KR100722264B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel, comprising: a back substrate having a partition wall defining a plurality of address electrodes and discharge cells; A first protrusion facing the rear substrate and including a front substrate on which a plurality of scan electrodes and a sustain electrode are formed so as to cross the address electrode and electrically connected to the scan electrodes; A second protrusion spaced apart from the first protrusion; A scan auxiliary electrode including a first connector electrically connecting the first and second protrusions; And a third protrusion electrically connected to the sustain electrode; A fourth protrusion spaced apart from the third protrusion; A sustain auxiliary electrode including a second connection part electrically connecting the third and fourth protrusions, wherein a first discharge space is formed between the first protrusion of the scan auxiliary electrode and the fourth protrusion of the sustain auxiliary electrode, and By forming a second discharge space between the second protrusion of the auxiliary electrode and the third protrusion of the sustain auxiliary electrode, the initial discharge voltage of the plasma display panel is lowered, and the time jitter characteristic of electrons emitted during plasma discharge is lowered. At the same time, the discharge is smoothly spread from the discharge region, thereby increasing the discharge efficiency.

Plasma Display Panel, Transparent Electrode, Scan Electrode, Sustain Electrode

Description

Plasma Display Panel

1 is a perspective view showing the configuration of a plasma display panel according to the present invention;

2 is an exemplary view showing an embodiment of a plasma display panel according to the present invention;

3 is a plan view showing an embodiment of a plasma display panel according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: front substrate 11: scanning electrode

11a: scan auxiliary electrode 12: sustain electrode

12a: sustain auxiliary electrode 12a1: third protrusion

13: first dielectric layer 14: dielectric protective layer

20: back substrate 21: address electrode

22: second dielectric layer 23: partition wall

24: phosphor V: discharge cell

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel. In particular, a scan auxiliary electrode and a sustain in which a first partition wall and a second partition wall partitioning a discharge cell are formed, and protrusions are formed in the discharge cell from the first partition wall and the second partition wall. An auxiliary electrode is formed, and the protrusion of the formed scan auxiliary electrode and the protrusion of the sustain auxiliary electrode are directed to a plasma display panel.

In general, a plasma display panel (hereinafter referred to as a PDP) is formed of red (R), green (G) and blue (B) generated by excitation of a phosphor by vacuum ultraviolet (VUV) radiation emitted from a plasma obtained through gas discharge. A display device that implements a predetermined image using visible light.

Such a PDP can realize an ultra-large screen of 60 inches or more with a thickness of only 10 cm or less, and since it is a self-luminous display device such as a CRT, it has no characteristic of distortion due to color reproducibility and viewing angle. As a result, it is gaining popularity as a TV and an industrial flat panel display having strength in terms of productivity and cost.

In the surface discharge type PDP, which is widely adopted at present, the scan electrode, the sustain electrode, and the address electrode interact with each other to generate a plasma discharge in the discharge cell, thereby realizing a screen.

The plasma display panel is a gas discharge display device using a light emitting phenomenon in which vacuum ultraviolet rays generated when an inert gas is discharged between two glass substrates facing each other excite phosphors.

In addition, the plasma display panel includes a front substrate and a rear substrate facing each other, and a scan electrode, a sustain electrode, and a dielectric layer are formed on the front substrate.

The rear substrate includes a plurality of address electrodes for dividing the entire screen into a plurality of cells together with the scan electrode and the sustain electrode, a dielectric layer for protecting the address electrode and performing electrode insulation, a partition wall forming a discharge cell; It is made of a phosphor that is printed and coated inside the discharge cells formed by the barrier ribs and is excited by ultraviolet rays during the discharge of each cell to emit visible light.

In addition, the plasma display panel is formed with a transparent electrode connected to each scan electrode and the sustain electrode formed on the front substrate, wherein the transparent electrode has a predetermined gap (GAP) inside the discharge cell, and the address electrode The discharge generates a plasma, and the ultraviolet rays emitted from the plasma excite the phosphor and emit light.

When voltage is applied to any one of the address electrode and the scan electrode and the sustain electrode, an address discharge is generated between them, and charged particles are formed on the lower surface of the dielectric layer of the front substrate, whereby sustain discharge is performed. It is made between the transparent electrodes of the scan electrode and the sustain electrode having the GAP.

In the conventional plasma display panel, in order for the discharge started from the predetermined gap GAP to spread effectively to the entire discharge cell, the discharge should be initiated over a wide area, and the predetermined gap GAP is formed at regular intervals. In this case, there is a problem that the start of discharge occurs locally and the spread of discharge is not smoothly performed.

That is, since a uniform discharge region is not formed over the entire surfaces of the transparent electrodes when a discharge is generated by applying a voltage to the scan electrodes and the sustain electrodes, which are discharge sustaining electrodes, unnecessary portions that contribute less to the discharge of the transparent electrodes. With this increase, this portion not only lowers the discharge efficiency in the discharge cell but also covers a substantial part of the discharge cell, thereby reducing the luminance.

The present invention has been made to solve the above problems of the prior art, the object of the scan auxiliary electrode / sustain auxiliary electrode is formed as a transparent electrode to cover the discharge space, the scan auxiliary electrode / sustain auxiliary electrode According to an aspect of the present invention, there is provided a plasma display panel having a discharge cell structure in which protrusions are formed to increase the area of a counter electrode and thus discharge efficiency is improved.

According to an aspect of the present invention, there is provided a plasma display panel including: a rear substrate having a partition wall partitioning a plurality of address electrodes and discharge cells; A first protrusion facing the rear substrate and including a front substrate on which a plurality of scan electrodes and a sustain electrode are formed to cross the address electrode and electrically connected to the scan electrodes; A second protrusion spaced apart from the first protrusion; A scan auxiliary electrode including a first connector electrically connecting the first and second protrusions; A third protrusion electrically connected to the sustain electrode; A fourth protrusion spaced apart from the third protrusion; A sustain auxiliary electrode including a second connection part electrically connecting the third and fourth protrusions, and a first discharge space is formed between the first protrusion of the scan auxiliary electrode and the fourth protrusion of the sustain auxiliary electrode; And a second discharge space is formed between the second protrusion of the scan auxiliary electrode and the third protrusion of the sustain auxiliary electrode.

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In the plasma display panel, a first discharge space is formed between the first protrusion of the scan auxiliary electrode and the fourth protrusion of the sustain auxiliary electrode, the second protrusion of the scan electrode, and the third protrusion of the sustain auxiliary electrode. A second discharge space is formed between.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing the configuration of a plasma display panel according to the present invention. The scan electrode and the sustain electrode of the plasma display panel should be arranged in units of discharge cells, but only one scan electrode and one sustain electrode are shown for convenience.

As shown in FIG. 1, the plasma display panel according to the present invention includes a front substrate 10 and a rear substrate 20.

In this case, a scan electrode 11 and a sustain electrode 12 are formed on the front substrate 10, and a first dielectric layer 13 is preferably stacked adjacent to the scan electrode 11 and the sustain electrode 12. Do. In addition, a dielectric protective layer 14 may be included to protect the first dielectric layer 13.

In addition, the back substrate 20 is provided with an address electrode 21 and a second dielectric layer 22 facing the scan electrode 11 and the sustain electrode 12 formed on the front substrate 10.

In addition, a partition 23 partitioning the discharge cell, and a phosphor 24 that is excited by ultraviolet rays at the time of discharge and emits visible light are coated inside the discharge cell.

In addition, the plasma display panel configured as described above applies a voltage having opposite polarity to the scan electrode 11, the sustain electrode 12, and the address electrode 21 to select a cell in which discharge is to be generated, and the scan electrode ( 11) and the sustain electrode 12 alternately apply a voltage to generate a discharge.

Therefore, when a vacuum ultraviolet ray (VUV) is generated by the discharge, the vacuum ultraviolet ray (VUV) excites / lights up the phosphor 24 coated in the discharge space to generate visible light, thereby providing the user with an image through the screen. Will be shown.

In addition, the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a are formed on the front substrate 10, and the front substrate 10 faces the rear substrate 20 to form a discharge cell v. do.

In this case, the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a formed on the front substrate 10 form a predetermined gap GAP, and the formed gap GAP serves as a discharge path and thus the address electrode. When a voltage is applied to the reference numeral 21 and the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a, a discharge is generated from the gap GAP.

2 is an exemplary view showing an embodiment of a plasma display panel according to the present invention. The partition walls forming the discharge cells of the plasma display panel may be formed in a stripe shape, a lattice shape, a honeycomb shape, and the like. However, the scan auxiliary electrode and the sustain auxiliary electrode of the plasma display panel may be formed regardless of the partition wall partitioning the discharge cells. Since they are formed in the same manner, the partition wall shape will be described in the present specification.

As shown in FIG. 2, the scan electrode 11 and the sustain electrode 12 are formed on the front substrate 10 in parallel with each other, and the scan auxiliary electrode 11 and the sustain electrode 12 The scan auxiliary electrode 11a and the sustain auxiliary electrode 12a are connected to each other.

In addition, the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a are formed as transparent electrodes, and discharge cells adjacent to the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a of one discharge cell v The scan auxiliary electrode 11a and the sustain auxiliary electrode 12a of v) are electrically connected to each other to form an I shape toward the counter electrode.

In this case, the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a are formed in an I-shape, and the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a are formed on the front substrate 10. The scan auxiliary electrode 11a and the sustain auxiliary electrode 12a protrude toward the center of the discharge cell v, and are electrically connected to neighboring discharge cells v, respectively.

In addition, the scan auxiliary electrode 11a and the sustain auxiliary electrode 12a having the protrusion formed inside the discharge cell v face the protrusion of the scan auxiliary electrode 11a and the protrusion of the sustain auxiliary electrode 12a facing each other. It protrudes and is formed.

3 is a plan view showing an embodiment of a plasma display panel according to the present invention.

As shown in FIG. 3, the plasma display panel includes a scan auxiliary electrode 11a having at least one protrusion formed from the first partition 23a and a sustain having at least one protrusion formed from the second partition 23b. It comprises an auxiliary electrode 12a.

In this case, in the plasma display panel, a protrusion of the formed scan auxiliary electrode 11a is opposite to a protrusion of the sustain auxiliary electrode 12a to form a protrusion of the scan auxiliary electrode 11a / sustain auxiliary electrode 12a. .

Here, the scan auxiliary electrode 11a may include a first protrusion 11a1 electrically connected to the scan electrode 11, a first protrusion 11a1, and a second protrusion 11a2 spaced apart by a predetermined distance. And a first connecting portion 11a3 electrically connecting the first and second protrusions, wherein the first protrusions 11a1 and the second protrusions 11a2 are the second partitions 23b. It is formed to protrude toward.

The sustain auxiliary electrode 12a may include a third protrusion 12a1 electrically connected to the sustain electrode 12, a fourth protrusion 12a2 spaced apart from the third protrusion 12a1 by a predetermined distance, and And a second connecting portion 12a3 electrically connecting the third and second protrusions, wherein the third protrusion 12a1 and the fourth protrusion 12a2 protrude toward the first partition wall 23a. do.

Here, the first protrusion 11a1 of the scan auxiliary electrode 11a and the third protrusion 12a1 of the sustain auxiliary electrode 12a are formed to protrude toward the first barrier 23a and the second barrier 23b. It protrudes longer than the second protrusion 11a2 and the fourth protrusion 12a2.

In this case, the widths of the first protrusion 11a1 and the third protrusion 12a1 of the sustain auxiliary electrode 12a of the scan auxiliary electrode 11a are the same, and the second protrusion 11a2 and the fourth protrusion 12a2 are the same. The length of is formed the same, and is formed in a width of about 60㎛ to 65㎛.

In addition, the first connecting portion 11a3 and the second connecting portion 12a3 of the scan auxiliary electrode 11a / sustain auxiliary electrode 12a may have a first partition 23a and a second partition 23b of the back substrate 20. It is formed on the front substrate 10 so that some or all of them overlap in a position opposite to).

In this case, the widths of the first connection part 11a3 and the second connection part 12a3 of the scan auxiliary electrode 11a / sustain auxiliary electrode 12a are the same and are formed to have a width of about 60 μm. .

In addition, the address electrode 21 of the back substrate 20 protrudes in the direction of the second protrusion 11a2 to the address electrode 21 so as to overlap the second protrusion 11a2 of the scan auxiliary electrode 11a. H) is formed and a voltage is applied to the address electrode 21 and the scan electrode 11 / sustain electrode 12 so that the discharge effect of the plasma display panel is improved when discharge occurs.

In the plasma display panel, a first discharge space P is formed between the first protrusion 11a1 of the scan auxiliary electrode and the fourth protrusion 12a2 of the sustain auxiliary electrode, and the second protrusion of the scan auxiliary electrode ( A second discharge space P 'is formed between 11a2) and the third protrusion 12a2 of the sustain auxiliary electrode.

In this case, the plasma display panel simultaneously discharges the first discharge space P of the scan auxiliary electrode and the second discharge space P ′ of the sustain auxiliary electrode during plasma discharge.

As described above, the plasma display panel according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, and those skilled in the art within the scope of the technical idea of the present invention are protected. Application is possible.

In the plasma display panel according to the present invention configured as described above, as the scan auxiliary electrode / sustain auxiliary electrode is formed, a discharge is generated through the discharge space between the auxiliary electrode / sustain auxiliary electrode, and thus the initial discharge voltage of the plasma display panel As a result, the time jitter characteristic of the electrons emitted during the plasma discharge is lowered and the number of discharges is improved. As the discharge efficiency is smoothly increased by the discharge diffusion from the discharge region, the brightness in the discharge cell is improved.

Claims (9)

A back substrate having a partition wall defining a plurality of address electrodes and discharge cells; A front substrate facing the rear substrate and having a plurality of scan electrodes and sustain electrodes formed to intersect the address electrode; A first protrusion electrically connected to the scan electrode; A second protrusion spaced apart from the first protrusion; A scan auxiliary electrode including a first connector electrically connecting the first and second protrusions; And A third protrusion electrically connected to the sustain electrode; A fourth protrusion spaced apart from the third protrusion; A sustain auxiliary electrode including a second connection part electrically connecting the third and fourth protrusions; A first discharge space is formed between the first protrusion of the scan auxiliary electrode and the fourth protrusion of the sustain auxiliary electrode, and a second discharge space is formed between the second protrusion of the scan auxiliary electrode and the third protrusion of the sustain auxiliary electrode. Plasma display panel, characterized in that formed. delete delete The method according to claim 1, And the connection portion is formed at a position overlapping with the partition wall. The method according to claim 1, And the first protrusion and the third protrusion are longer than the second and fourth protrusions. The method according to claim 1, And the address electrode protrudes toward the second protrusion of the scan auxiliary electrode. delete The method according to claim 1, And the scan auxiliary electrode / sustain auxiliary electrode is a transparent electrode. The method according to claim 1, And the scan auxiliary electrode / sustain auxiliary electrode is formed to have the same length and width as the length of the width.

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