KR100220798B1 - Plasma display panel and the manufacturing method of address electrode and barrier thereof - Google Patents

Abstract

The present invention is a high accuracy of the address electrode and the partition wall The present invention relates to a plasma display panel capable of high-definition printing and patterning, and to flattening the upper surface of the partition to prevent defective exhaust or deterioration of image quality. Since one side is etched or a stripe-shaped groove is formed, the address electrode and the partition wall are formed to prevent spreading of the address electrode and the lower end of the partition wall and thus high accuracy. It has the effect of enabling high definition printing and patterning.

In addition, in the present invention, the upper surface of the partition is polished and planarized to smooth the movement of gas during the exhaust or gas injection process, thereby shortening the exhaust time and completely exhausting the gas into the discharge space. The removal of contaminants is also performed smoothly, and the amount of contaminants accumulated in the discharge space is reduced, thereby improving the image quality of the plasma display panel.

Description

Plasma display panel, address electrode and partition wall manufacturing method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel and a method for manufacturing the address electrode and the partition wall. The present invention relates to a plasma display panel capable of high-definition printing and patterning, and to flattening the upper surface of the barrier ribs to prevent defective exhaust or deterioration of image quality, and a method of manufacturing the address electrodes and the barrier ribs.

In general, a plasma display panel is a light emitting display device that displays an image by using an internal gas discharge phenomenon, and there is no need to install an active device for each discharge cell, thereby increasing productivity by a simple manufacturing process. It is easy to enlarge, and has a fast response speed, and has attracted much attention as a display device of a flat display device having a large screen, particularly for a high definition television (HDTV) era.

The plasma display panel according to the prior art is positioned to face the front glass substrate 1, which is the display surface of the image, and a predetermined distance therebetween, as shown in FIGS. 1 and 2. And a plurality of stripe sustain electrodes 3 formed on opposite surfaces of the rear glass substrate 2 and the rear glass substrate 2 of the front glass substrate 1, and formed on the sustain electrode 3, respectively. A dielectric layer 4 for limiting discharge current, a protective layer 5 formed on the dielectric layer 4 to protect the sustain electrode 3, and the front glass substrate 1 of the rear glass substrate 2; A plurality of stripe-shaped address electrodes 6 formed on opposite surfaces of the plurality of stripe-shaped address electrodes 6, a plurality of stripe-shaped partition walls 7 formed between the address electrodes 6, and a phosphor layer 8 formed on each of the address electrodes 6; ), The front glass substrate (1) and the rear glass substrate (5) It consists of discharge gas injected into the discharge space formed by several partitions 7.

When the driving pulse is supplied to the sustain electrode 2 and the address electrode 6 of the arbitrary cell as described above, the discharge occurs in the corresponding discharge space, and the ultraviolet rays are emitted while the discharge gas is in the plasma state. When the layer 8 is excited, visible light is generated and emitted to the outside of the discharge space through the front glass substrate 1, and when the visible light is emitted, an image display of the corresponding cell can be recognized from the outside.

Meanwhile, the plurality of partitions 7 are formed by a thick film printing method after the plurality of address electrodes 6 are formed. The thick film printing method is a partition material (glass) at each position where the plurality of partitions 7 are to be formed. After screen printing using a paste) Repeat the process of drying for 10 minutes several times (about 10 times) -200 Stack the bulkheads 7 of height and stack the stacked bulkheads 7 580. It refers to the method of baking for about 10 minutes to complete.

In addition, the front glass substrate 1 and the rear glass substrate 2 have a plurality of sustain electrodes 3 formed on the front glass substrate 1 and address electrodes 6 formed on the rear glass substrate 2 perpendicular to each other. When the assembling of the front glass substrate 1 and the rear glass substrate 2 is completed, the discharge space formed by the front glass substrate 1, the rear glass substrate 5, and the plurality of partitions 7 is formed. The exhaust gas is discharged to a high vacuum state, a clean gas is injected / exhausted to remove contaminants in the discharge space, and then a discharge gas such as neon is injected / sealed to complete the plasma display panel.

In the above, when the exhaust or the gas is injected, the gas inside the discharge space passes through the gap between the front glass substrate 1 and the upper surface of the partition wall 7 and moves to the entire discharge space.

However, in the related art, since the surface of the back glass substrate is very smooth, as shown in FIG. There was a problem that high-precision patterning was impossible.

In addition, conventionally, a plurality of partitions are formed by stacking a thick film printing method, and as shown in FIG. 2, irregularities are formed on the upper surface of the partitions, and the upper shape of the partitions is very irregular. The gas is not smoothly moved and exhausting takes a long time, and exhaustion is impossible. The contaminants accumulated in the unevenness are not easily removed by the clean gas, which increases the amount of contaminants accumulated in the discharge space. There was a problem that the image quality of the display panel is deteriorated.

The present invention has been made to solve the above problems, it is possible to prevent the spreading of the lower end of the address electrode or the partition wall high accuracy Plasma display panel that enables high-definition printing and patterning, facilitates gas movement during exhaust and gas injection, shortens exhaust time, completes exhaust, and removes contaminants in discharge space And a method for manufacturing the address electrode and the partition wall.

1 is an exploded perspective view of a plasma display panel according to the prior art,

2 is an enlarged cross-sectional view of the portion A shown in FIG.

3 is a partial cross-sectional view of a plasma display panel according to a second embodiment of the present invention.

4 (a) to 4 (f) are cross-sectional views illustrating a manufacturing process of an address electrode and a partition wall of a plasma display panel according to a second embodiment of the present invention.

5 (a) to 5 (c) are cross-sectional views for explaining the planarization process of the upper surface of the partition wall according to the present invention.

* Explanation of symbols for main parts of the drawings

11: front glass substrate 12: rear glass substrate

12a, 12b: Striped Groove 13: Sustaining Electrode

14 protective layer 15 address electrode

16: partition 17: phosphor layer

21, 22: photoresist 23: polishing wheel

In order to achieve the above object, a plasma display panel according to the present invention includes a front glass substrate which is a display surface of an image, a rear glass substrate which is disposed to face each other with a predetermined distance therebetween, and a rear glass substrate. A plasma display panel comprising a plurality of stripe address electrodes formed on a surface facing the front glass substrate, and a plurality of stripe partition walls formed between the address electrodes and separating cells. The front surface of the glass substrate is characterized in that the entire surface is etched.

In addition, the plasma display panel according to the present invention includes a front glass substrate which is a display surface of an image, a rear glass substrate positioned to face the front glass substrate at a predetermined distance therebetween, and the front glass substrate of the rear glass substrate. 10. A plasma display panel comprising a plurality of stripe address electrodes formed on opposing surfaces and a plurality of stripe partition walls formed between the address electrodes and separating cells, wherein the back glass substrate comprises the plurality of address electrodes. And a stripe groove is formed at each position where the plurality of partition walls are formed, and the plurality of address electrodes and the plurality of partition walls are formed to protrude from the corresponding stripe grooves, respectively.

In addition, according to the present invention, a method of manufacturing an address electrode and a partition wall of a plasma display panel includes a first step of etching an entire surface of a rear glass substrate, and a plurality of stripe address electrodes on the etching surface of the rear glass substrate after the first step. And a third step of forming stripe-shaped barrier ribs between the plurality of address electrodes after the second step, respectively.

In addition, according to the present invention, a method of manufacturing an address electrode and a partition wall of a plasma display panel includes a first step of forming a plurality of stripe grooves on one surface of a rear glass substrate at predetermined intervals, and after the first step, the plurality of stripe grooves. And a third step of forming address electrodes in even-numbered grooves, and a third step of forming partition walls in odd-numbered grooves of the plurality of stripe grooves after the second step.

Hereinafter, an embodiment of a plasma display panel, an address electrode, and a partition wall manufacturing method according to the present invention will be described with reference to the accompanying drawings.

[First Embodiment]

Although the plasma display panel according to the first embodiment of the present invention is not illustrated in the drawings, the front glass substrate, the back glass substrate, the plurality of stripe sustain electrodes, the dielectric layer, the protective layer, It consists of a plurality of stripe address electrodes, a plurality of stripe partitions, a phosphor layer, and a discharge gas.

However, the back glass substrate is roughly etched because its opposite surface to the front glass substrate is etched from the front, and the bottom surface of the address electrode or partition formed on the etched surface does not occur.

Meanwhile, in the method of manufacturing the address electrode and the partition wall of the plasma display panel according to the first embodiment of the present invention, first, one surface of the rear glass substrate, that is, the opposite surface of the front glass substrate is etched entirely (first step), and the first After the second step, a plurality of stripe address electrodes are formed on the etching surface of the rear glass substrate at a predetermined interval (second step), and after the second step, stripe-shaped partition walls are formed between the plurality of address electrodes (step 3). ) A plurality of address electrodes and partitions are completed.

If one surface of the rear glass substrate is etched in the first step, the surface is roughened so that the phenomenon of spreading at the lower end of the address electrode and the partition wall formed in the second and third steps does not occur High-definition address electrodes and partition walls can be printed.

Further, in the third step, the partition wall is formed by the thick film printing method described in the prior art.

Second Embodiment

As shown in FIG. 3, the plasma display panel according to the second embodiment of the present invention includes a front glass substrate 11, a back glass substrate 12, a plurality of stripe sustain electrodes 13, and a dielectric layer ( Not shown), the protective layer 14, the plurality of stripe address electrodes 15, the plurality of stripe partitions 16, the phosphor layer 17, and the discharge gas.

The front glass substrate 11, the sustain electrode 13, the dielectric layer, and the protective layer 14 are as described in the prior art.

The rear glass substrate 12 is disposed to face the front glass substrate 11 with a predetermined distance therebetween, and the stripe grooves 12a and 12b are disposed at respective positions where the plurality of address electrodes 15 and the partition walls 16 are to be formed. ) Is formed, and the plurality of address electrodes 15 and the plurality of partitions 16 protrude from the corresponding stripe grooves 12a and 12b, respectively.

The address electrode and the partition wall manufacturing method of the plasma display panel according to the second exemplary embodiment of the present invention configured as described above will be described with reference to FIGS. 4A to 4F.

First, as illustrated in FIGS. 4A to 4D, a plurality of stripe grooves 12a and 12b are disposed on one surface of the rear glass substrate 12, that is, the surface facing the front glass substrate 11. ) At regular intervals. (First stage)

The first step is a photolithography process using the photoresist 21, that is, application, exposure and development of the photoresist 21, as shown in FIGS. 4A and 4B. By performing only the position where a plurality of stripe-shaped grooves (12a, 12b) of one surface of the rear glass substrate 12 is to be formed (first process), after the first process as shown in Figure 4 (c) The rear glass substrate 12 in the open position is etched and peeled off by a predetermined thickness to form a plurality of stripe grooves 12a and 12b (second process), and the second process shown in FIG. 4 (d) after the second process. As described above, the photoresist 21 remaining on one surface of the rear glass substrate 12 is removed (third process), and a plurality of photo resists 21 are disposed on a surface of the rear glass substrate 12 opposite to the front glass substrate 11. Striped grooves 12a and 12b are formed at regular intervals.

As shown in FIG. 4E after the first step, the address electrodes 15 are formed in the even-numbered grooves 12a of the plurality of stripe grooves 12a and 12b, respectively. (Second stage)

As shown in FIG. 4 (f) after the second step, the partition walls 16 are formed in the odd-numbered grooves 12b among the plurality of stripe grooves 12a and 12b, respectively, by the thick film printing method described in the prior art. Let's do it. (Third step)

As shown in FIG. 3, the lower end portions of the address electrodes 15 and the partition walls 16 formed through the first to third steps are formed in the stripe-shaped grooves 12a and 12b, so that the spreading of the lower ends may occur. High accuracy The high-definition address electrode 15 and the partition 16 can be printed.

On the other hand, after performing the third step of the address electrode and the partition wall manufacturing method of the plasma display panel according to the first and second embodiments of the present invention, the rear glass substrate as shown in Figs. 5 (a) to 5 (c) A photoresist 22 is applied between the plurality of address electrodes 15 formed on one surface of the surface 12 and the plurality of partition walls 16 (step 4), and is shown in FIG. 5 (b) after the fourth step. As described above, polishing using the polishing wheel 23 is performed to planarize the top surfaces of the plurality of partition walls 16 (step 5), and as shown in FIG. 5 (c) after the fifth step. When the remaining photoresist 22 is removed (sixth step), irregularities formed on the upper surface of each partition 16 are removed and planarized.

When the upper surface of each of the barrier ribs 17 is flattened, the movement of the gas is smoothed when the exhaust gas or the gas is injected, so that the exhaust time is shortened and the exhaust gas can be completely performed.

In addition, when the irregularities formed on the upper surface of each partition wall 17 is removed, contaminants may be smoothly removed by clean gas.

As described above, the present invention forms an address electrode and a partition wall after etching one surface of the rear glass substrate or forming a stripe-shaped groove, thereby preventing spreading of the address electrode and the lower end of the partition wall and thus providing high accuracy. It has the effect of enabling high definition printing and patterning.

In addition, in the present invention, since the upper surface of the partition is polished and planarized, the gas is smoothed during the exhaust or gas injection process, thereby shortening the exhaust time, completely exhausting, and removing contaminants in the discharge space. It is performed smoothly to reduce the accumulation of contaminants in the discharge space, thereby improving the image quality of the plasma display panel.

Claims (7)

A plurality of stripe-type address electrodes formed on a front glass substrate which is a display surface of an image, a rear glass substrate positioned to face the front glass substrate with a predetermined distance therebetween, and a front surface of the rear glass substrate opposite to the front glass substrate; And a plurality of stripe-shaped barrier ribs formed between the address electrodes and separating the cells, wherein the back glass substrate is formed by etching the entire surface of the back glass substrate opposite to the front glass substrate. Plasma display panel. A plurality of stripe-type address electrodes formed on a front glass substrate which is a display surface of an image, a rear glass substrate positioned to face the front glass substrate with a predetermined distance therebetween, and a front surface of the rear glass substrate opposite to the front glass substrate; And a plurality of stripe-type barrier ribs formed between the address electrodes and separating the cells, wherein the back glass substrate is formed at each position where the plurality of address electrodes and the plurality of barrier ribs are formed. A stripe groove is formed in the plasma display panel, wherein the plurality of address electrodes and the plurality of partition walls are formed to protrude from the stripe groove. A first step of etching the entire surface of the back glass substrate, a second step of forming a plurality of stripe address electrodes on the etching surface of the back glass substrate at regular intervals after the first step, and after the second step And a third step of forming stripe-shaped partition walls between the plurality of address electrodes. A first step of forming a plurality of stripe-shaped grooves on one surface of the rear glass substrate at predetermined intervals, and a second step of forming address electrodes in even-numbered grooves of the plurality of stripe-shaped grooves after the first step; And a third step of forming barrier ribs in odd-numbered grooves of the plurality of stripe-shaped grooves after the second step. The method of claim 4, wherein the first step includes performing a photolithography process using a photoresist to open only a position where the plurality of stripe-shaped grooves are to be formed on one surface of the rear glass substrate; A second process of forming a plurality of stripe-shaped grooves by peeling the rear glass substrate in an open position after a first process by a predetermined thickness; and removing the photoresist remaining on one surface of the rear glass substrate after the second process And a third process of manufacturing the address electrode and the partition wall of the plasma display panel. The method of claim 3 or 4, further comprising: applying a photoresist between the plurality of address electrodes and the plurality of partition walls formed on one surface of the rear glass substrate after the third step, and after the fourth step. And performing a polishing to planarize the top surfaces of the plurality of partition walls, and a sixth step of removing the photoresist remaining after the fifth step. Address electrode and partition wall manufacturing method. And in the fifth step, the polishing is performed by using a polishing wheel.