KR20060061156A - Method of fabricating plasma display panel - Google Patents

Abstract

The present invention is to mix the oxygen to the dielectric material applied to form the dielectric layer of the plasma display panel, the binder is completely burned during the firing of the dielectric material, thereby preventing the generation of carbon and bubbles that may remain in the dielectric layer Provided are a plasma display panel and a method of manufacturing the same, which improve light transmittance and breakdown voltage characteristics.

Description

Method of manufacturing plasma display panel {Method Of Fabricating Plasma Display Panel}             

1 is a perspective view showing a typical plasma display panel.

FIG. 2 is a cross-sectional view illustrating the plasma display panel shown in FIG. 1. FIG.

3A and 3B are views for explaining a plasma display panel according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

2X, 20X: Address electrode 4Y, 40Y: Scan / hold electrode

4Z, 40Z: common sustain electrode 6: phosphor

8: bulkhead 10, 100: protective film

12, 120: upper dielectric layer 14, 140: lower substrate

16, 160: upper substrate 18, 180: lower dielectric layer

300: oxygen particle

The present invention relates to a method of manufacturing a plasma display panel, and more particularly, to a method of manufacturing a plasma display panel which prevents generation of carbon and bubbles that may remain after forming a dielectric layer to improve light transmittance and breakdown voltage characteristics of the panel. It is about.

A plasma display panel (PDP) is a display device that uses visible light generated from a phosphor when vacuum ultraviolet rays generated by gas discharge excite the phosphor.

PDP is thinner and lighter than Cathode Ray Tube (CRT), which has been the mainstay of display means, and has the advantage of realizing high-definition large screen. The PDP is also composed of a plurality of discharge cells arranged in a matrix form.

1 is a perspective view illustrating a general plasma display panel, and FIG. 2 is a cross-sectional view illustrating the plasma display panel shown in FIG. 1.

1 and 2, a discharge cell of a conventional three-electrode AC surface discharge type PDP includes a scan / hold electrode 4Y and a common sustain electrode 4Z formed on an upper substrate 16, and a lower substrate 14. Has an address electrode 2X formed thereon. The sustain electrode pairs 4Y and 4Z are made of a transparent electrode and a bus electrode.                         

The upper dielectric layer 12 and the passivation layer 10 are stacked on the upper substrate 16 having the scan / sustain electrode 4Y and the common sustain electrode 4Z side by side. Wall charges generated during plasma discharge are accumulated in the upper dielectric layer 12.

The protective film 10 prevents damage to the upper dielectric layer 12 due to sputtering generated during plasma discharge and increases discharge efficiency of secondary electrons. As the protective film 10, magnesium oxide (MgO) is usually used.

The lower dielectric layer 18 and the partition wall 8 are formed on the lower substrate 14 on which the address electrode 2X is formed, and the phosphor layer 6 is coated on the surfaces of the lower dielectric layer 18 and the partition wall 8. The address electrode 2X is formed in the direction crossing the scan / sustain electrode 4Y and the common sustain electrode 4Z.

The partition wall 8 is formed in parallel with the address electrode 2X to prevent the ultraviolet rays and the visible light generated by the discharge from leaking to the adjacent discharge cells. The phosphor layer 6 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red (R), green (G), and blue (B). Inert gas for gas discharge is injected into the discharge space provided between the upper substrate 16 / lower substrate 14 and the partition 8.

The discharge cell of this structure is selected by the counter discharge between the address electrode 2X and the scan / hold electrode 4Y, and then the discharge cell is held by the surface discharge between the sustain electrode pairs 4Y and 4Z. In the discharge cell, the fluorescent substance 6 emits light by ultraviolet rays generated during sustain discharge, so that visible light is emitted outside the cell to display an image.

As described above, the upper dielectric layer 12 and the lower dielectric layer 18 of the plasma display panel may be a slurry or paste in which a binder, a solvent, an additive, and a glass powder are stirred. (paste) is applied to form a film and then fired and laminated.

However, in the formation of such a dielectric layer, the oxygen required to burn off the binder is thermally decomposed through the oxygen present inside the film rather than supplied from the outside of the applied film.

That is, carbon remains in the membrane because the binder is burned in the membrane that lacks oxygen necessary to remove the binder. In addition, since most of the air contained in the film applied to form the dielectric layer is a nitrogen component irrelevant to the combustion of the binder, bubbles according to the nitrogen component remain in the film even after the binder is removed.

Therefore, even after the dielectric layer is formed, a problem arises that the light transmittance and breakdown voltage characteristics of the panel are deteriorated due to the carbon and bubbles remaining in the film.

Accordingly, it is an object of the present invention to provide a method of manufacturing a plasma display panel which prevents carbon and bubbles that may remain after forming a dielectric layer, thereby improving light transmittance and breakdown voltage characteristics of the panel.

) 중 적어도 하나 이상의 물질을 혼합 교반하여 유전체 물질을 형성하는 단계와, 유전체 물질을 각 기판 상에 도포하는 단계와, 도포된 유전체 물질을 소성시켜 유전체층을 형성하는 단계를 포함한다.
In order to achieve the above object, a method of manufacturing a plasma display panel according to an aspect of the present invention includes: a discharge space is formed between an upper substrate and a lower substrate, and includes a dielectric layer that accumulates wall charges during discharge, and a binder. And solvents, additives, glass powders, oxygen particles (

Mixing at least one or more of the materials) to form a dielectric material, applying the dielectric material onto each substrate, and firing the applied dielectric material to form a dielectric layer.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, with reference to the accompanying Figure 3, a preferred embodiment of the present invention will be described in detail.

In the following detailed description of the present invention, a case of forming a dielectric layer on an upper substrate and a lower substrate will be described. However, it can be understood that the same applies to other dielectric materials stacked on the plasma display panel.

3A and 3B illustrate a plasma display panel according to a preferred embodiment of the present invention.

3A illustrates the lower dielectric layer 180 stacked on the lower substrate 140 of the plasma display panel, and FIG. 3B illustrates the upper dielectric layer 120 stacked on the upper substrate 160.                     

)(300)이 혼합되어 있는 유전체 페이스트(paste) 또는 슬러리(slurry)를 도포한 이후에 소성하여 상부 유전체층(120)을 적층한다.First, the upper substrate 160 will be described. The scan / sustain electrode 40Y and the common sustain electrode 40Z are formed side by side on the upper substrate 160, and a dielectric material and a thin film are formed on the electrodes 40Y and 40Z. Oxygen particles (

The upper dielectric layer 120 is laminated by firing after applying a dielectric paste or slurry in which the 300 is mixed.

In addition, a protective film is laminated on the upper dielectric layer 120 with magnesium oxide (MgO) to prevent damage to the upper dielectric layer 120 due to sputtering generated during plasma discharge and to increase discharge efficiency of secondary electrons.

)(300)이 혼합되어 있는 유전체 페이스트 또는 슬러리를 도포한 이후에 소성하여 하부 유전체층(180)을 형성한다. Meanwhile, referring to FIG. 3B, after forming the address electrode 20X on the lower substrate 140, the dielectric material and oxygen particles (

) 300 is coated and then baked to form a lower dielectric layer 180.

After the formation of a partition (not shown) on the lower dielectric layer 180, a phosphor layer is coated on the surface of the partition. The address electrode 20X is formed in the direction crossing the scan / sustain electrode 40Y and the common sustain electrode 40Z.

)(300)를 소정 비율로 혼합하여 교반한다.The dielectric paste or slurry applied to form the upper dielectric layer 120 on the upper substrate 160 and the lower dielectric layer 180 on the lower substrate is a binder, a solvent, and an additive. (addition), glass powder, oxygen particles (

) 300 is mixed and stirred at a predetermined ratio.

Oxygen particle 300 is applied to the substrate (140, 160) after the application of the dielectric paste or slurry by completely burning out the binder during the firing process, thereby preventing carbon and bubbles remaining in the dielectric layer (120, 180) do.

That is, oxygen particles are mixed and stirred in the dielectric paste or slurry so that the binder included in the dielectric paste or slurry forming the dielectric layers 120 and 180 is completely burned in the firing process.

Meanwhile, a method of forming a dielectric layer of a plasma display panel according to the present invention will be described.

)(300)을 혼합 교반하여 유전체 물질을 만든다.A binder, a solvent, an additive, a glass powder, and oxygen particles may be applied to the upper substrate 160 and the lower substrate 140 to form the dielectric layers 120 and 180.

300 is mixed and stirred to form a dielectric material.

In addition, a dielectric material is coated on the substrates 140 and 160, and a binder included in the dielectric material is removed through a firing process. That is, the oxygen particles 300 included in the dielectric material completely remove the binder by combustion.

As described above, the plasma display panel and the method of manufacturing the same according to the present invention, by mixing the oxygen particles for the complete combustion of the binder with the dielectric material to be applied to form the dielectric layer of the plasma display panel, and carbon that can remain in the dielectric layer and There is an effect of preventing bubbles to improve the light transmittance and pressure resistance characteristics of the panel.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (2)

In the manufacturing method of the plasma display panel having a discharge space is formed between the upper substrate and the lower substrate, and having a dielectric layer that accumulates wall charges during discharge, Binders, solvents, additives, glass powders, oxygen particles (

Mixing and stirring at least one of the materials to form a dielectric material; Applying the dielectric material onto each of the substrates; Baking the applied dielectric material to form the dielectric layer. The method of claim 1, The oxygen particles, And promoting the binder to be completely burned during the firing process.

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