KR20060065142A - 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 at the rear glass at a predetermined interval, and forming the rear panel comprises the steps of forming an address electrode on the rear glass, and forming a white back on the address including the rear glass. And forming a phosphor layer by laminating dry films for R, G, and B phosphors on the white back, respectively, and dry films for R, G, and B phosphors between the dry films for R, G, and B phosphors. Any one of the dry film for the partition wall thickness of the same or thicker than the dry film for R, G, B phosphors Forming a partition by laminating and forming grooves for securing a discharge space in each of the dry films for R, G, and B phosphors.

Plasma Display Panel, Phosphor, Bulkhead, 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 to 2D are views illustrating a barrier rib manufacturing 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,

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

6A and 6B illustrate a manufacturing method of a green sheet for R, G, and B phosphors (or barrier ribs) laminated on a rear glass of a plasma display panel according to the present invention;

7 is a structural diagram of a green sheet for R, G, B phosphors (or partition walls) 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.

Such a plasma display panel uses a micro discharge and generates visible light in a cell where a discharge occurs. If a neighboring cell cannot be separated, a cell that should not be turned on or a cell that does not turn on due to a discharge phenomenon spread out. It may appear to be on.

In order to prevent such a phenomenon, a plasma display panel has a barrier rib that divides a cell and a cell.

There are various methods of manufacturing such a partition wall, and the sandblast method, which is representatively well known, is as follows with reference to FIGS. 2A to 2D.

2A to 2D illustrate a process of fabricating a partition wall by using a sandblasting method of a plasma display panel according to the related art.

First, referring to FIG. 2A, a dielectric 41 is formed on a lower substrate 40 on which an address electrode (not shown) is mounted, and a partition paste 31 having a predetermined thickness is formed on the dielectric 41. Is formed. At this time, the partition paste 31 is formed by any one of a printing method and a coating method using a black material in order to reduce the reflectance caused by external light. Thereafter, a dry film resin (hereinafter referred to as DFR) 42 is formed on the partition paste, and a photo mask 43 is aligned on the DFR to irradiate light.

Referring to FIG. 2B, after the DFR 42 exposure process, a development process is performed. The DFR 42 of the region (hereinafter referred to as the 'unexposed region') that is not exposed to light by this developing process remains on the partition paste 31, while the region exposed to the light (hereinafter referred to as 'exposure region'). DFR 42 is etched away.

Referring to FIG. 2C, the sand blasting device 44 is positioned and driven on the partition paste 31 and the DFR 42 which have undergone the above-described development process to inject sand particles into the partition paste. At this time, the partition paste 31 is scraped due to the sputtering of the sand particles, while the paste 31 corresponding to the partition is protected by the DFR 42 pattern.

Referring to FIG. 2D, when the partition wall 31 protected and formed by the DFR 42 appears after the sand blasting process, the partition wall 31 is subjected to a peeling process to peel the DFR 42. Subsequently, the partition paste 31 is baked. As a result, the partition is completed, and a discharge space is formed concave between the partitions.

Subsequently, R, G, and B phosphors are respectively applied to discharge spaces formed concave between partitions of the plasma display panel fabricated through the above process to form a phosphor layer (not shown).

Such a process method of the rear substrate can be formed on a large-area substrate, it is possible to high-definition, but there is a disadvantage in that the cost of equipment investment is large and the process is complicated.

Accordingly, the present invention is to solve the above-mentioned conventional problems, an object of the present invention is to provide a method for manufacturing a plasma panel that can simplify the manufacturing process of the lower panel, and at the same time reduce the material cost.

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 manufacturing process of the rear panel includes forming an address electrode on the rear glass, and including a rear glass and white on the address. Forming a bag, forming a phosphor layer by laminating dry films for R, G, and B phosphors on top of the white bag, and forming the R, G, and B films between the dry films for R, G, and B phosphors. Bulkheads with the same thickness as the dry film for B phosphors or thicker than the dry films for R, G, and B phosphors By laminating any of the films comprises the step and the R, G, forming a groove to secure the discharge space in each of the dry film for the B phosphor to form a partition wall.

At this time, when the dry film for the R, G, B phosphor and the dry film for the partition wall are the same thickness, the dry film for the R, G, B phosphor and the dry film for the partition wall are formed at the same time on the white back, The grooves formed in each of the dry films for R, G, and B phosphors are formed by laser beam irradiation.

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 view sequentially illustrating a method of manufacturing a plasma display panel according to the present invention.

As shown in FIG. 3, the manufacturing method of the plasma display panel according to the present invention includes an assembly process including a front panel manufacturing process listed on the right side of FIG. 3, a rear panel manufacturing process listed on the left side, and a sealing process listed below. This includes.

First, the manufacturing process of the front panel listed on the right side of FIG. 3 is as follows.

The front panel first prepares a front glass as a substrate (100), and then a plurality of sustain electrode pairs are formed on the front glass (110). Then, an upper dielectric layer is formed on the sustain electrode pair 120, and a protective layer made of Mgo for protecting the sustain electrode pair is formed 130 on the upper dielectric layer.

Next, the rear panel manufacturing process listed on the left side of FIG. 3 will be described.

Like the front panel, the rear panel prepares the rear glass, which is the base material (200), and a plurality of address electrodes are formed on the rear glass so as to face each other by crossing the sustain electrode pair formed on the front panel (210). Then, a lower dielectric layer is formed on the upper surface of the address electrode (220), and a fluorescent layer is formed on the upper surface of the lower dielectric layer (230).

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

In the plasma display panel according to the present invention formed through such a manufacturing process, the manufacturing process of the rear panel will be described in more detail with reference to FIGS. 4 to 5 below.

First, Figure 4 is a process chart showing a method for forming a back panel using a dry film according to an embodiment of the present invention.

As shown in FIG. 4, after the address electrode 410 is formed on the rear glass 400 in step (a), the address electrode 410 is included on the address electrode 410 including the rear glass 400 in step (b). White bag 420 is formed.

Subsequently, in step (c), the dry film 440 for R, G, and B phosphors is placed on the white bag 420 at a predetermined interval, and laminated using a lamination roll to form a phosphor layer. The partition wall is laminated between the G and B phosphor dry films 440 by laminating the partition dry film 430 having the same thickness as that of the R, G and B phosphor dry film 440 through the same method as described above. Form.

Here, the partition dry film 430 having the same thickness as that of the dry film 440 for the R, G, and B phosphors is formed on the white bag 420 at the same time to be laminated or laminated at the same time, or respectively.

On the other hand, the dry film for the phosphor (or barrier rib) laminated on the back glass of the plasma display panel according to the present invention forms a structure protected by the base film and the cover film. As described above, the dry film is protected by the base film and the cover film to form one sheet, which is referred to as a green sheet. The manufacturing method and structure thereof will be described with reference to FIGS. 6A, 6B, and 7 below.

6A and 6B illustrate a method of manufacturing green sheets for R, G, and B phosphors (or barrier ribs) laminated on a rear glass of a plasma display panel according to the present invention.

First, referring to FIG. 6A, a dry film for forming a phosphor layer (or a partition wall) may include slurry (Rlurry, 601a) for R, G, and B phosphors (or partition wall) coming from a coater (610). 620 is applied to a predetermined thickness on the base film 602 made of a PET material.

Thereafter, as shown in FIG. 6B, the slurry 601a formed on the base film 602 passes through the drying zone to form a dry film 601, and covers the cover film 603 on the upper surface of the dry film 601. (Roll) form the final green sheet 600 is formed.

FIG. 7 is a view illustrating a structure of a phosphor (or barrier rib) green sheet laminated on a rear glass of the plasma display panel of the present invention described above.

As shown in FIG. 7, the dry film 601 for R, G, and B phosphors (or barrier ribs) according to the present invention, the base film 602 below the dry film, and the phosphors (or barrier ribs) formed above the base film. And a cover film 603 formed on the dry film for phosphors (or partition walls).

Subsequently, in step (d) of FIG. 4, a laser beam is irradiated to each of the dry films 440 for R, G, and B phosphors on which the green sheets for phosphors formed by the method as shown in FIGS. 6A to 6B are laminated to secure a discharge space. Form a groove for the rear panel to complete.

5 is a process chart showing a method of forming a back panel using a dry film according to another embodiment of the present invention.

As shown in FIG. 5, after the address electrode 510 is formed on the rear glass 500 in step (a '), the address electrode 510 including the rear glass 500 in step (b'). The white bag 520 is formed on the upper portion thereof.

Next, in step (c '), the dry film 530 for R, G, and B phosphors is placed on the white bag 520 at a predetermined interval to be laminated using a lamination roll to form a phosphor layer. In the step (d '), the barrier dry film 540 thicker than the thickness of the dry film 530 for the R, G, and B phosphors may be formed between the dry films 530 for the R, G, and B phosphors. Laminating as in the method to form a partition wall to complete the manufacturing process of the back panel.

As such, when the rear panel is formed using the dry film for the partition and the dry film for the phosphor, the rear panel manufacturing process time may be reduced by forming the partition and the phosphor 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 as described above, by forming a panel by laminating the partition and the dry film for phosphor on the back glass of the plasma display panel, the manufacturing process is simplified, thereby reducing the manufacturing cost significantly.

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 back glass; (b) forming a white back on the address including the back glass; (c) forming a phosphor layer by laminating dry films for R, G, and B phosphors on the white bag, respectively; (d) Between the dry films for R, G, and B phosphors, any one of the dry film for partition walls having the same thickness as that of the dry films for the R, G, and B phosphors or thicker than the dry films for the R, G and B phosphors. Laminating one to form a partition wall; And (e) forming grooves for securing a discharge space in each of the dry films for R, G, and B phosphors; Method of manufacturing a plasma display panel comprising a. The method of claim 1, When the dry film for R, G, B phosphor and the dry film for the partition are the same thickness, the dry film for the R, G, B phosphor and the dry film for the partition are simultaneously formed on the white back and laminated. A method of manufacturing a plasma display panel. The method of claim 1, If the dry film for the R, G, B phosphor and the dry film for the partition wall have the same thickness, the grooves formed in each of the dry film for the R, G, B phosphor are formed by laser beam irradiation. Method of manufacturing the panel.

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