KR20060065380A - Manufacturing method of plasma display panel - Google Patents

Abstract

The present invention relates to a method of manufacturing a plasma display panel.

Such a method of manufacturing a plasma display panel according to the present invention includes a plurality of addresses in a direction intersecting a front panel and a plurality of sustain electrode pairs in which a plurality of sustain electrode pairs are formed by pairing a scan electrode and a sustain electrode on a front glass. Electrodes are bonded to the rear panel arranged on the rear glass at a predetermined interval, and forming the rear panel includes forming an address electrode on the rear glass, and then forming a white back on the address including the rear glass. And laminating the barrier dry film and the black layer dry film sequentially or simultaneously on the white back, placing the pattern mask on the black film dry film, and exposing the exposed barrier ribs. Etching the dry film for the black film and the dry film for the black layer Forming a barrier rib and a black layer.

Plasma Display Panel, Bulkhead, Black Layer, Dry Film, Laminating

Description

Manufacturing Method of Plasma Display Panel {MANUFACTURING METHOD OF PLASMA DISPLAY PANEL}

1 is a structural diagram of a typical plasma display panel;

2A through 2E are process diagrams illustrating a black layer forming process of a plasma display panel according to the related art;

3 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel according to the present invention;

4 is a manufacturing process of the rear panel using a dry film according to an embodiment of the present invention,

5a to 5b is a view showing a manufacturing method for a partition (or black layer) green sheet laminated on the back glass of the plasma display panel according to the present invention,

6 is a structural diagram of a partition (or black layer) green sheet according to the present invention;

7 is a manufacturing process of the rear panel using a dry film according to another embodiment of the present invention,

8A to 8C illustrate a method of manufacturing a green sheet for a partition / black layer laminated on a rear glass of a plasma display panel according to the present invention;

9 is a structural diagram of a green sheet for a partition / black layer according to the present invention.

The present invention relates to a plasma display panel, and more particularly, to a method of manufacturing a plasma display panel which can reduce the number of processes and manufacturing cost by changing a method of manufacturing a rear panel of the plasma display panel.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas 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 substrate in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are formed on a front glass 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged 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 substrate 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and to facilitate the discharge conditions on the upper dielectric layer 104 top surface. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear substrate 110 is arranged in such a manner that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear substrate 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

Here, the above-described partition 112, the upper surface of the front glass 101 absorbs the external light generated from the outside to reduce reflection and improve the color purity (purity) and contrast of the front glass 101, etc. The black layer 116 functioning as an array is configured.

As such, the plasma display panel having the structure uses micro discharges to generate visible light in the cells in which the discharges are generated. Barrier ribs are formed between the cells to separate neighboring cells. In addition, a black layer is formed on the partition wall to prevent unnecessary light from being discharged during discharge, thereby lowering the contrast characteristic of the plasma display panel.

2A to 2E illustrate a process of forming a black layer of a plasma display panel according to the related art.

First, referring to FIG. 2A, a lower dielectric 21 is formed on a lower substrate 20 on which an address electrode (not shown) is mounted, and a partition paste 22 having a predetermined thickness is formed on the lower dielectric 21. ) Is formed, and a black layer paste 23 is formed on the partition paste 22. In this case, the partition paste 22 and the black layer paste 23 may be formed by any one of a printing method and a coating method using a black material to reduce reflectance caused by external light. Thereafter, a dry film resin (hereinafter referred to as DFR) 24 is formed on the black layer paste 23 through a laminating process.

Referring to FIG. 2B, the photomask 25 is aligned on the DFR 24 to irradiate light, and after the exposure process of the DFR 24, a developing process is performed.

Referring to FIG. 2C, the DFR 24 of the region exposed to light by the developing process (hereinafter referred to as 'exposure region') remains on the black layer paste 23, while the region not exposed to light ( The DFR 24 of the 'non-exposed area' is etched away.

Referring to FIG. 2D, the sand blasting apparatus 50 is positioned and driven on the partition paste 22, the black layer paste 22, and the DFR 24 that have undergone the above-described development process, thereby driving sand particles to the black layer paste 23. ) And the partition paste 22. At this time, the black layer paste 23 and the partition paste 22 are scraped off due to the sputtering of the sand particles, whereas the paste 22 corresponding to the partition wall and the black layer paste 23 formed on the partition wall have a DFR. (24) Protected by the pattern.

Referring to FIG. 2E, when the black layer and the partition wall formed by being protected by the DFR 24 appear after the sand blasting process, the formed black layer and the partition wall are peeled off to remove the DFR 24. Next, the black layer paste 23 and the partition wall paste 22 are fired. As a result, the black layer on the partition and the upper part of the partition is completed, and a discharge space is formed between the partitions.

However, in the method of manufacturing a plasma display panel as described above, the method of forming a black layer on the top of the rear panel partition layer as shown in FIG. 2 is sand blasted together with the partition layer by applying a black layer paste on the entire upper surface of the partition layer. By doing so, there is a problem that the process is complicated and takes a long time.

Accordingly, the present invention is to solve the above-mentioned conventional problems, an object of the present invention is to simplify the process of the partition of the lower panel and the black layer formed on the partition wall, it is possible to shorten the process time of the plasma panel It is to provide a manufacturing method.

A method of manufacturing a plasma display panel according to the present invention for achieving the above object is to cross a front panel and a plurality of sustain electrode pairs arranged with a plurality of sustain electrode pairs formed by pairing a scan electrode and a sustain electrode on the front glass. A plurality of address electrodes are bonded to the rear panel arranged in the rear glass at a predetermined interval, and the forming of the rear panel includes forming an address electrode on the rear glass, and then including the rear glass. Forming a white bag on the white bag (generally referred to as a dielectric layer; hereinafter referred to as a dielectric layer) by sequentially or simultaneously laminating a barrier dry film and a black layer dry film thereon; On top of the dry film for the black layer, a pattern mask By etching the high-exposure step and the partition wall for the exposed dry film and the black layer is a dry film that comprises a step of forming a barrier rib and a black layer.

Here, laminating the barrier dry film and the black layer dry film sequentially on the dielectric layer is performed when the barrier dry film and the black layer dry film are formed independently of each other, whereas the barrier dry film is formed on the dielectric layer. Laminating the black film and the dry film for black layer simultaneously laminates when the said dry film for partitions and the dry film for black layer are integrally formed.

Hereinafter, the accompanying drawings for the manufacturing method of the display panel according to an embodiment of the present invention will be described in detail.

3 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel according to the present invention.

As shown in FIG. 3, the method of manufacturing a plasma display panel according to the present invention includes an assembly process including a front panel manufacturing process, a back panel manufacturing process, and a bonding process for bonding the front panel and the back panel. do.

First, referring to the above-described front panel manufacturing process, the front panel first prepares the front glass to be a substrate (100), and forms a plurality of sustain electrode pairs on the front glass (110). Thereafter, an upper dielectric layer is formed on the sustain electrode pair 120, and a protective layer of MgO material is formed on the upper dielectric layer 130 to protect the sustain electrode pair.

In addition, referring to the manufacturing process of the rear panel, the rear panel is prepared with a rear glass, which is first described as in the front panel (200), 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. 210. Subsequently, a lower dielectric layer is formed on an upper surface of the address electrode 220, and a partition wall for partitioning the discharge cells of the plasma display panel and a black layer are formed on the lower dielectric layer 230.

Thereafter, a phosphor layer is formed in the discharge cell partitioned by the aforementioned partition wall (240). Thereafter, the front panel and the rear panel are manufactured through a process such as drying or firing.

The front panel and the rear panel manufactured as described above are bonded to each other (300) to form a plasma display panel (400).

Such a method of forming a black layer on the partition wall of the plasma display panel according to the present invention, which is formed through the manufacturing process, will be described in detail with reference to FIGS. 4 to 9.

First, Figure 4 is a manufacturing process of the rear panel using a dry film according to an embodiment of the present invention.

As shown in FIG. 4, after the address electrode 401 is formed on the rear glass 400 in step (a), the dielectric layer 402 is formed on the address electrode 401 including the rear glass 400. A barrier rib layer is formed by forming a barrier rib dry film 403 on the upper portion of the dielectric layer 402 and laminating using a lamination roll.

Thereafter, in step (b), the black film dry film 405 is placed on the barrier layer, and the black layer is formed by lamination using a lamination roll as described above.

Thereafter, in step (c), a predetermined photoresist film, for example, a dry film resin (hereinafter referred to as DFR) 410, is laminated on the black film dry film 405. It is formed through. Thereafter, the photo mask 420 is aligned on the DFR 410, and after the exposure process is performed by the photo mask 420, a developing process is performed.

The DFR 410 of the region exposed to light by the development process (hereinafter referred to as the 'exposure region') remains on the dry film 405 for the black layer, while the region not exposed to the light (hereinafter referred to as 'ratio') DFR 410 of the " exposed area " is etched and removed to form a shape as shown in FIG.

Thereafter, in step (d), the etching apparatus sprays the etching solution on the barrier dry film 403, the black layer dry film 405, and the DFR 410 which have undergone the above-described development process. In this case, the dry film 403 corresponding to the partition wall and the dry film 405 corresponding to the black layer are protected by the DFR 410 pattern, and the partition dry film 403 for which the DFR 410 pattern is not formed, and The dry film 405 for black layers is shaved by etching liquid.

Looking at the next step (e), the discharge space is formed in the space between the partition wall and the black layer by the etching process of step (d) described above.

On the other hand, the dry film for the partition (or black layer) laminated on the back glass of the plasma display panel according to the present invention forms a structure protected by the first base film and the cover film. As described above, the dry film is protected by the base film and the cover film to form a single sheet, which is called a green sheet. The manufacturing method and structure thereof are as follows in FIGS. 5A, 5B, and 6.

5A to 5B illustrate a method of manufacturing a partition (or black layer) green sheet laminated on a rear glass of the plasma display panel according to the present invention.

First, referring to FIG. 5A, a dry film for forming a partition (or a black layer) includes a slurry (501 layer) slurry (501a) formed on a conveyor belt 520 from a coater (510). It is applied to the base film 502 made of PET with a predetermined thickness.

Thereafter, as shown in FIG. 5B, the slurry 501a formed on the base film 502 passes through a drying zone to form a dry film 501, and covers the cover film 503 on the upper surface of the dry film 501. (Roll) form the final green sheet 500 is formed.

FIG. 6 is a view illustrating a structure of a partition (or black layer) green sheet laminated on a rear glass of the plasma display panel according to the present invention.                     

As shown in FIG. 6, a base film 502 is disposed below a dry film for a partition (or a black layer) according to the present invention, a dry film for a partition (or a black layer) formed on an upper portion of the base film, and a partition film (501). Or a black film) for the cover film 503 formed on the dry film.

7 is a manufacturing process of the rear panel using a dry film according to another embodiment of the present invention.

As shown in FIG. 7, after the address electrode 701 is formed on the rear glass 700 in step (a), the dielectric layer 702 is formed on the address electrode 701 including the rear glass 700. A partition wall and a black film dry film 706 formed integrally with the partition dry film 703 and the black layer dry film 705 on the dielectric layer 702 and then laminated using a lamination roll. A black layer is formed simultaneously on the layer and the partition wall.

Subsequently, in step (b), a predetermined photoresist film, for example, a dry film resin (hereinafter referred to as DFR) 710, is laminated on the black layer dry film 705 on the lamination process. It is formed through. Thereafter, the photo mask 720 is aligned on the DFR 710, and after the exposure process by the photo mask 720 is performed, a developing process is performed.

The DFR 710 of the region exposed to light by the developing process (hereinafter referred to as 'exposure region') remains on the dry film 705 for the black layer, while the region not exposed to light (hereinafter referred to as 'ratio'). DFR 710 of the “exposure area” is etched and removed to form a shape as shown in FIG.

Thereafter, in step (c), the etching apparatus sprays the etching solution on the dry film 706 and the DFR 710 for the partition / black layer which have undergone the above-described development process. At this time, the dry film 706 corresponding to the partition wall and the black layer is protected by the DFR 710 pattern, and the dry film 706 for the partition / black layer in which the DFR 710 pattern is not formed is scraped off by the etching solution ( As in step d), a discharge space is formed in the space between the partition and the black layer.

8A to 8C illustrate a method of manufacturing a green sheet for a partition / black layer laminated on a rear glass of a plasma display panel according to the present invention.

First, referring to FIG. 8A, a dry film for forming a partition layer is formed on a base film 803 made of a PET material on which a slurry slurry 801a from a coater 810 is formed on a conveyor belt 820. The slurry 801a formed on the base film 803 is applied to the film 803 at a predetermined thickness, and the partition dry film 801 is formed through the drying zone.

Subsequently, as shown in FIG. 8B, the dry film for forming the black layer on the partition wall includes a partition dry film 801 in which a slurry for the black layer (Slurry, 802a) from the coder (830) is formed in FIG. 8A. ), The slurry 802a formed on the barrier dry film 801 passes through a drying zone, and a dry film 802 for black layer is formed.

Then, as illustrated in FIG. 8C, the cover film 804 is formed on the top surface of the dry film 802 for the black layer to form a roll to form a green sheet 800 for the final partition / black layer.

FIG. 9 is a diagram illustrating a structure of the partition / black layer green sheet laminated on the rear glass of the plasma display panel according to the present invention.

As shown in FIG. 9, a base film 803 is disposed below the dry film for the partition wall / black layer, a dry film 805 for the partition wall / black layer formed on the base film, and a dry film for the partition wall / black layer according to the present invention. The cover film 804 is formed.

As such, when the rear panel is formed by using the dry film for the partition and the dry film for the black layer, the rear panel manufacturing process time may be reduced by forming the black layer on the partition and the partition wall by laminating without sandblasting.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Of course, any person skilled in the art can make various modifications, and such changes are within the scope of the claims.

According to the present invention described above, by forming a panel by laminating a dry film for the black layer on the partition wall and the partition wall on the rear glass of the plasma display panel, the manufacturing process is simplified, thereby shortening the process time.

Claims (3)

The front panel includes a plurality of sustain electrode pairs formed by pairing a scan electrode and a sustain electrode on the front glass, and a plurality of address electrodes are arranged at a predetermined interval in a direction crossing the plurality of sustain electrode pairs. In the manufacturing method of the plasma display panel bonded together Forming the rear panel is (a) forming an address electrode on the rear glass and then forming a white back on the address including the rear glass; (b) forming a barrier dry film and a black layer dry film sequentially or simultaneously on the white back; (c) exposing the pattern mask on the dry film for the black layer; And (e) etching the exposed dry film for the partition wall and the dry film for the black layer to form a partition and a black layer Method of manufacturing a plasma display panel comprising a. The method of claim 1, When sequentially laminating the barrier dry film and the black layer dry film on the white back, the barrier dry film and the black layer dry film are each independently formed dry film, the method of manufacturing a plasma display panel . The method of claim 1, When laminating the barrier dry film and the black layer dry film on the white back at the same time, the barrier film and the dry film for black layer is a manufacturing method of the plasma display panel, characterized in that the dry film formed integrally.

Images