KR19990078890A - Double-Electrode-Layer Plasma Display Panel - Google Patents

Abstract

The present invention is an electrode structure provided on a front glass plate in a plasma display flat panel (PDP) device of a TV, a monitor, and various display devices. In the conventional coplanar electrode AC type PD, the discharge sustaining electrode is applied on the plane of the front glass plate, and the signal electrode and the partition wall are installed on the back plate. The present invention is to improve the discharge holding electrode of the plate in the existing AC-PDP structure of the double layer discharge holding electrode. That is, the method of applying the transparent electrode and the bus electrode for connecting the power to the glass plate and applying the dielectric layer thereon is the same as the electrode structure of the conventional coplanar AC-PDP front plate. In the present invention, an electrode of opaque material is additionally installed on the dielectric layer of the front plate at a height of several tens of microns outside the unit discharge pixel, and the dielectric layer is coated on the electrode surface. As a result, the dielectric layer on the conventional transparent electrode surface becomes a bottom surface and forms a box-shaped space composed of partition electrodes on the outer side of the dielectric layer. The electrodes separated into two layers run one at the edge of the entire panel so that the same voltage is supplied. The present invention is designed for the effect of maintaining the discharge between the transparent electrode planes with the appropriate electrode spacing, and ensuring the maximum discharge space and confining the plasma by means of box-shaped wall electrodes of a considerable height on the top of the dielectric layer. Therefore, by improving the existing simple coplanar electrode structure, it is easy to generate plasma as a three-dimensional discharge sustaining electrode structure, and there is a large amount of plasma and little plasma loss to the outside, thereby increasing discharge efficiency.

Description

Double electrode layer plasma display panel {Double-Electrode-Layer Plasma Display Panel}

The present invention is an electrode structure provided on a front glass plate of a plasma display device and a so-called PDP panel for use in TVs, monitors and various flat panel display devices. In the conventional coplanar AC PDP panel electrode, the transparent electrode 2 is applied to the upper glass surface 1 as shown in FIG. 1, and the bus electrode 3 for power connection is applied on the plane. In the present invention, the transparent electrode 2 is applied to the bottom surface of the unit discharge pixel, and the electrodes are separated and applied to the top and bottom of the dielectric layer to install the partition electrodes 6 and 7 outside the discharge surface on the dielectric layer. It is designed to apply the same voltage by connecting two electrode layers (4). The partition electrode on the dielectric layer is applied to have a suitable height. The dielectric is applied along the partition electrode so that the height of the partition electrode is kept constant from the bottom surface. At this time, only the portion of the red electrode electrode is applied to the dielectric layer, and the bottom surface is careful not to apply to the dielectric layer. The partition electrodes are installed in the horizontal and vertical directions as shown in the figure so that the unit discharge space is divided by installing them outside the unit discharge space. The partition electrode in the horizontal direction is at a position coincident with the partition wall of the lower plate. Therefore, the gap 8 between both discharge holding partition electrodes in the horizontal direction is filled with a dielectric between both gaps. If necessary, either the horizontal bulkhead electrode or the vertical bulkhead electrode may be omitted to simplify the process. In addition, even when the shape of the edge between both electrodes of the transparent electrode is deformed, it is possible to form a double electrode layer in the same manner.

In general, the discharge voltage is lower the larger the surface of the discharge electrode. Therefore, in the conventional PDP, the electrode of opaque material is applied to the upper plate in two layers to maximize the electrode surface to lower the discharge voltage and increase the amount of plasma generated. Such an electrode structure aims at forming a stable space discharge plasma because the plasma formation space is large and the energy loss of the plasma is reduced. Since the individual pixels are formed by the partition electrode, the unit pixels are prevented from interacting with neighboring pixels, thereby minimizing the distance between the neighboring discharge pixels, thereby making the pixel size smaller than that of the conventional PDP.

The present invention is a plasma display panel for the purpose of increasing light emission luminance and efficiency of a conventional PDP. The characteristic of the electrode structure of the panel in this invention is to convert the structure of the conventional coplanar discharge into the form of space discharge. Thus, the plasma generating space is designed to be large and stable. Therefore, it is the second generation PDP that can secure the maximum discharge space.

Conventional plasma flat panel display devices have a very low brightness and efficiency, have high power consumption, and have a considerable limitation on their practical use as TVs and various display devices. In the PDP structure designed for the conventional TV, it is limited by the expansion of the discharge sustain electrode surface installed on the front glass plate. In the present invention, however, the electrode surface is provided in a double structure to expand the entire electrode area and at the same time convert the conventional two-dimensional planar electrode structure into a three-dimensional electrode structure to convert the conventional surface discharge into a space discharge. The space utilization of the discharge was maximized.

The electrode structure of the present invention is possible by the existing electrode manufacturing technology, there is no problem in the separate manufacturing process associated with this.

1 is a perspective view of a double electrode layer electrode structure additionally installed on a discharge electrode holding coplanar electrode structure of a conventional coplanar AC-PDP top plate. The discharge sustaining electrode installed on the glass surface of the existing coplanar AC-PDP is composed of a transparent electrode and a power connection electrode (bus electrode), and a dielectric layer is applied thereon. The electrode is applied around the unit discharge space on the dielectric layer, and the electrode portion is locally coated with a dielectric to be an AC type discharge. Electrodes applied above and below the dielectric layer are connected at the edge of the panel to connect to the same power source. Therefore, a transparent electrode is coated on the bottom surface of the unit discharge pixel under the dielectric layer, and electrodes are installed in the form of a partition wall around the discharge space to form a box-shaped space.

[Description of symbols on the main parts of the drawings]

One; Top glass, 2; Transparent electrode 3; A power supply bus electrode; Electrode connections 5; Dielectric layer, 6; Vertical bulkhead electrodes 7; Transverse bulkhead electrodes; Interelectrode space

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In the present invention, since the unit discharge pixels form an independent space, there is no problem of cross talk with neighboring pixels generated in the conventional coplanar PDP. Therefore, since the distance between electrodes of neighboring pixels can be minimized, a high quality PDP with a minimum size of a unit pixel composed of RGB three primary colors is possible.

Claims (1)

In the conventional coplanar AC type PDP, a double layer electrode structure designed to supply the same voltage by installing a separate partition electrode on the outer side of the discharge surface in addition to the electrode structure of the top plate and connecting discharge sustaining electrodes separated by a dielectric layer to each other at the edge of the panel. .