lower dielectric layer 115 to partition the discharge cells, and a phosphor layer 114 is applied to the discharge cell space to discharge R (red), G (green), and B (blue). Visible light having any one color is generated.

Looking at such a general plasma display panel formed in more detail as follows.

FIG. 2A illustrates a plan view of a general plasma display panel, and FIG. 2B illustrates a cross-sectional view of a general plasma display panel.

2A and 2B, in a typical plasma display panel, a scan electrode 102 and a sustain electrode 103 formed of a transparent electrode a and a bus electrode b are formed on the front glass 101, and a dielectric layer is formed on the top glass 101. 104 is formed. The dielectric layer 104 forms a wall charge on the scan electrode 102 and the sustain electrode 103 to maintain the discharge by the discharge sustain voltage, and protects the electrode from ion shock during plasma discharge. In addition, it serves as a diffusion barrier and serves as a base layer for the protective layer 105.

However, as shown in FIG. 2B, the dielectric layer 104 of the conventional plasma display panel is flattened. The flat dielectric layer 104 has a wall charge on the scan electrode 102 and the sustain electrode 103. There is a limit to forming). That is, when a lot of wall charges are accumulated, the discharge start voltage and the discharge holding voltage are also lowered. When the upper portion of the dielectric layer 104 has a flat structure, the discharge start voltage and the discharge sustain voltage are constant because the amount of wall charges is constant. There is a problem in limiting the lowering.

Accordingly, an object of the present invention is to provide a plasma display panel and a method of manufacturing the same that can improve discharge characteristics by improving the dielectric layer of the front panel.

Plasma display panel of the present invention for achieving the above object is a projection electrode and a sustain electrode formed of a transparent electrode and a bus electrode, a protrusion on the portion corresponding to the scan electrode and the sustain electrode on the scan electrode and the sustain electrode A dielectric layer formed and a protective layer formed over the dielectric layer.

The shape of the protrusion is characterized in that it is either a convex curved surface or a right angle based on the dielectric layer on which the protrusion is not formed.

The protrusion may be formed in the dielectric layer corresponding to the portion corresponding to the transparent electrode except for the bus electrode.

The height of the protruding portion is 5 μm or more and 50 μm or less based on the dielectric layer on which the protruding portion is not formed.

The distance between the transparent electrode for the scan electrode and the transparent electrode for the sustain electrode is characterized in that more than 10㎛ 150㎛.

In addition, the method of manufacturing a plasma display panel according to the present invention may include forming a scan electrode and a sustain electrode on the front glass, and forming one of a dielectric paste and a dry film for the dielectric on the scan electrode and the sustain electrode; And forming protrusions on the portions corresponding to the scan electrodes and the portions corresponding to the sustain electrodes using any one of a pattern printing method, a dispensing method, and an inkjet method on the dielectric paste and the dielectric dry film. Steps.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3 illustrates a plasma display panel according to the present invention.

As shown in FIG. 3, a plasma display panel includes a front panel in which a plurality of sustain electrode pairs formed by pairing a scan electrode 302 and a sustain electrode 303 are formed on a front glass 301 that is a display surface on which an image is displayed. A rear panel 310 having a plurality of address electrodes 313 arranged so as to intersect the plurality of sustain electrode pairs on the back glass 311 forming the back surface 300 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 300 is a bus made of a scan material 302 and a sustain electrode 303, that is, a transparent electrode A made of a transparent material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 302 and the sustain electrode 303 provided as the electrode B are included in pairs. The scan electrode 302 and the sustain electrode 303 are covered by an upper dielectric layer 304 that limits the discharge current and insulates the pair of electrodes, the upper dielectric layer corresponding to the scan electrode 302 and the sustain electrode 303. A protrusion is formed at the portion to be made. A protective layer (not shown) formed by depositing magnesium oxide is formed on the dielectric layer 304 having the protrusion formed thereon.

In the rear panel 310, the address electrode 313 is arranged in a direction crossing the scan electrode 302 and the sustain electrode 303 arranged in parallel on the front glass 301 on the rear glass 311. The lower dielectric layer 315 is formed on the electrode 313. In addition, a partition 312 is formed on the lower dielectric layer 315 to partition the discharge cells, and a phosphor layer 314 is applied to the discharge cell space to discharge R (red), G (green), and B (blue). Visible light having any one color is generated.

Looking at the plasma display panel according to the present invention formed in this way in more detail as follows.

4A is a diagram showing a plan view of a plasma display panel according to the present invention, and FIG. 4B is a diagram showing a cross-sectional view of the plasma display panel according to the present invention.

4A and 4B, in the plasma display panel according to the present invention, a scan electrode 302 and a sustain electrode 303 formed of a transparent electrode A and a bus electrode B are formed on the front glass 301. The dielectric layer 304 having protrusions formed on portions corresponding to the scan electrode 302 and the sustain electrode 303 is formed thereon. The protrusion formed on the dielectric layer 304 is preferably formed at a portion corresponding to the transparent electrode 302A for the scan electrode and the transparent electrode 303A for the sustain electrode. The protrusion may form a convex curved surface or a convex right angle surface as shown in FIG. 4B based on the dielectric layer 304 on which the protrusion is not formed. At this time, the height of the protrusion formed in the dielectric layer 304 is 5 μm or more and 50 μm or less based on the dielectric layer 304 in which the protrusion is not formed.

The dielectric layer 304 formed as described above forms wall charges on the scan electrode 302 and the sustain electrode 303. The dielectric layer 304 of the plasma display panel according to the present invention is used as the scan electrode 302 and the sustain electrode ( Protruding portions are formed in the dielectric layer 304 corresponding to the portion 303, thereby increasing the amount of wall charges accumulated on the protruding portions, thereby reducing the discharge start voltage and the discharge holding voltage of the plasma display panel.

In addition, the discharge path is increased while the discharge generated between the scan electrode 302 and the sustain electrode 303 bypasses the dielectric layer 304 on which the protrusion is formed, thereby improving the discharge efficiency.

The distance between the transparent electrode 302A for scan electrode and the transparent electrode 303A for sustain electrode formed at this time is 10 µm or more and 150 µm or less. This is the distance between the transparent electrodes for using the positive light region. The use of such a positive light region makes the discharge path longer, which further improves the discharge efficiency.

Looking at the manufacturing method of the plasma display panel according to the present invention as follows.

5 is a block diagram sequentially illustrating a method of manufacturing a plasma display panel according to the present invention.

As shown in FIG. 5, the method of manufacturing a plasma display panel according to the present invention includes an assembly process including a front panel manufacturing process listed on the left side of FIG. 5, a rear panel manufacturing process listed on the right side, and a sealing process listed below. do.

First, the front panel manufacturing process listed on the left side of FIG. 5 will be described. The front panel first prepares a front glass as a substrate (501), and then a plurality of sustain electrode pairs are formed on the front glass (502). Thereafter, an upper dielectric layer having a protrusion corresponding to the sustain electrode pair is formed on the sustain electrode pair (503). Thereafter, a protective layer is formed on the upper dielectric layer on which the protrusion is formed (504).

Next, the rear panel manufacturing process listed on the right side of FIG. 5 will be described. Like the front panel, the rear panel prepares a rear glass, which is a base material (511), and a plurality of address electrodes are formed on the rear glass so as to face and cross the sustain electrode pair formed on the front panel (512). Thereafter, a lower dielectric layer is formed over the address electrode (513), and a fluorescent layer is formed over the lower dielectric layer (514).

The front panel and the rear panel manufactured as described above are sealed to each other (520) to form a plasma display panel (530).

Looking at the manufacturing method of the front panel of the plasma display panel according to the present invention as described in more detail as follows.

6 is a diagram illustrating a method of manufacturing a front panel of a plasma display panel according to the present invention.

As shown in FIG. 6, in step (a), scan electrodes 302 and sustain electrodes 303 which are sustain electrode pairs are formed on the front glass 301.

The scan electrode 302 and the sustain electrode 303 are formed of the transparent electrodes 302A and 303A and the bus electrodes 302B and 303B. Looking at an example of a method of forming the scan electrode 302 and the sustain 303 electrode, After laminating a dry film on the transparent electrode film formed of ITO (Indium Tin Oxide) material made of indium oxide and tin oxide, exposing it with a pattern of a photo mask in which a predetermined pattern is formed, and then exposing and etching Scanning transparent electrode 302A and sustaining transparent electrode 303A are formed.

The bus electrodes 302B and 303B are formed on the scanning transparent electrode 302A and the sustain transparent electrode 303A, respectively. Looking at an example of the formation method, the photosensitive silver (Ag) paste is screen printed ( After printing by a screen-printing method, a bus electrode is formed using an exposure process similarly to the above-described transparent electrode forming method. Thereafter, the substrate is heated to a temperature of about 550 ° C. and fired to form the scan electrode 302 and the sustain electrode 303.

Subsequently, in step (b), the dielectric paste 304 is coated on the front glass on which the scan electrode 302 and the sustain electrode 303 are formed. At this time, a dielectric paste may be applied to form a dielectric layer, but it may be formed using a dry film for dielectrics.

Thereafter, in step (c), the photomask 610 having a predetermined pattern formed on the dielectric paste 304 is placed and exposed.

Finally, in step (d), the uncured portion is developed at the time of exposure and fired at a temperature of about 500 ° C. or more and 600 ° C. or less to form a dielectric layer 304 having protrusions. The protrusions formed at this time are formed in the dielectric layers corresponding to the scan electrodes 302 and the sustain electrodes 303. Preferably, protrusions are formed at portions corresponding to the transparent electrode 302A of the scan electrode and the transparent electrode 303A of the sustain electrode. The height of the formed protrusion is 5 µm or more and 50 µm or less based on the dielectric layer on which the projection is not formed. At this time, although the protrusions can be formed in the dielectric layer by using the same pattern printing method as the above-described method, the protrusions can be formed by the dispensing method or the inkjet method, which is a direct patterning method.

As such, the distance in the cell from the dielectric layer including the protrusion to the rear panel is reduced, thereby reducing the time for which the discharge is delayed.

As described above, the technical configuration of the present invention can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, the present invention forms protrusions in the dielectric layer corresponding to the scan electrode and the sustain electrode of the plasma display panel, thereby reducing the discharge holding voltage, the discharge start voltage, and the discharge delay time. The efficiency is improved.

Claims (6)

A scan electrode and a sustain electrode formed of a transparent electrode and a bus electrode; And A dielectric layer formed on the scan electrode and the sustain electrode on a portion corresponding to the scan electrode and on a portion corresponding to the sustain electrode; Including; And the protrusion is formed in a dielectric layer corresponding to a portion corresponding to the transparent electrode except for the bus electrode. The method of claim 1, The protrusion may have a convex curved surface or a right angle surface based on the dielectric layer on which the protrusion is not formed. delete The method according to claim 1 or 2, And a height of the protrusion is 5 μm or more and 50 μm or less based on the dielectric layer on which the protrusion is not formed. The method of claim 1, And a distance between the scan electrode transparent electrode and the sustain electrode transparent electrode is 10 μm or more and 150 μm or less. Forming a scan electrode and a sustain electrode on the front glass; Forming one of a dielectric paste and a dielectric dry film on the scan electrode and the sustain electrode; And A protrusion is formed on the portion corresponding to the scan electrode and the portion corresponding to the sustain electrode by using any one of a pattern printing method, a dispensing method, and an inkjet method on one of the dielectric paste and the dielectric dry film. Forming; And the protrusion is formed in a dielectric layer corresponding to a portion corresponding to the transparent electrode except for the bus electrode.

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