KR100480752B1 - Multi-electrode plasma display device - Google Patents

Abstract

The present invention discloses a multi-electrode PDP with a novel configuration.

Multi-electrode PDP is sustained discharge by a lateral discharge between a plurality of electrodes, there is a problem that the brightness improvement is weak due to low discharge intensity due to the discharge only in the adjacent portion.

The present invention relates to a multi-electrode plasma display device configured to generate a lateral discharge between a plurality of electrodes which are covered with a dielectric layer and laterally adjacent to each other, wherein at least one of the plurality of electrodes is farther than an inner side closer to the other electrode. The conductive material is formed of a low conductivity portion and a high conductivity portion, and the low conductivity portion and the high conductivity portion are arranged in a horizontal arrangement so that the conductivity of at least one of the adjacent electrodes is increased. By giving a differential to the wall to form more wall charges on the outside induced full lateral discharge, as a result of the remarkable improvement in the discharge intensity and thereby the emission luminance was achieved.

Description

Multi-electrode Plasma Display Device

The present invention relates to a plasma display device, and more particularly to a multi-electrode plasma display device.

Plasma Display Panel (PDP), which uses gas discharge phenomena in which image discharge occurs when a potential difference is applied between two contacts spaced into the gas space, is used for image display. It is a direct current (DC) type PDP in which electrodes are arranged opposite to each other on a substrate.

However, the DC-type PDP has a problem in that the discharge start is delayed and the discharge is not maintained when not selected, so that the luminance of the light emitting device is rapidly lowered when displaying a high resolution or moving picture.

Accordingly, various types of PDPs, such as an AC method and a trigger method, which have speed and memory effects have been filed, and one of them is the multi-electrode PDP shown in FIG. .

In Fig. 1, two substrates P1 and P2 filled with a discharge gas therebetween are arranged with electrodes E1 and E2 opposed to each other, and an electrode E1 of one of the substrates, mainly the front substrate P1, is transverse. (Iii) A plurality of electrodes (S1-S3) are covered with a dielectric layer (I) to induce surface discharge by discharge.

Here, the plurality of electrodes S1-S2 may be the first to second electrodes (three-electrode PDPs) or three or more up to S3 indicated by dotted lines (four-electrode PDPs). It is called multi-electrode PDP. Since a plurality of electrodes (S1-S2) induces a surface discharge by alternately causing a sustain discharge after one of the start discharge with the electrode (E2) on the opposite side, all of them can be referred to as sustain electrodes As in other PDPs, there is no distinction between the main electrode and the auxiliary electrode.

The multi-electrode PDP basically acts as an AC type PDP using wall discharge. First, an initial discharge between one electrode, for example, a second electrode S2 and an opposite back electrode E2 is performed. (V1) causes the discharge to start, and then alternately generates sustain discharge (V2) between the other electrodes (S1 and / or S2) and the second electrode (S2) and maintains the discharge until the erase voltage is applied. The image will be implemented.

On the other hand, the start discharge V1 is a longitudinal discharge in which the two electrodes S2 and E2 face each other and face each other, while the sustain discharge V2 is not opposite but the two adjacent electrodes M, S1. And / or lateral discharge between S2), the discharge is generated only in a very limited area as shown in FIG.

That is, in FIG. 2, the two electrodes S1-S2 cause sustain discharge V2 by AC discharge through the dielectric layer I, which is alternately applied as a potential difference between the two electrodes S1-S2. The wall charges formed on the surface of the dielectric layer I are repeatedly discharged through a kind of electron avalanche phenomenon.

However, as is well known, the movement of the charge moves along the minimum path, so that the discharge between the two electrodes S1-S2, that is, the sustain discharge V2 is limited to only the adjacent portions of both electrodes S1-S2. Since the surface discharge is not practically performed, the discharge intensity of the sustain discharge V2 is not so high, and as a result, the effect of improving the luminous luminance is not so excellent despite the complicated structure and operation.

In view of such conventional problems, an object of the present invention is to provide a multi-electrode PDP with improved emission intensity by improving the discharge intensity of sustain discharge.

In order to achieve the above object, the multi-electrode PDP according to the present invention is a multi-electrode plasma display device which is transversely discharged between a plurality of electrodes which are covered with a dielectric layer and are laterally adjacent to each other, wherein at least one of the plurality of electrodes is provided. One electrode is composed of a low conductive portion and a high conductive portion so as to have a greater conductivity on the outer side than an inner side closer to the other electrode, and the low conductive portion and the high conductive portion are arranged in a horizontal arrangement.

According to this configuration, more wall charges are formed at a portion farther than the adjacent portions of the two electrodes, thereby inducing a lateral discharge over the entire surface, thereby improving discharge intensity and luminous luminance.

EXAMPLE

Such specific features and advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

3 illustrates a multi-electrode PDP in which a lateral discharge is generated between two electrodes S1-S2. Any one of the two electrodes S1-S2, preferably, a portion near both adjacent electrodes (hereinafter abbreviated as "inside") is illustrated. The conductivity of a distant site (hereinafter, abbreviated as " outer ") is greater.

Then, when a voltage is applied to both electrodes S1-S2, more current flows to the outside. Accordingly, more wall charges charged on the surface of the dielectric layer I are formed on the outside than the inside.

As a result, the lateral discharge generated between the two electrodes S1-S2, that is, the auxiliary discharge V2 is induced to occur better at the outside of the two electrodes S1-S2, so as to cover the entire area of both electrodes S1-S2. That is, the actual face discharge can occur.

As a result, the discharge intensity is improved, and thus the emission luminance of the PDP can be greatly improved.

4 to 6 illustrate specific configurations that can give a difference in conductivity of the inside and outside of the electrodes S1 and S as described above.

First, in the embodiment of Figure 4, the first electrode (S1) and the second electrode (S) is composed of a low conductive portion (L1) and a high conductive portion (L2), respectively, the low conductive portion (L1) is adjacent to the high electrical portion (L2) It is arranged horizontally far away.

Here, the low conductive portion Ll and the high conductive portion L2 may be composed of a transparent electrode: a metal electrode, and when both are made of a metal material, a relatively low conductive metal such as Ni,: Ag, Ag, or A1: Pt or Au It can be configured by a method of sequentially printing the material and the highly conductive metal material.

Meanwhile, FIG. 5 shows an embodiment in which two electrodes S2 and S3 are arranged on both sides of the first electrode S1. The electrodes S2 and S3 on both sides are the low conductive portion L1 and the high electrical portion L2. The low conductive portion L1 is arranged to face the first electrode S1.

Meanwhile, the first electrode S1 may be made of any one material of the low conductive portion L1 or the high conductive portion L2, and the low conductive portion L1 is arranged on both sides of the high conductive portion L2, if necessary. You can also take

In the above embodiment, the low conductive parts Ll and the high electric parts L2 are arranged in a horizontal row, but in the embodiment of FIG. Each electrode S1-S3 has a configuration in which the high electrical parts L2 are stacked on the low conductive parts Ll, and the high electric parts L2 of the two electrodes S2 and S3 are biased outwards and the center first The high conduction portion L2 of the electrode S1 is located at the center of the low conduction portion Ll, thereby embodying the features of the present invention described with reference to FIG.

The embodiment of FIG. 6 is particularly suitable for the configuration of the front electrode in which each of the electrodes S1-S3 is formed by laminating a transparent electrode and a metal electrode, so that the low conductive portion L1 is a transparent electrode such as ITO, and a high electrical portion L2. May be composed of a metal electrode such as Al or Ag.

As described above, according to the present invention, by using the characteristics of the multi-electrode PDP which discharges AC, the outer conductivity is increased so that more wall charges are formed on the outer side of the electrode, so that the lateral discharge is made over the entire surface of the inner and outer sides of the electrode As a result, it is possible to achieve a significant improvement in the discharge intensity and the light emission luminance.

1 is a cross-sectional view showing the basic structure and operation of a multi-electrode PDP;

2 is a cross-sectional view showing a problem of a conventional multi-electrode PDP;

3 is a cross-sectional view showing the basic principle of the present invention,

4 through 7 are cross-sectional views illustrating embodiments of implementing the present principles.

<Description of the code | symbol about the principal part of drawing>

P1, P2: Substrate

E1, E2: electrode

S1-S3: first to third electrodes

L1: low conducting portion

L2: High Conducting Part

Claims (3)

A multi-electrode plasma display device configured to generate a lateral discharge between a plurality of electrodes that are covered with a dielectric layer and are laterally adjacent to each other. At least one of the plurality of electrodes, the low conductive portion and the high conductive portion is formed so that the conductivity of the outer side far greater than the inner side closer to the other electrode, the low conductive portion and the high electrical portion is characterized in that arranged in a horizontal arrangement Multi-electrode plasma display device. The multi-electrode plasma display device according to claim 1, wherein the low conductive part comprises a transparent electrode, and the high conductive part comprises a metal electrode. The multi-electrode plasma display device of claim 1, wherein the low conductive portion is made of a relatively low conductive metal material, and the high conductive portion is made of a highly conductive metal material.

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