KR19990000446A - Manufacturing Method of Color Plasma Display Panel - Google Patents

Abstract

A method of manufacturing a color plasma display panel, comprising: forming a partition wall in a predetermined pattern on the lower substrate, wherein the partition wall is formed in the method of manufacturing a color plasma display panel having an upper substrate and a lower substrate. And forming a color phosphor layer in a predetermined pattern by injecting a color phosphor between the barrier ribs and the partition wall to produce a high-resolution color plasma display panel.

Description

Manufacturing Method of Color Plasma Display Panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color plasma display panel, and more particularly, to a method of manufacturing a color plasma display panel in which a phosphor layer is formed using a spray method.

In general, a color plasma display panel drives a pixel by forming a sustain electrode and an address electrode in a matrix form between an upper substrate and a lower substrate, and generates a discharge between the electrodes to generate an image using ultraviolet rays generated therein. It is a flat panel display device to implement.

1 is a view showing a unit cell cross-sectional structure of a general color plasma display panel.

Referring to FIG. 1, a general color plasma display panel forms a pair of sustain electrodes 11 having a predetermined width and height on the same surface of the upper substrate 10, and forms a dielectric layer 12 on the sustain electrodes 11. An upper structure formed by a printing method and having a dielectric protective layer 13 formed on the dielectric layer 12 formed on the sustain electrode 11; In order to form an address electrode 15 having a predetermined width and height on the lower substrate 14, and to prevent crosstalk between adjacent cells occurring in the address electrode 15, the partition wall 16 is formed. And a lower structure in which the phosphor layer 17 is formed on the sidewall surface of the partition wall 16 and the address electrode 15.

An inert gas is enclosed between the upper structure and the lower structure to form a discharge region 18.

The operation of the color plasma display panel configured as described above is as follows.

When a driving voltage is applied to the sustain electrode 11, surface discharge occurs in the discharge region 18 on the surface of the dielectric layer 12 and the dielectric protective layer 13, thereby generating ultraviolet rays 19.

Color display is performed as the fluorescent material of the surrounding phosphor layer 17 is excited by the generated ultraviolet light 19.

That is, the main component (space charge) existing in the discharge cell is accelerated by the applied driving voltage, the inert mixed gas filled with a pressure of about 400 to 500 torr in the discharge cell, that is, helium (He) as a main component 147 nm ultraviolet rays are generated when the inert gas is excited by colliding with a phenning mixed gas containing xenon (Xe), neon (Ne) gas, and the like.

Visible light is generated when the ultraviolet rays 19 collide with the phosphor layer 17 surrounding the address electrode 15 and the partition 16.

The manufacturing method of the plasma display panel configured as described above is as follows.

First, a sustain electrode 11 as an upper electrode is formed on the upper substrate 10.

In this case, the sustain electrode 11 uses a transparent electrode (ITO (Indium-Tin Oxide)) on which indium oxide or tin oxide is deposited.

Subsequently, in order to generate wall charges to lower the driving voltage, a dielectric paste is printed on the sustain electrode 11 to form the dielectric layer 12, followed by drying and firing.

The dielectric layer 12 is a low melting glass material mainly composed of lead oxide.

Subsequently, the dielectric protection layer 13 is formed to prevent damage to the dielectric layer 12.

At this time, the dielectric protective layer 13 is formed by the electron beam deposition method using magnesium oxide.

Subsequently, the address electrode 15 is formed on the lower substrate 14.

Subsequently, when formation of the address electrode 15 is completed, the partition wall 16 is formed on the lower insulating substrate 14 by using a thick film printing method to prevent color mixing between adjacent discharge cells.

At this time, the thickness of the partition wall printed once is 13 micrometers-15 micrometers, and the thickness of all the partition walls is 130 micrometers-150 micrometers.

Next, as shown in FIG. 2, the phosphor layer 17 is deposited on the upper surface of the partition wall 16 by a method such as printing, so that the phosphor layer 17 is caused by its own weight. The wall surface of the wall is allowed to flow down and adhere to the inner wall of the partition wall 16.

When the upper and lower substrates thus formed are sealed with the sealant, a sealed space is formed.

At this time, the upper / lower structure seals the discharge gas into the space sealed by the sealant, and the panel sealed through the hole by combining a hole (not shown) and a gas injection glass tube (not shown) drilled in the lower corner portion. When evacuating the negative air and evacuating it, the degree of vacuum is usually about 10 ^-6 to 10 ^-8 torr.

The gas is injected by the gas injection device and the glass tube is sealed with heat to form a panel in which the discharge gas is completely sealed.

The color plasma display panel configured as described above does not flow down sufficiently due to surface tension or adhesion of the phosphor layer, and thus is attached only to the upper part of the partition wall.

Therefore, there is a problem of causing local luminance unevenness and abnormal light emission.

The present invention has been made to solve the problems according to the prior art, an object of the present invention by spraying the phosphor on the upper surface of the lower substrate and a plurality of partition sidewalls (spray) to form a uniform phosphor layer and high luminous luminance. The present invention provides a method of manufacturing a color plasma display panel.

1 is a view showing a unit cell cross-sectional structure of a general color plasma display panel;

2 is a view showing the structure of a color plasma display panel according to the prior art;

3A to 3E illustrate a method of manufacturing a color plasma display panel according to the present invention.

Explanation of symbols for main parts of the drawings

10: upper substrate 11: sustain electrode

12 dielectric layer 13 dielectric protective layer

14: lower substrate 15: address electrode

16 bulkhead 17 phosphor layer

18: discharge area 19: ultraviolet light

In the method of manufacturing a color plasma display panel according to the present invention, the method of manufacturing a color plasma display panel having an upper substrate and a lower substrate includes the steps of: forming a partition wall in a predetermined pattern on the lower substrate; Injecting a color phosphor between the partition walls to form a color phosphor layer in a predetermined pattern to produce a high-resolution color plasma display panel.

Hereinafter, a preferred embodiment of a method of manufacturing a color plasma display panel according to the present invention will be described.

3A to 3E illustrate a method of manufacturing a color plasma display panel according to the present invention.

Referring to FIG. 3, in the method of manufacturing a color plasma display panel according to the present invention, as shown in FIG. 3A, the partition wall 16 is first formed on the lower substrate 14 in a predetermined pattern.

Next, as shown in FIG. 3B, the first color phosphor R is injected onto the lower substrate 14 and on the side walls of the plurality of partition walls 16.

In this case, the first color phosphor layer 17 is formed on the lower substrate 14 and on the sidewalls of the plurality of partition walls 16 at a predetermined thickness.

The color phosphor is composed of 80 wt% of water, 10 wt% of phosphor, 10 wt% of polyvinyl alcohol, and the like.

Next, after exposing the 1st color fluorescent substance layer 17 of an unnecessary part, it develops as shown in FIG. 3E.

Next, as shown in FIG. 3C, the second color phosphor G is injected onto the lower substrate 14 and the sidewalls of the partition wall 16.

At this time, the second color phosphor layer 17 is formed on the lower substrate 14 and on the sidewalls of the plurality of partition walls 16 at a predetermined thickness.

Next, after exposing the 2nd color fluorescent substance layer 17 of an unnecessary part, it develops as shown in FIG. 3E.

Water and the polyvinyl alcohol component contained in the color phosphor layer are evaporated during the exposure process.

Next, as shown in FIG. 3D, the third color phosphor B is sprayed on the lower substrate 14 and the sidewalls of the partition wall 16.

At this time, the third color phosphor layer 17 is formed on the lower substrate 14 and on the sidewalls of the plurality of partition walls 16 at a predetermined thickness.

Next, after exposing the 3rd color phosphor layer 17 of the unnecessary part, it develops as shown in FIG. 3E.

As described above, according to the present invention, the adhesion of the phosphor layer is remarkably improved, so that problems such as uneven luminance and abnormal emission due to dropping of the phosphor do not occur.

Accordingly, the present invention greatly contributes to providing a color plasma display panel of high definition and high reliability.

The color plasma display panel and the manufacturing method according to the present invention have the effect of significantly increasing the adhesion of the color phosphor by spraying the color phosphor on the lower substrate and the plurality of partitions.

In addition, there is an effect that can prevent abnormal luminance and the like caused by uneven brightness or dropping of the phosphor.

Therefore, a color plasma display panel of high quality and high reliability can be manufactured.

Claims (3)

In the method of manufacturing a color plasma display panel having an upper substrate and a lower substrate, Forming a partition wall on the lower substrate in a predetermined pattern; And forming a color phosphor layer in a predetermined pattern by injecting a color phosphor between the barrier ribs and the barrier ribs. The method of claim 1, The spraying of the color phosphors sequentially produces R, G, and B color phosphors. The method of claim 1, The color phosphor is a method of manufacturing a color plasma display panel, characterized in that made of water, phosphors, photosensitizers.