KR20010004158A - Method for forming electrode in plasma display panel - Google Patents

Abstract

PURPOSE: A method for forming electrode of PDP(Plasma Display Panel) is provided to realize the high resoultion and scale-up, to cut down the production cost and to be easy the correction of electrode pattern. CONSTITUTION: A method for forming electrode of PDP(Plasma Display Panel) comprises the steps; laminating a DFR(dry film resist)(11) on a glass substrate(10) for a rear surface plate; patterning it by exposing and developing in the electrode type; spreading an Ag paste(13) for electrode on the top of whole construction in order to fill the DFR(11); leveling and drying the spreaded Ag paste(13); grinding the paste(13) for electrode by a grinder and exposing the DFR(11); removing the exposed DFR(11) and forming an address electrode(13); and plastizing the address electrode(13) remaining on the glass substrate(10).

Description

Method for forming electrode in plasma display panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP) manufacturing technology, and more particularly to a method of forming an electrode of a plasma display panel.

PDP is a device that displays characters or images by using light emitted from plasma generated during gas discharge, and is also called a gas discharge display device. PDP is largely exposed to direct plasma because the electrode used to apply external voltage to form plasma is directly exposed because the direct current (DC) type and conduction current flowing through the electrode are covered with dielectric. Therefore, it is classified into AC type through which displacement current flows. In addition, according to the electrode structure of the discharge cell, it is classified into a counter discharge type, a surface discharge type, a barrier discharge type, and the like. In the case of directly using the visible light emitted from the discharge gas, it is mostly used in a monochromatic display PDP device. There is a PDP using orange color, and when full color display is required, ultraviolet light emitted from discharge gas such as Kr or Xe excites red (R), green (G) and blue (B) phosphors. Visible light is used. Among various flat panel displays, PDP is attracting attention as a display device that can realize a large screen, but it is still produced due to low brightness and contrast ratio, high driving voltage, low power consumption efficiency, and difficult manufacturing process technology due to large size. There is a problem that the yield is low, there is a problem that the low price should be made in addition to the improvement of the above characteristics.

In the case of the three-electrode surface discharge type AC PDP, which is currently mainstream, a transparent electrode, a bus electrode, a transparent dielectric, a dielectric protective film, and a black stripe are formed on the front plate, and an address electrode, a white dielectric, and a partition wall are formed on the back plate. Etc. are formed. Phosphors for realizing color in the PDP are formed on the front plate in the case of a transmissive type and on the back plate in the case of a reflective type.

Currently, as a method generally used for forming electrodes in a PDP manufacturing process, there are a printing method, a photo method using a photosensitive material, a sputtering method, and the like. Printing method is advantageous in terms of production cost due to simple production equipment and high efficiency of use of materials, but it has limitations in terms of high definition and large size. Photo method and sputtering method can make thin film and high definition but high production cost. Have. In addition, the above methods have a disadvantage in that repair is difficult when problems such as an open or short of an electrode occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of forming an electrode of a plasma display panel, which can be made high-definition and large in size, has low production cost, and is easy to modify an electrode pattern.

1 to 5 are diagrams illustrating an address electrode forming process of a PDP according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: glass substrate 11: DFR (dry film resist)

12: spray nozzle 13: Ag paste

14 polishing machine 15 alkaline solution

The present invention lowers the production cost by enabling the use of low-cost Ag paste used in a conventional printing method using a dry film resist (DFR) patterning method, and the electrode through the injection / drying / polishing of the Ag paste When a pattern abnormality (disruption, short circuit) occurs, it is possible to easily correct during the process.

According to an aspect of the present invention, there is provided a method of forming an electrode of a plasma display panel, the method including: laminating a dry film resist in which an electrode pattern is engraved on a predetermined lower layer; A second step of applying an electrode paste so that the dry film resist is embedded on the entire structure after the first step; A third step of polishing the electrode paste to expose the dry film resist; A fourth step of removing the exposed dry film resist; And a fifth step of baking the electrode paste remaining on the lower layer.

Hereinafter, preferred embodiments of the present invention will be introduced in order to enable those skilled in the art to more easily carry out the present invention.

1 to 5 illustrate an address electrode forming process of a PDP according to an embodiment of the present invention, which will be described below with reference to the drawings.

In the PDP electrode forming process according to the present embodiment, first, as shown in FIG. 1, the DFR (dry film resist) 11 is laminated on the glass substrate 10 for the back plate, and the exposure and development processes are performed. It is patterned in the form of an electrode through. At this time, the area where the electrode is to be formed is engraved.

Next, as shown in FIG. 2, an Ag paste, which is an address electrode material, is applied over the entire structure on which the patterned DFR 11 is formed. At this time, a spray nozzle 12 is used to apply the Ag paste, and the paste is sprayed at room temperature.

Then, the Ag paste 13 applied as shown in FIG. 3 is leveled and dried.

Next, as illustrated in FIG. 4, the applied Ag paste 13 is polished using the polishing machine 14. At this time, the polishing of the Ag paste 13 is generally performed to the extent that the DFR 11 is exposed. However, in order to match the desired height of the Ag paste 13, that is, the electrode height, the DFR 11 is exposed even after the exposure of the DFR 11. ) And Ag paste 13 can be polished.

Subsequently, as shown in FIG. 5, the remaining DFR 11 is removed using the alkaline solution 15 to form the address electrode 13.

Thereafter, the address electrode 13 is fired.

Since the address electrode 13 formed through the above process is formed through the patterning of the DFR 11, it is easy to achieve high definition, and a low-cost Ag paste is used instead of the expensive photosensitive paste, thereby reducing material costs. . In addition, it is possible to ensure the thickness uniformity of the electrode through the polishing process, and before the removal of the DFR (11), the electrode pattern can be inspected in advance, so that when a pattern abnormality such as disconnection or short circuit occurs, it can be immediately modified in a dried state.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

For example, in the above-described embodiment, the case of forming the address electrode has been described as an example, but the present invention can be applied when all the electrodes of the PDP are formed.

In addition, in the above-described embodiment, the case where Ag paste is used as the electrode material has been described as an example, but the present invention can be applied to the case where a conductive paste other than Ag paste is used as the electrode material.

The present invention enables high definition of PDP by using DFR patterning, and it is possible to use low-cost Ag paste, thereby reducing the production cost. In addition, the present invention can improve the uniformity of the electrode thickness through a polishing process, and can be expected to improve the yield because it is easy to modify the electrode pattern dried on the DFR in advance to check the abnormality of the electrode.

Claims (5)

Laminating a dry film resist in which an electrode pattern is engraved on a predetermined lower layer; A second step of applying an electrode paste so that the dry film resist is embedded on the entire structure after the first step; A third step of polishing the electrode paste to expose the dry film resist; A fourth step of removing the exposed dry film resist; And A fifth step of baking the electrode paste remaining on the lower layer Electrode forming method of a plasma display panel comprising a. The method of claim 1, The electrode paste, A method of forming an electrode of a plasma display panel, characterized in that the Ag paste. The method of claim 2, In the second step, The electrode forming method of the plasma display panel characterized by applying the electrode paste using a nozzle spray method. The method of claim 3, The second step, Electrode formation method of a plasma display panel, characterized in that carried out at room temperature. The method according to any one of claims 1 to 4, After performing the second step, A sixth step of leveling the electrode paste; And forming a seventh step of drying the electrode paste.