KR100490530B1 - Plasma display pannel - Google Patents

Abstract

According to the present invention, there is provided a front glass substrate and a rear glass substrate facing each other; An electrode formed to be perpendicular to an inner surface of the front glass substrate and the back glass substrate; A dielectric layer and a protective layer formed on an electrode formed on the front glass substrate; A dielectric layer formed on an electrode formed on said back glass substrate; A partition wall forming a cell space coated with a phosphor on the dielectric layer of the rear glass substrate, wherein the electrodes formed on the inner surface of the front glass substrate are arranged in parallel with each other; The first electrode is configured to cause an address discharge with an electrode formed on the rear substrate, and the second and third electrodes are arranged to cause first and second sustain discharges with the first electrode. A plasma display panel is provided.

Description

Plasma display panel {Plasma display pannel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which an electrode on a top plate is a combination of metal electrodes.

In general, a plasma display device is used to display an image by using a gas discharge phenomenon, and discharge is generated in a gas between the electrodes by a direct current or an alternating voltage applied to the electrode, and the phosphor is emitted by the radiation of ultraviolet rays. The light is excited by excitation.

FIG. 1 is a schematic exploded perspective view of a panel of a typical AC plasma display device, and FIG. 2 is a schematic cross-sectional view of the front substrate 11 of FIG. 1.

Referring to the drawings, a first electrode 13a having alternating transparent scanning electrodes 23X and a common electrode 23Y (see FIG. 2) is formed on the inner surface of the front glass substrate 11, and the rear glass substrate is formed. On the inner surface of 12, a second electrode 13b which is an address electrode is formed. The first electrode 13a and the second electrode 13b are each formed in a strip shape, and cross each other at right angles when the substrates 11 and 12 are assembled to each other. On the inner surface of the front glass substrate 11, a dielectric layer 14 and a protective layer 15 are sequentially stacked on top of the electrodes. On the other hand, a dielectric layer 14 'is laminated on the electrodes on the rear glass substrate 12, and the partition 17 is formed thereon. The cell 19 is formed by the partition wall 17. The cell 19 is filled with an inert gas such as argon. In addition, the phosphor 18 is applied to a predetermined portion inside the partition wall 17 forming each cell 19. Designated by reference numeral 13c is a bus electrode, which is a surface of the first electrode 13a for the purpose of preventing a phenomenon in which the line resistance of the first electrode 13a increases when a voltage is applied to the first electrode 13a. To form. Since the bus electrode 13c is formed on the first electrode 13a, a uniform voltage may be applied to the first electrode 13a regardless of the length.

Referring to the operation of the plasma display device having the above configuration, a trigger voltage having a high voltage may be first generated to cause a discharge between the scanning electrode 23X of the first electrode 13a and the address electrode of the second electrode 13b. (trigger voltage) is applied. Discharge occurs when cations are stored in the dielectric layer 14 by the trigger voltage. When the trigger voltage exceeds the threshold voltage, the argon gas or the like charged in the cell 19 becomes a plasma state by discharge, and the scanning electrode 23X and the common electrode 23Y of the first electrode 13 are discharged. ) Can maintain a stable discharge state (see FIG. 2). In this sustain discharge state, the light in the ultraviolet region collides with the phosphor 18 in the discharge light and emits light, so that each pixel formed for each cell 19 can display an image.

In the above light emission of the plasma display panel, the plasma light emission includes neon (Ne) light emission. Such neon light emission is accompanied by red light emission, and the red light emission of the neon light causes a decrease in the color purity of the entire image. In particular, a phenomenon in which neon light emission is mainly generated on the surface of the first electrode 13a which is a transparent electrode can be observed. That is, as the width of the first electrode 13a is wider, the neon light emission increases, thereby increasing the red light emission area, thereby causing a decrease in color purity of the entire display image.

The present invention has been made to solve the above problems, it is an object of the present invention to provide a plasma display panel with improved color purity by reducing the neon light emitted through the transparent electrode.

Another object of the present invention is to provide a plasma display panel capable of improving luminous efficiency by reducing power consumption.

Another object of the present invention is to provide a plasma display panel in which manufacturing cost can be reduced by excluding a transparent electrode and employing a metal electrode as a display electrode.

In order to achieve the above object, according to the present invention, there is provided a front glass substrate and a rear glass substrate facing each other; An electrode formed to be perpendicular to an inner surface of the front glass substrate and the back glass substrate; A dielectric layer and a protective layer formed on an electrode formed on the front glass substrate; A dielectric layer formed on an electrode formed on said back glass substrate; A partition wall forming a cell space coated with a phosphor on the dielectric layer of the rear glass substrate, wherein the electrodes formed on the inner surface of the front glass substrate are arranged in parallel with each other; The first electrode is configured to cause an address discharge with an electrode formed on the rear substrate, and the second and third electrodes are arranged to cause first and second sustain discharges with the first electrode. A plasma display panel is provided.

According to another feature of the invention, the first to third electrodes are sequentially arranged so that the second electrode is formed relatively close to the first electrode while the third electrode is formed relatively spaced apart The third electrode and the first electrode adjacent to each other correspond to a non-light emitting area.

According to another feature of the invention, the second electrode and the third electrode are formed on both sides of the first electrode, respectively, the second electrode is formed relatively close to the first electrode while the first The three electrodes are formed relatively apart from each other, and the third and second electrodes adjacent to each other correspond to a non-light emitting region.

According to another feature of the invention, the second electrode and the third electrode are formed on both sides of the first electrode, respectively, the distance from the second electrode and the third electrode to the first electrode is the same, The third and second electrodes adjacent to each other correspond to a non-light emitting region, and a distance from each of the second electrode and the third electrode to the first electrode is smaller than the distance of the non-light emitting region.

According to another feature of the invention, the first to third electrodes are formed with a width of 40 to 100 micrometers.

According to another feature of the invention, the first to third electrodes are formed of a copper or silver material.

Hereinafter, the present invention will be described in more detail with reference to an embodiment shown in the accompanying drawings.

3 is a schematic exploded perspective view of a plasma display panel according to the present invention.

Referring to the drawings, the overall structure of the plasma display panel according to the present invention is similar to that shown in Fig. 1, and the same reference numerals are given to the same members. That is, the front glass substrate 11 and the back glass substrate 12 are provided, the first to third electrodes 33X, 33Ya, 33Yb are formed on the inner surface of the front glass substrate 11, and the back glass substrate ( On the inner surface of 12, a fourth electrode 34 which is an address electrode is formed. On the inner surface of the front glass substrate 11, a dielectric layer 14 and a protective layer 15 are sequentially stacked on top of the electrodes. On the other hand, a dielectric layer 14 'is laminated on the electrodes on the rear glass substrate 12, and the partition 17 is formed thereon. The cell 19 is formed by the partition wall 17. The cell 19 is filled with an inert gas such as argon. In addition, the phosphor 18 is applied to a predetermined portion inside the partition wall 17 forming each cell 19.

According to a feature of the invention, the first to third electrodes formed on the inner surface of the front glass substrate 11 are formed of a conductive metal electrode. These metal electrodes are labeled 33X, 33Ya, 33Yb in FIG. 2, and they are formed with a predetermined arrangement relationship with respect to each other. The first to third electrodes 33X, 33Ya and 33Yb are formed to be orthogonal to the fourth electrode 34 when the substrates 11 and 12 are assembled. In the embodiment shown in FIG. 3, the first to third electrodes 33X, 33Ya, 33Yb are formed in turn.

4 is a cross-sectional view of the embodiment shown in FIG. 3 viewed in the direction of arrow Q of FIG. 3.

Referring to the drawings, the first electrode 33X and the second electrode 33Ya are formed relatively close to each other, and the third electrode 33Yb is formed relatively spaced apart from the second electrode 33Ya. A non-light emitting region is formed between the third electrode 33Yb and the first electrode 33X adjacent thereto. Preferably, the first to third electrodes 33X, 33Ya, 33Yb are about 40 to 100 micrometers wide, and more preferably 50 to 80 micrometers wide. The widths of the first to third electrodes are such that they cannot be recognized by the human eye at the time of emitting light of the phosphor, and thus, the brightness of the panel is not significantly impaired. The distance between the first electrode 33X, the second electrode 33Ya, and the third electrode 33Yb can be applied to any distance as long as the distance at which sustain discharge can occur. For example, the distance between the electrodes is preferably 50 to 100 micrometers.

In the plasma display panel having the above configuration, the address discharge is generated between the fourth electrode 34 and the first electrode 33X formed on the rear substrate 12 (Fig. 3). Next, the sustain discharge is divided into the primary sustain discharge and the secondary sustain discharge. More specifically, the primary sustain discharge occurs between the first electrode 33X and the second electrode 33Ya. Again, the secondary sustain discharge is generated between the first electrode 33X and the third electrode 33Yb. The third electrode 33Yb is a secondary discharge caused by the discharge between the first electrode 33X and the second electrode 33Ya although it is far from the first electrode 33X. In the discharge between the above electrodes, the width of the first to third electrodes 33X, 33Ya, 33Yb is narrow so that even if neon light is emitted from the surface, such light emission will not be large enough to inhibit the color purity. Color purity can be improved.

5 is a cross-sectional view of a second embodiment of a plasma display panel according to the present invention.

Referring to the drawing, the first to third electrodes 43X, 43Ya, 43Yb are formed on the inner surface of the front glass substrate 11 as narrow metal electrodes, and the second electrode 43Ya and the third electrode 43Yb are formed. ) Are formed on both sides of the first electrode 43X. The widths of the first to third electrodes may be formed as described in the first embodiment above. It can be seen that the second electrode 43Ya is formed closer to the first electrode 43X than the third electrode 43Yb. The adjacent second electrode 43Ya and the third electrode 43Yb correspond to a non-light emitting area. The configuration of the back glass substrate is the same as that shown in FIG.

In the plasma display having the above configuration, the address discharge is generated between the fourth electrode 34 and the first electrode 43X formed on the rear substrate 12 (Fig. 3). Next, the sustain discharge is divided into the primary sustain discharge and the secondary sustain discharge. More specifically, the primary sustain discharge occurs between the first electrode 43X and the second electrode 43Ya. Again, the secondary sustain discharge is generated between the first electrode 43X and the third electrode 43Yb. The third electrode 43Yb is a secondary discharge caused by the discharge between the first electrode 43X and the second electrode 43Ya although it is far from the first electrode 33X.

6 is a schematic cross-sectional view of a third embodiment of the plasma display panel according to the present invention.

Referring to the drawings, the first to third electrodes 63X, 63Ya, 63Yb are formed on the inner surface of the front glass substrate 11 as narrow metal electrodes, and the second electrode 63Ya and the third electrode 63Yb are formed. ) Are formed on both sides of the first electrode 63X. The widths of the first to third electrodes may be formed as described in the first embodiment above. It can be seen that the second electrode 63Ya and the third electrode 43Yb are formed at the same distance with respect to the first electrode 63X. In the drawing, the distance between the second electrode 63Ya and the third electrode 63Yb with respect to the first electrode 63X is indicated by a, and the distance between the adjacent third electrode 63Yb and the second electrode 63Ya is represented by b. Is indicated. Here formed as a <b, the distance denoted by b corresponds to the non-luminescing region.

In the plasma display having the above configuration, the address discharge is generated between the fourth electrode 34 and the first electrode 63X formed on the rear substrate 12 (Fig. 3). Next, the sustain discharge is divided into the primary sustain discharge and the secondary sustain discharge. More specifically, the primary sustain discharge occurs between the first electrode 63X and the second electrode 63Ya. Again, the secondary sustain discharge occurs between the first electrode 63X and the third electrode 63Yb. Here, since the second electrode 63Ya and the third electrode 63Yb maintain the same distance with respect to the first electrode 63X, the primary sustain discharge and the secondary sustain discharge may occur at the same time.

On the other hand, in the above first to third embodiments, any metal electrode can be used as long as it is a conductive material such as copper and silver.

In the plasma display panel according to the present invention, since the electrode formed on the front substrate is a metallic material and is formed relatively narrow in width, neon light emission in plasma light emission can be reduced. Therefore, the color purity of the display image is improved. In addition, since an increase in power consumption due to electrical resistance in the transparent electrode is prevented, power loss is reduced, thereby improving luminous efficiency. Moreover, manufacturing costs are saved because no expensive transparent electrodes are required.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Could be. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a schematic exploded perspective view of a typical plasma display panel.

2 is a schematic cross-sectional view of the front substrate structure of FIG.

3 is a schematic exploded perspective view of a first embodiment of a plasma display panel according to the present invention;

4 is a schematic cross-sectional view of the front substrate structure of FIG.

5 is a schematic exploded perspective view of a second embodiment of a plasma display panel according to the present invention;

6 is a schematic exploded perspective view of a third embodiment of a plasma display panel according to the present invention;

<Brief Description of Major Codes in Drawings>

11.12 Substrates 13a and 13b Electrodes

14. Dielectric layer 15 protective layer

17. Bulkhead 18. Phosphor

33X, 33Ya, 33Yb. Metal electrode

Claims (6)

delete A front glass substrate and a back glass substrate facing each other; An electrode formed to be perpendicular to an inner surface of the front glass substrate and the back glass substrate; A dielectric layer and a protective layer formed on an electrode formed on the front glass substrate; A dielectric layer formed on an electrode formed on said back glass substrate; And a partition wall forming a cell space coated with a phosphor on the dielectric layer of the rear glass substrate. The electrodes formed on the inner surface of the front glass substrate are composed of first to third metal electrodes arranged in parallel with each other, and the first electrodes cause address discharge with the electrodes formed on the back substrate, The second and third electrodes are arranged to cause the first and second sustain discharges with the first electrode, and the first to third electrodes are sequentially disposed so that the second electrode is with respect to the first electrode. Wherein the third electrode is formed relatively close to each other, and the relatively spaced apart, the plasma display panel, characterized in that between the adjacent third electrode and the first electrode corresponds to the non-emitting area. A front glass substrate and a back glass substrate facing each other; An electrode formed to be perpendicular to an inner surface of the front glass substrate and the back glass substrate; A dielectric layer and a protective layer formed on an electrode formed on the front glass substrate; A dielectric layer formed on an electrode formed on said back glass substrate; And a partition wall forming a cell space coated with a phosphor on the dielectric layer of the rear glass substrate. The electrodes formed on the inner surface of the front glass substrate are composed of first to third metal electrodes arranged in parallel with each other, and the first electrodes cause an address discharge with the electrodes formed on the back substrate, and the second and third The third electrode is arranged to cause a first and second sustain discharge with the first electrode, The second electrode and the third electrode are formed on both sides of the first electrode, and the second electrode is formed relatively close to the first electrode, while the third electrode is formed relatively apart And the third and second electrodes adjacent to each other correspond to a non-light emitting region. delete The plasma display panel of claim 2 or 3, wherein the first to third electrodes are formed to have a width of about 40 to about 100 micrometers. The plasma display panel of claim 2 or 3, wherein the first to third electrodes are formed of a copper or silver material.