KR20000030747A - Rail-Type Electrode Plasma Display Panel - Google Patents

Abstract

PURPOSE: A Plasma Display Panel(PDP) used for a display device is provided to have an effect of facing discharge between electrodes for realizing high brightness and efficiency. CONSTITUTION: A separating wall(2) of lattice shape is sprayed on an upper plate glass(1) for a glass surface(3) without the separating wall emitting the light by a fluorescent substance. And the crosswise separating wall contacts with a separating wall(7) on a lower plate for forming a space separated by the separating walls. Herein, the width of the crosswise separating walls is smaller than the width of the separating walls on the lower plate for the upper separating walls not to escape from the lower separating walls. Electrodes are sprayed on the lengthwise separating wall for securing a vertical electrode surface(5) protruded from the glass surface while having an effect of facing discharge between electrodes on the lengthwise surface. Moreover, signal electrodes(8) are formed on a lower glass plate(6) to form lattice shape with the electrodes on the upper plate. Also, the separating wall is formed on the signal electrodes for spraying fluorescent substance on the inner surface of the separating wall.

Description

Rail-type Electrode Plasma Display Panel

The present invention is a plasma display panel (PDP: Plasma Display Panel) used in TVs and various display devices, and has been designed for the purpose of an electrode structure having the effect of counter discharge between electrodes in order to realize high brightness, high efficiency and high resolution.

In the present invention, a flat panel TV using PDP has been developed and commercialized in Korea and abroad. However, these have adopted discharge between coplanar electrodes when the discharge holding electrode is on a plane. Therefore, there is a disadvantage that the discharge efficiency and brightness are low and the power consumption is large. Also, in order to avoid unwanted discharges due to mutual interference between neighboring discharge pixels, so-called dead zones are wide because a considerable distance between neighboring pixels must be secured. In addition, the use of a transparent electrode is inevitable in order to increase the aperture ratio while making the surface of the electrode as wide as possible. Therefore, the efficiency and brightness is low, there is a problem such as heat generation, it is difficult to spread the PDP to the home TV, etc. in earnest. That is, the conventional first generation coplanar discharge type AC-PDP is not suitable as an electrode structure of the next generation PDP.

The present invention adopts the conventional structure as the lower plate in the existing PDP. The upper plate is provided with a lattice-shaped partition wall and the electrode is applied to the partition wall surface. In particular, an electrode is applied to the side surfaces of the partition walls so as to have the effect of counter discharge between these partition electrodes. Therefore, the manufacturing process does not require any technology other than applying the conventional lower wall partitioning process to the upper plate. The production process and the screen construction technique can be applied mutatis mutandis.

FIG. 1 is a separated perspective view of an upper plate and a lower plate of a double-wire rail-type electrode plasma display panel, and shows only the unit pixels of three primary colors.

FIG. 2 is a cross-sectional view of the upper plate of the double-rail rail plasma display panel of FIG. 1 in the form of a lattice-shaped partition wall a and two pairs of electrodes b.

Fig. 3 is a separate perspective view (a) of an upper plate and a lower plate of a single-rail-rail electrode plasma display panel having high resolution and an electrode cross-sectional view of the upper plate as unit pixels for three primary colors.

Reference numerals of the main parts of the drawings are as follows.

One ; Top glass, 2; Upper bulkhead, 3; Glass surface, 4; Barrier electrode 5; Partition wall electrodes; Bottom glass, 7; Lower plate bulkhead, 8: signal electrode, 9; Dielectric layer.

The present invention is an electrode structure of a so-called AC PDP as a flat panel display using plasma discharge. In the conventional AC-PDP, two electrodes for discharge holding provided on the front glass plate are on the same plane to make plasma by coplanar discharge between the two electrodes. The present invention is designed to facilitate the opposite discharge between the electrode surface by producing a discharge sustaining electrode of the upper plate by improving the conventional PDP electrode structure using the plasma discharge.

1 is a perspective view of the structure of the upper plate and the lower plate of the rail-type electrode PDP of the present invention. In order to realize the full color, the shape of the electrode for the unit pixel composed of three primary colors of red, green, and blue is shown. The top plate structure applies a lattice-shaped partition wall 2 to the top plate glass 1. Light by phosphor emission is emitted through the glass surface 3 on which the partition wall is not applied. The partition wall in the transverse direction makes contact with the partition wall 7 of the lower plate to create a space separated by the partition wall. At this time, the width of the partition wall in the horizontal direction of the upper plate is installed to be narrower than the width of the partition wall of the lower plate so that the upper plate partition wall does not deviate from the partition wall 7 of the lower plate when assembled with the lower plate. The electrodes 4 and 5 are coated on the vertical partition walls, and the partition walls at both ends where the electrodes are not applied are used to reduce the discharge effect between neighboring pixels by dividing the area of the discharge space. It is a feature of the present invention that the electrode is applied to the entire vertical partition surface to secure the vertical electrode surface 5 protruding from the glass surface 3 and to have the effect of counter discharge between the vertical electrode. These electrodes are then coated with a dielectric layer for AC discharge and a protective film (primarily using MgO) is applied to the entire top plate. The structure of the lower plate allows the signal electrode 8 on the lower plate 6 to intersect the direction of the bus electrode of the upper plate so that the electrodes of the upper plate and the lower plate form a lattice shape. A partition 7 is formed on the signal electrode, and a phosphor is coated on the inner surface of the partition. In order to realize a full color image, three partition walls form one unit pixel by applying phosphors emitting red, green, and blue light. This lower plate structure is the same as that of the conventional coplanar AC-PDP. That is, the signal electrode is coated on the glass plate, and the partitions in the horizontal direction are coated as shown in FIG.

The present invention has a structural feature of the partition of the top plate and the electrode. The opening ratio is increased by making the width of the longitudinal partitions of the top plate as narrow as possible. The height of the partition wall is sufficiently secured to facilitate the counter discharge between the coated electrodes. The height of the partition, the width and the spacing of the electrodes are determined in consideration of the ease of high-pressure discharge, the aperture ratio of light transmission, and the optimum efficiency. FIG. 1 is a diagram based on a pitch of about 1 mm in which three primary colors of red, green, and blue are unit pixels of a conventional PDP. When the width of the partition electrode 4 is 60 µm or less, which is easy by a printing method, and the gap between the electrodes is 160 µm or more, four electrodes can be coated as shown in FIG. Of the four partition electrodes, two electrodes Y in the center are used as scan electrodes and connected to one power supply at the outside of the panel to perform initial write discharge with the signal electrode 8 on the lower plate. Both electrodes X on both sides are also connected to one power source at the outside of the panel to maintain the discharge between the two electrodes in the center. In order to minimize mutual discharge with neighboring unit pixels on the top plate and to minimize the boundary area of the neighboring side, partition walls were also installed at the boundary of the neighbor. The shape of such an electrode is with a double-line railroad. The electrode is a rail and the horizontal bulkhead is shaped like a sleeper that supports the rail. The shape of the bottom plate in the present invention is the same as the conventional PDP. The driving method is also the same. However, in the case of the address discharge between the signal electrode on the lower plate and the Y-electrode, which is the two electrodes in the center of the upper plate, the discharge occurs near the center of the unit pixel, so the interaction with neighboring pixels is relatively less than that of the conventional coplanar electrode. It has the advantage of being.

FIG. 2 is a cross-sectional view of the upper plate structure of FIG. As shown in FIG. 1, a unit pixel of three primary colors is illustrated. 2- (a) is sectional drawing of the grid | lattice-type partition structure 2 provided in the upper plate glass surface 1. As shown in FIG. 2- (b) shows diagonally the electrodes (X, Y) applied after the partition wall process of (a). An electrode 4 on the partition wall surface and an electrode surface 5 perpendicular to the glass surface on the side surface of the partition wall are provided. 2- (c) is a sectional view perpendicular to the top plate. After the electrode is applied, all electrode surfaces are coated with the dielectric layer 9 for alternating current discharge, and a protective film MgO is applied to the entire panel surface. The discharge is maintained between two electrodes Y in the center and two electrodes X at both ends.

3 is a PDP having a pair of partition wall electrodes for high resolution. In the case of FIG. 1, when the size of the unit pixel is 1 mm, two pairs of discharge sustaining electrodes are installed in the unit pixel in consideration of the width and the interval of the electrode. However, in the case of a PDP having a unit resolution of 1 mm or less, a pair of discharge holding partition electrodes X and Y are provided as shown in FIG. Figure 3 (a) is an exploded perspective view of the upper plate and the lower plate as shown in Figure 1, (b) is a vertical cross-sectional view of the upper electrode to maintain the discharge between the two electrodes (X, Y).

High efficiency, high brightness and high definition plasma flat panel display has the effect of practical use in TV and various flat panel display industries.

Claims (2)

A grid-shaped partition wall is installed on the front glass plate of the AC-PDP, and the horizontal partition wall is placed on the upper surface of the partition wall of the lower panel for the purpose of separating space between neighboring discharge pixels as shown in FIGS. 1-3. AC-PDP is designed to maintain the discharge in the entire electrode surface by applying an electrode to a plurality of partition surface to have the effect of the opposite discharge between the protruding electrode surface. The grid-shaped bulkhead structure according to Figs. 1 to 3 of claim 1 installed on the upper plate glass of the AC-PDP, and the horizontal bulkheads are placed on the bottom bulkhead for the purpose of space separation between neighboring pixels. The barrier ribs at both ends are intended for discharge pixels separated from neighboring pixels in the horizontal direction, and the grid-shaped barrier rib structure and electrode structure of the upper plate having the purpose of applying an electrode for sustaining discharge to one or more pairs of vertical barrier ribs. .