KR20000044624A - Method for manufacturing large scale plasma display panel - Google Patents

Abstract

PURPOSE: A method for manufacturing a large scale PDP(Plasma Display Panel) is provided to minimize distortion of a glass substrate according to a firing process performed after forming various patterns of a PDP. CONSTITUTION: A method for manufacturing a large scale PDP comprises the following steps. Predetermined patterns is formed on a multitude of glass substrate(31,32), respectively. A firing process for the predetermined patterns is performed. The multitude of glass substrate is adhered to one substrate. The adhered glass substrate comprises a front face and a rear face. The predetermined patterns are formed with barrier ribs(3). The method comprises the steps of the cutting end portions of the barrier ribs and polishing the cut faces after performing the firing process.

Description

Manufacturing method of large area plasma display panel

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

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. However, there are still problems such as low brightness and contrast ratio, high driving voltage, low power consumption efficiency, and low manufacturing yield due to the difficulty in manufacturing process technology due to large size. I have a problem to do. In addition, PDPs can be oversized, full color, and have a wide viewing angle, such as liquid crystal displays (LCDs), field emission displays (FEDs), and electroluminescence displays (ELDs). As it has many unique advantages, it is considered as the next generation high-definition wall-mounted TV, a large display device for multimedia that combines the functions of a TV and a PC. The stage is reaching.

1 is a cross-sectional view illustrating a structure of a general AC PDP, and a transparent electrode 12 and a bus electrode 13 for discharging are formed on a glass substrate 10, and a transparent dielectric material 14 is provided. And a dielectric protective film 11 covering the above structure, and a back plate having an address electrode 15, a white dielectric 19, and a partition wall 16 formed on the glass substrate 17. It is. In addition, a phosphor 18 having a display color is formed between the partition walls 16, and a mixed gas of Ne / Xe (1 to 4%) is 300 to 400 torr in the discharge space formed between the partition walls 16 and the front plate. The phosphors R, G, and B 18 formed on the wall surface of the partition wall 16 emit light by ultraviolet rays generated by plasma discharge to display colors.

In order to manufacture a PDP having such a structure, a plurality of firing processes are performed. In this case, alignment of the lower layer and the upper layer is very difficult due to thermal deformation of the glass substrates 10 and 17, which makes it difficult to obtain high quality display quality. There was a problem.

This problem is a factor in lowering yield and consequently lowering price competitiveness when manufacturing large-area PDP using a large-area glass substrate.

An object of the present invention is to provide a plasma display panel manufacturing method capable of minimizing deformation of a glass substrate according to a firing process performed after forming various patterns of PDP.

1 is a cross-sectional view showing the configuration of a typical AC PDP.

Figure 2a and Figure 2b is an illustration of the compartment of the glass substrate during the production of PDP according to the present invention.

Figure 3 is a cross-sectional view and a plan view showing the bonding process of the PDP manufacturing process according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

31, 32: glass substrate

33: bulkhead

The present invention is a technique of dividing the back plate and / or front plate of the PDP into several zones, individually patterning and firing the small glass substrate, and then attaching them to each other to produce one large back plate and / or front plate. . This method is not difficult because PDPs have a straight pattern.

In accordance with another aspect of the present invention, there is provided a method of manufacturing a plasma display panel, comprising: a first step of forming a predetermined pattern on each of a plurality of glass substrates; A second step of performing a baking process of the predetermined pattern; And a third step of adhering the plurality of glass substrates into one.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 2A, 2B, and 3.

First, in this embodiment, two glass substrates 21, 22 are used as shown in FIG. 2A, four glass substrates 23, 24, 25, and 26 are used as shown in FIG. Use a substrate. At this time, the total area of the glass substrate is the same as the display area of the desired PDP. That is, the desired display area is divided into several sections and the process is performed on each glass substrate.

Referring to FIG. 3, an address electrode (not shown) and a white dielectric (not shown) are formed on each of the glass substrates 31 and 32 divided into several sections as described above. At this time, the firing step is performed.

Subsequently, the partition 33 is formed and subjected to a firing process. Then, the end portions of the partition to be bonded are precisely cut and polished, and then the glass substrates 31 and 32 are bonded to each other. At this time, if a diamond knife is cut and the surface is changed or laser cut is used, the cut surface (adhesive surface) will not appear on the screen.

Subsequently, although not shown, a phosphor is applied between the partition walls 33 to complete the back plate manufacturing process.

Another embodiment of the present invention relates to a case of manufacturing a front plate of a PDP, and forms a transparent electrode (ITO), a bus electrode, a transparent dielectric, and a dielectric protective film on several small glass substrates, and then bonds each glass substrate to one. This can be done with a sealant. The adhesive surface uses a cross section in which the transparent electrode and the bus electrode are not cut.

By performing the process on a small glass substrate through such a process it is possible to facilitate the alignment between the lower layer and the upper layer by greatly reducing the thermal deformation of the glass substrate compared to when using a large area glass substrate.

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 in which the end of the partition is cut and polished and then bonded is described as an example. However, the present invention is applicable to the case where the other part is cut and bonded. Precise patterning to the end ensures immediate adhesion without cutting and polishing.

The present invention has the effect of facilitating the alignment between the front and back processes by reducing the thermal deformation of the glass substrate according to the firing process, thereby ensuring an even discharge characteristics as a whole screen and the effect of securing the price competitiveness by improving the yield There is. In addition, if the present invention is applied, since it is hardly restricted by the size of the glass substrate, a large area PDP of 70 inches or more can be easily manufactured.

Claims (5)

In the plasma display panel manufacturing method, Forming a predetermined pattern on each of the plurality of glass substrates; A second step of performing a baking process of the predetermined pattern; And A third step of adhering the plurality of glass substrates into one; Plasma display panel manufacturing method comprising a. The method of claim 1, In the third step, Plasma display panel manufacturing method characterized in that the glass substrate bonded to form a front plate. The method of claim 1, In the third step, Plasma display panel manufacturing method characterized in that the glass substrate bonded to form a back plate. The method of claim 3, wherein And the predetermined pattern is a partition wall. The method of claim 4, wherein After performing the second step, A fourth step of cutting an end portion of the partition wall; And a fifth step of polishing the cut surface.