KR19990011618A - Bulkhead Structure of Plasma Display Panel - Google Patents

Abstract

The present invention relates to a barrier rib structure of a plasma display panel (PDP), and in particular, the side surface of the barrier rib has a certain inclination, thereby providing a stable structure of the barrier rib that increases luminance due to reflection of light at the side portion and facilitates application of the phosphor. The purpose is to.

In order to realize this, in the present invention, a parallel upper substrate and a lower substrate are joined by frit glass, a dielectric layer is formed on a sustain electrode of the upper substrate, a protective layer is formed on the dielectric layer, and a lower electrode is formed on the lower substrate. And a partition wall formed between the lower electrodes, and a fluorescent surface is coated between the inner walls of the partition wall, wherein the partition wall has a trapezoidal shape in which a lower end portion has a width greater than an upper end portion width a. The slope of both sides of θ is for the height (χ) and top width (a) of the bulkhead. It is configured to satisfy.

Description

Bulkhead Structure of Plasma Display Panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP), and more particularly, to a partition structure forming a discharge space between upper and lower substrates.

The general color PDP is composed of an upper structure and a lower structure, as shown in FIG. 1. The upper structure includes an upper substrate 1, a sustain electrode 3 formed on the upper substrate 1, and the sustain electrode. (3) A dielectric layer 5 and a protective layer 6 for retaining surface charges generated at the time of discharge, the lower structure of which is the lower substrate 2 and the lower electrode formed on the lower substrate 2; Comprising (4), the partition 7 is formed between the upper substrate 1 and the lower substrate 2, the phosphor (8) is coated on the surface to form a discharge space.

A cell is formed at a point where the sustain electrode 3 and the lower electrode 4 cross each other, and these cells gather to form a plasma display panel PDP.

Referring to the conventional PDP forming process, first, a pattern is formed of a transparent electrode, and then a metal material having a lower resistance than that of the transparent electrode is coated on the side end of the transparent electrode so that the line resistance between the ends of the electrode is dropped to display the driving voltage. A structure that prevents deterioration of quality is currently typical, and another method is to form an electrode using only an opaque metal electrode without using a transparent electrode. A dielectric layer 5 is formed on the entire surface to limit the discharge current on the electrodes, and a protective layer 6 is formed on the entire surface to protect the dielectric layer 5 from sputtering generated during discharge. The protective layer 6 generally uses magnesium oxide.

In the lower substrate 2, one electrode 4 arranged perpendicular to the pair of electrodes is formed, and a partition wall 7 is formed between the electrodes to prevent mis-discharge of adjacent discharge regions due to discharge. A partition wall 7 is formed between the electrodes to prevent mis-discharge of adjacent discharge regions by the electrodes, and the upper and lower substrates 1 and 2 are integrated using fritgrass (not shown), and then discharge gas is collected inside. And fully sealed.

In particular, in the method of forming the partition wall 7, a method of forming a partition wall by multilayer printing by using a screen mask is mainly used. The partition wall structure as shown in FIG. 2 is mainly formed, and the height of the partition wall 7 is approximately. It becomes 100-150 micrometers.

To do this, 10 times of continuous stacking is required for printing. When printing bulkheads, the minimum thickness of the bulkhead width is about 50 ~ 60㎛. Since the thickness is not the discharge space, the smaller the width of the partition wall, the larger the discharge space can be and the brightness of the product can be improved.

However, in the conventional bulkhead structure of FIG. 2, the bottom end is perpendicular to each other in the case of (a) of FIG. 2, and thus the barrier rib is not filled well when the phosphor is applied. there was.

The present invention was invented to solve the problems of the prior art as described above, the partition wall has a trapezoidal shape having a lower width of the upper portion than the upper width (a), the slope of the side portion of the partition (θ) is the height of the partition (χ ) And top width (a) It is an object to provide a partition structure that is structurally stable by forming so as to be.

1 is a cross-sectional structure of the electrode unit.

Figure 2 (a) (b) is also an embodiment of a conventional partition structure.

3 is a structural block diagram of the present invention.

* Explanation of symbols for the main parts of the drawings

102: lower substrate, 104: lower electrode, 107: partition wall

The present invention will be described in detail below with reference to the accompanying drawings.

First, as shown in FIG. 3, the partition wall 107 formed on the lower substrate 102 has a trapezoidal shape, and the inclination of both sides of the partition wall 107 is θ, and the height of the partition wall is χ, When the upper end width is a, the inclination θ of the partition wall is configured to satisfy the following equation (1).

[Equation 1]

In the drawing, reference numeral 104 denotes a lower electrode.

The partition wall shape of the present invention having such a structure will be described below through examples.

When the upper end width of the partition wall is 80 占 퐉 and the lower end width is 120 占 퐉, the height becomes about 130 占 퐉 and the partition side surface has a constant inclination θ. When the phosphor is applied to the inclined structure of the partition wall, the light reflected on the partition wall surface during discharge is reflected back to the front of the panel through the opening between the partition wall and the partition wall, thereby increasing the luminance. When it has a value, the best luminous luminance can be obtained, and the stability of the partition wall can be expanded.

In addition, it is easy to print the mold cavity during the printing process of the phosphor, it is possible to secure a wide discharge space.

As described above, the barrier rib structure of the present invention provides a structurally stable barrier rib to facilitate the coating process of the phosphor, and has an effect of increasing the screen brightness.

Claims (2)

Parallel upper and lower substrates are joined by frit glass, a dielectric layer is formed on the sustain electrode of the upper substrate, a protective layer is formed on the dielectric layer, and an address electrode is arranged on the lower substrate, and the address electrode A partition wall is formed therebetween, and a phosphor is present in the color plasma display panel between the inner walls of the partition wall. The partition wall has a trapezoidal shape in which the width of the lower end is larger than the upper end width (a), The inclination θ of both sides of the partition wall is about the height of the partition wall and the upper width of the partition wall. PDP bulkhead structure, characterized in that configured to satisfy. The method of claim 1, The inclination θ of the partition wall is The barrier rib structure of the PDP.