KR100353953B1 - Plasma Display Panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel which can increase luminous efficiency and luminance by increasing the luminous area in discharge cells.

The plasma display panel according to the present invention is characterized in that red, green, and blue discharge cells are alternately arranged in parallel with the address electrode direction.

Accordingly, the three-electrode plasma display panel of the present invention has the advantage that the light emitting area of the phosphor layer is increased during sustained surface discharge, thereby increasing luminous efficiency and improving luminance.

Description

Plasma Display Panel

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 capable of increasing a light emitting area of a phosphor to increase luminous efficiency.

Plasma Display Panel (hereinafter referred to as "PDP") emits phosphors by 147 nm ultraviolet rays generated upon discharge of He + Xe or Ne + Xe gas, thereby displaying an image including characters or graphics. Such a PDP is not only thin and easy to enlarge, but also greatly improved in quality due to recent technology development. These PDPs are largely classified into a DC drive method and an AC drive method. Unlike the DC driving method, the PDP of the AC driving method is attracting more attention as a display device because of the advantages of low voltage driving and long life by using a dielectric. PDP is composed of a plurality of discharge cells arranged in a matrix form, one discharge cell constitutes a pixel of the screen.

1 is a perspective view showing a conventional three-electrode PDP.

Referring to FIG. 1, a discharge cell of a three-electrode AC surface discharge type PDP includes a scan / sustain electrode 3 and a common sustain electrode 4 formed on an upper substrate 2, and an address formed on a lower substrate 10. An electrode 12 is provided. The upper dielectric layer 6 and the protective film 8 are stacked on the upper substrate 2 on which the scan / sustain electrode 3 and the common sustain electrode 4 are arranged side by side. In the upper dielectric layer 6, wall charges generated during plasma discharge are accumulated. The protective film 8 prevents damage to the upper dielectric layer 6 due to sputtering generated during plasma discharge, and increases emission efficiency of secondary electrons. As the protective film 8, magnesium oxide (MgO) is usually used. The lower dielectric layer 14 and the partition wall 16 are formed on the lower substrate 10 on which the address electrode 12 is formed, and the phosphor layers 18R, 18G, and 18B are coated on the lower dielectric layer 14 and the partition wall surface. The address electrode 12 is formed in the direction crossing the scan / sustain electrode 3 and the common sustain electrode 4. The partition wall 16 is formed in parallel with the address electrode 12 to prevent the ultraviolet rays and the visible light generated by the discharge from leaking to the adjacent discharge cells. The phosphor layers 18R, 18G, and 18B are excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. Inert gas for gas discharge is injected into the discharge space provided between the upper and lower plates 1 and 9 and the partition wall 16.

FIG. 2 is a plan view illustrating a front structure of the PDP shown in FIG. 1.

Referring to FIG. 2, a conventional three-electrode PDP includes a plurality of scan / sustain electrode lines Y1 to Ym, common sustain electrode lines Z1 to Zm, address electrode lines X1 to Xn, and partition walls 20. Equipped. The scan / sustain electrode lines Y1 to Ym and the common sustain electrode lines Z1 to Zm are formed in pairs and parallel to each other, and the address electrode lines X1 to Xn are formed on the electrodes Y1 to Ym and Z1 to Zn. It is formed side by side in the direction intersecting with Zm). The partition walls 20 are formed side by side in the direction crossing the sustain electrode line pairs Y1 to Ym and Z1 to Zm with the respective address electrode lines X1 to Xn interposed therebetween. Phosphor layers 22R, 24G, and 26B are formed between the layers 20). In addition, m × n discharge cells 21 are arranged in a matrix at the intersection of the sustain electrode line pairs Y1 to Ym and Z1 to Zm and the address electrode lines X1 to Xn. In this PDP, the pixel is composed of three discharge cells 27, 29 and 31 arranged in the horizontal direction as shown in FIG. Each of the three discharge cells 27, 29, and 31 includes red, green, and blue phosphors 28R, 30G, and 32B, and the short sides of the cells are arranged in parallel with the sustain electrode line pairs 33, and the long sides are orthogonal to each other. do.

Referring to the process of emitting light by the conventional three-electrode PDP, scan pulses are supplied to the scan / sustain electrode lines Y1 to Ym, and data pulses are applied to the address electrode lines X1 to Xn in synchronization with each other. As a result, address discharge occurs selectively in the discharge cells 21. Ultraviolet rays generated by such an address discharge excite and transition the phosphors 22R, 24G, and 26B to generate visible light. Subsequently, the pairs of the sustain electrode lines Y1 to Ym and Z1 to Zm cause surface discharge by sustain pulses supplied in the sustain period to maintain light emission of the phosphors 22R, 24G, and 26B.

However, since the discharge cells of the conventional three-electrode PDP have short sides in the longitudinal direction of the pair of sustain electrode lines due to the limitation of the pixel cell size, the emission area of the phosphor due to the sustain surface discharge is inevitably small. As a result, there is a problem that the luminous efficiency of the panel is lowered and the luminance is lowered.

Accordingly, an object of the present invention is to provide a plasma display panel which can increase the light emitting area in a discharge cell to increase luminous efficiency and brightness.

1 is a perspective view showing a conventional three-electrode plasma display panel.

2 is a plan view showing the structure of a conventional three-electrode plasma display panel.

3 is a plan view illustrating a pixel structure illustrated in FIG. 2.

4 is a plan view showing the structure of a three-electrode plasma display panel according to an embodiment of the present invention;

5 is a plan view illustrating a pixel structure illustrated in FIG. 4.

6 is a plan view showing a three-electrode plasma display panel according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: top board 2: top board

3,42,46,50, Y1 to Ym: scan / sustain electrode

4,44,48,52, Z1 to Zm: common sustain electrode

6: upper dielectric layer 8: protective film

9: lower board 10: lower board

12, X1 to Xn: address electrode 14, lower dielectric layer

16,20,40,66: bulkhead

18R, 22R, 28R, 34R, 54R, 60R: Red phosphor

18G, 24G, 30G, 36G, 56G, 62G: Green Phosphor

18B, 26B, 32B, 38B, 58B, 64B: Blue phosphor

21,27,29,31,35,55,57,59,61: discharge cell

33,43,47,51: Sustain electrode line pair

In order to achieve the above object, the three-electrode plasma display panel of the present invention is characterized in that red, green, and blue discharge cells are alternately arranged in parallel with the address electrode direction.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 4 to 6.

4 is a plan view showing a front structure of a three-electrode surface discharge type PDP according to an embodiment of the present invention.

Referring to FIG. 4, a three-electrode PDP according to an embodiment of the present invention includes a plurality of scan / sustain electrode lines Y1 to Ym, common sustain electrode lines Z1 to Zm, and address electrode lines X1 to Xn; The partition walls 40 are provided. The scan / sustain electrode lines Y1 to Ym and the common sustain electrode lines Z1 to Zm are formed in pairs and parallel to each other, and the address electrode lines X1 to Xn are the electrodes Y1 to Ym and Z1. To Zm). The partition walls 40 are formed side by side in a direction crossing the address electrode lines X1 to Xn to prevent ultraviolet rays and visible light generated by the discharge from leaking to adjacent discharge cells. The phosphor layers 34R, 36G, and 38B are applied in the same direction as the sustain electrode line pairs Y1 to Ym and Z1 to Zm between the partition wall 40 and the partition wall 40 thus formed. In addition, m × n discharge cells 35 are arranged in a matrix at the intersections of the sustain electrode line pairs Y1 to Ym and Z1 to Zm and the address electrode lines X1 to Xn. As shown in FIG. 5, the three discharge cells 55, 57, and 59 constituting one pixel include red, green, and blue phosphors 54R, 56G, and 58B, respectively. Parallel to the line pairs Y1 to Ym, Z1 to Zm, and short sides are arranged to be orthogonal to each other. Each of the discharge cells 55, 57, 59 arranged in this way is arranged in the longitudinal direction. Accordingly, since the discharge cells 55, 57, 59 are formed long in the direction parallel to the sustain electrode line pairs Y1 to Ym, Z1 to Zm, the surface discharge of the electrode line pairs Y1 to Ym and Z1 to Zm is discharged. The light emitting area of the phosphors 54R, 56G and 58B is increased.

6 is a plan view illustrating a three-electrode surface discharge type PDP having a lattice-shaped partition wall structure according to another embodiment of the present invention.

Referring to FIG. 6, a PDP according to another embodiment of the present invention includes a plurality of scan / sustain electrode lines Y1 to Ym, common sustain electrode lines Z1 to Zm, and address electrode lines X1 to Xn, and partition walls. And (66). The scan / sustain electrode lines Y1 to Ym and the common sustain electrode lines Z1 to Zm are formed in pairs and parallel to each other, and the address electrode lines X1 to Xn are the electrodes Y1 to Ym and Z1 to Zm. It is formed side by side in the direction intersecting with). The partitions 66 are formed in a lattice shape to surround the intersections of the sustain electrode line pairs Y1 to Ym and Z1 to Zm and the address electrode lines X1 to Xn, respectively. This lattice-shaped partition wall 66 prevents ultraviolet rays and visible light generated by the discharge from leaking into adjacent discharge cells in all directions. The phosphor is applied onto the lattice-shaped partition wall 66 thus formed, and the phosphor layer 60R is formed on the intersection of the sustain electrode line pairs Y1 to Ym, Z1 to Zm surrounded by the partition wall 66 and the address electrode lines X1 to Xn. , 62G, 64B) are formed. Where the sustain electrode line pairs Y1 to Ym, Z1 to Zm and the address electrode lines X1 to Xn cross each other, m × n discharge cells 61 are arranged in a shape surrounded by a partition wall in all directions.

The PDP of the present invention having such a lattice partition structure can prevent optical interference or interference between adjacent cells located in all directions.

As described above, in the three-electrode PDP according to the present invention, since the phosphor layer is formed in the same direction as the pair of the sustain electrode lines, the emission area of the phosphor layer increases during sustain surface discharge, resulting in high luminous efficiency and high luminance.

As described above, the three-electrode plasma display panel according to the present invention has the advantage that the phosphor layer is formed in the same direction as the pair of the sustain electrode lines, so that the emission area of the phosphor layer increases during sustain surface discharge, resulting in higher luminous efficiency and improved luminance. There is this.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (4)

A plasma display panel comprising a sustain electrode group arranged in pairs on a rear surface of an upper substrate, and an address electrode group arranged in parallel with a direction perpendicular to the sustain electrode group on an upper surface of the lower substrate. And red, green, and blue discharge cells are alternately arranged in parallel with the address electrode direction. The method of claim 1, And a long side of the discharge cell is parallel to the sustain electrode group, and a short side of the discharge cell is orthogonal to each other. The method of claim 1, And a partition wall formed in a direction parallel to the sustain electrode group to separate the discharge cells. The method of claim 1, And a partition wall having a lattice structure.