KR19990001519A - 4-electrode structure of AC plasma display panel - Google Patents

Abstract

The present invention is to provide a four-electrode structure of an alternating current plasma display panel which is designed to improve high brightness and brightness uniformity by performing uniform bi-discharge on the full screen when a bi-discharge driving pulse is applied by newly improving the electrode structure.

To this end, the present invention, the address electrode provided in parallel between the partition wall of the rear substrate, a plurality of sub-electrodes having a center electrode installed on the front substrate orthogonal to the address electrode, and a predetermined distance on the left and right sides of the center electrode By providing a plurality of sustain electrodes provided on the front substrate so as to be orthogonal to the address electrodes, not only the brightness and contrast are greatly improved, but also the power consumption reduction effect is obtained. In addition, the application value of the present invention is very high when the high-definition technology of the panel is improved.

Description

4-electrode structure of AC plasma display panel

The present invention relates to a four-electrode structure of an alternating current plasma display panel, and more particularly, to a four-electrode structure of an alternating current plasma display panel in which an electrode structure is improved in order to improve high brightness and uniformity of luminance by receiving a bi-discharge driving pulse. It is about.

In general, a plasma display panel (PDP) is a device that displays characters or graphics using light emitted from a plasma generated during gas discharge. The electrode structure of the plasma display panel is classified into a direct current type and an alternating current type. In addition, the DC type and the AC type may have a combined type.

The difference between the direct current type and the alternating current type is classified as whether the electrode is directly exposed to the plasma, or whether the electrode is not directly exposed to the plasma by applying a dielectric on the electrode. This difference is caused by the difference between the discharge properties and phenomena and the external driving waveform in the DC type and AC type.

Three electrodes are mainly used as the electrodes of the AC plasma display panel. When the three-electrode structure is compared with the two-electrode structure, an address electrode is introduced to improve the address speed by separating the selective discharge and the sustain discharge. The difference can be mentioned.

On the other hand, in recent years, a four-electrode structure employing an alternating discharge driving method has been proposed to realize a higher luminance improvement than the three-electrode structure.

In addition, in recent years, the bi-discharge driving method is adopted in the four-electrode structure without using the alternating discharge driving method as a method of improving the luminance, and this bi-discharge driving method generates an error between electrodes by the conventional four-electrode structure. This causes a problem that bi-discharge (simultaneous discharge) is not performed in a specific cell and a certain cell section.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and by alternating the electrode structure, an alternating-type plasma is designed to achieve high luminance and uniformity by performing uniform bi-discharge on the full screen when applying a bi-discharge driving pulse. The purpose is to provide a four-electrode structure of the display panel.

According to a preferred embodiment of the present invention to achieve the above object, a center electrode provided on the front substrate orthogonal to the address electrode having a plurality of sub-electrodes, the address electrode provided in parallel between the partition wall of the rear substrate, and A four-electrode structure of an AC plasma display panel having a plurality of sustain electrodes provided on the front substrate at right angles to the address electrode at a predetermined distance from the left and right of the center electrode is provided.

1 is a perspective view showing a four-electrode structure of an AC plasma display panel according to an embodiment of the present invention;

2 is a schematic diagram illustrating a four-electrode structure of an AC plasma display panel according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: back board 2: front board

Rib: partition wall addr: address electrode

Y: center electrode S1, S2: sustain electrode

Ys1, Ys2: Sub electrode

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the four-electrode structure of the AC plasma display panel according to the embodiment of the present invention, as shown in FIGS. 1 and 2, an address electrode addr is disposed between the ribs that are disposed on the rear substrate 1 side by side. The barrier rib Rib is provided in parallel with each other, and the center electrode Y is provided on the front substrate 1 with a plurality of sub-electrodes Ys1 and Ys2 so as to be perpendicular to the address electrode addr (that is, the It is installed to be orthogonal to the back substrate (1), the plurality of sustain electrodes (S1, S2) are orthogonal to the address electrode (addr) at a predetermined distance to the left and right sides of the center electrode (Y) (that is, the back substrate Orthogonal to (1) is provided on the front substrate (2).

Here, the center electrode Y having the plurality of sub-electrodes Ys1 and Ys2 is shaped like a horseshoe when viewed as a whole. One side of the horseshoe is the sub-electrode Ys1 and the other side. The part becomes the sub-electrode Ys2.

In the embodiment of the present invention, the distance between the sub-electrodes Ys1 and the sub-electrodes Ys2 has a minimum gap such that the electrodes do not short each other.

According to the exemplary embodiment of the present invention configured as described above, since the center electrode Y is composed of two sub-electrodes Ys1 and Ys2, the driving pulse is applied to the two sub-electrodes Ys1 and Ys2. When the discharge is performed between the electrode Ys1 and the sustain electrode S1, the discharge may be simultaneously performed between the sub-electrode Ys2 and the sustain electrode S2.

According to the present invention as described above, by improving the four-electrode structure to enable bi-discharge driving, not only can the luminance and contrast be significantly improved, but also the power consumption reduction effect can be obtained. In addition, the application value of the present invention is very high when the high-definition technology of the panel is improved.

The present invention described above is not limited to the above-described embodiments, but can be modified and modified within the scope not departing from the gist of the present invention.

Claims (3)

An address electrode provided in equilibrium between the partition walls of the back substrate, A center electrode provided on the front substrate and having a plurality of sub-electrodes orthogonal to the address electrode; And a plurality of sustain electrodes provided on the front substrate at a predetermined distance to the left and right sides of the center electrode at right angles to the address electrode. The four-electrode structure of an AC plasma display panel according to claim 1, wherein the center electrode has a horseshoe shape. The four-electrode structure of an AC plasma display panel according to claim 2, wherein the distance between the sub-electrode on one side of the center electrode and the sub-electrode on the other side has a minimum cap such that the mutual electrodes are not shorted.