KR20020056006A - Plasma Display Panel and Method of Fabricating the same - Google Patents

Abstract

PURPOSE: A PDP(plasma display panel) and a manufacturing method thereof are provided to increase luminance. CONSTITUTION: A PDP comprises a lower plate(76), address electrodes(82X), and barrier ribs(74). The barrier ribs(74) are formed in parallel to the address electrodes(82X). Phosphor is coated over the lower plate(76) and the barrier ribs(74) for generating R, G or B visible ray when excited by ultraviolet ray generated during plasma discharge. The barrier ribs(74) prevent the visible ray and the ultraviolet ray from leaked into adjacent cells. The barrier ribs(74) are formed as semi-circle zigzag in parallel to the address electrode(82X) to surround a cell circularly. The reflectivity of circular barrier ribs(74) is increased to enhance luminance and efficiency. Three circular cells form a pixel so as to implement a more precise image.

Description

Plasma Display Panel and Method of Fabrication

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel and a method for manufacturing the same, and more particularly, to a plasma display panel for increasing luminance and a method for manufacturing the same.

Recently, a liquid crystal display (hereinafter referred to as "LCD"), a field emission display (hereinafter referred to as "FED") and a plasma display panel (hereinafter referred to as "PDP") Flat display devices such as the like have been actively developed. The PDP emits a phosphor by 147 nm ultraviolet rays generated when the He + Xe or Ne + Xe inert mixed gas is discharged, thereby displaying an image including characters or graphics. Such a PDP is not only thin and large in size, but also simple in structure, and has a high luminance and high luminous efficiency as compared to other flat display devices. Due to these advantages, research on PDP is being actively conducted.

The three-electrode AC surface discharge type PDP has advantages of low voltage driving and long life because wall charges are accumulated on the surface during discharge and protect the electrodes from sputtering caused by the discharge.

1 and 2 are perspective views illustrating a partition structure of a conventional plasma display panel.

1 and 2, the discharge cells of the PDP include sustain electrodes 12Y and 12Z formed on the upper substrate 10, and address electrodes 12X formed on the lower substrate 18. . The sustain electrodes 12Y and 12Z are formed of the transparent electrode 12a and the bus electrode 12b. An upper dielectric layer 14 and a passivation layer 16 are formed on the upper substrate 10 on which the sustain electrodes 12Y and 12Z are formed. The upper dielectric layer 14 accumulates wall charges generated during plasma discharge, and the protective layer 16 prevents damage to the upper dielectric layer 14 due to sputtering generated during plasma discharge and increases emission efficiency of secondary electrons. . Partitions 24a and 24b are formed on the lower substrate 18 on which the address electrodes 12X are formed in parallel with the address electrodes 12X. The phosphor 26 is coated on the lower substrate 18 and the partition walls 24a and 24b. The phosphor 26 is 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 10 and 18 and the partition walls 24a and 24b. The partitions 24a and 24b prevent the ultraviolet rays and the visible light generated by the discharge from leaking into adjacent discharge cells. The conventional barrier rib structure is divided into a stripe structure as shown in FIG. 1 and a well structured barrier rib structure as shown in FIG. 2. Here, in the case of the stripe-shaped partition wall 24a structure shown in FIG. 1, it is easy to exhaust, but has a disadvantage in that the coating area of the phosphor 26 is small. In addition, in the case of the well-shaped partition wall 24b illustrated in FIG. 2, the coating area of the phosphor 26 may be increased to increase luminance, but the exhaust gas may not be well exhausted. In order to solve this problem, a PDP having a delta partition structure as shown in FIG. 3 has been proposed.

Referring to FIG. 3, a discharge cell of a PDP having a delta partition structure includes sustain electrodes 12Y and 12Z formed on an upper substrate 10 and an address electrode 12X formed on a lower substrate 18. It is provided. The sustain electrodes 12Y and 12Z are formed of the transparent electrode 12a and the bus electrode 12b. The partition wall 24c formed on the lower substrate 18 on which the address electrode 12X is formed has a structure in which one cell is surrounded by six surfaces and connected to narrow channels 34.

An electrode structure of a PDP having such a delta partition structure is shown in FIG. 4 in detail.

Referring to FIG. 4, this electrode structure is composed of two sustain electrodes 12Y and 12Z, similarly to the stripe partition wall or well partition wall structure. The sustain electrodes 12Y and 12Z are composed of a transparent electrode 12a made of a transparent electrode material for increasing transmittance of visible light and a metal bus electrode 12b for lowering high electrical resistance of the transparent electrode 12a. However, since the sustain electrodes 12Z and 12Y are symmetrically positioned in all pixel cells, unlike the other structure, the metal bus electrode 12b is positioned at the center of the transparent electrode 12a. As a result, light in the upper and lower portions of the cell is blocked, resulting in black lines in the direction of the electrode, thereby reducing the luminance.

Accordingly, an object of the present invention is to provide a plasma display panel and a method of manufacturing the same for increasing luminance.

1 is a perspective view showing a plasma display panel having a conventional stripe-type partition wall structure.

2 is a perspective view showing a plasma display panel having a conventional well-shaped partition wall structure;

3 is a perspective view showing a plasma display panel having a conventional delta partition structure.

4 is a plan view illustrating an electrode structure of the plasma display panel shown in FIG. 3.

5 is a perspective view illustrating a delta type plasma display panel according to an exemplary embodiment of the present invention.

FIG. 6 is a plan view illustrating a partition structure of the plasma display panel illustrated in FIG. 5. FIG.

FIG. 7 is a plan view showing an electrode structure of the plasma display panel shown in FIG. 5; FIG.

<Description of Symbols for Main Parts of Drawings>

10,50: upper substrate 12Y, 12Z, 52Y, 52Z, 82Y, 82Z: sustain electrode

12X, 52X, 82X: Address electrode 12a, 52a, 82a: Transparent electrode

12b, 52b, 82b: bus electrode 14, 54: dielectric layer

16,56: protective film 18,58,76: lower substrate

24a, 24b, 24c, 60, 74: bulkhead 26, 62: phosphor

34: narrow channel

In the plasma display panel of the present invention, a barrier rib is formed between an upper substrate and a lower substrate, and the plasma display panel generates a discharge between the transparent electrodes and the address electrodes formed on the upper and lower substrates, respectively. The discharge occurs and has a discharge cell arranged in a circle.

Other objects and features of the present invention in addition to the above object will be 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. 5 to 7.

5 is a perspective view illustrating a lower substrate of a PDP having a circle-shaped partition wall according to an exemplary embodiment of the present invention.

6 is a plan view illustrating a partition structure of the plasma display panel illustrated in FIG. 5.

5 and 6, in the PDP, a partition 74 is formed on the lower substrate 76 on which the address electrode 82X is formed in parallel with the address electrode 82X. Phosphors (not shown) are applied to the surfaces of the lower substrate 76 and the partition wall 74. The phosphor is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. The partition wall 74 prevents the ultraviolet rays and the visible light generated by the discharge from leaking to the adjacent discharge cells.

Here, in the partition wall 74, one cell is surrounded by a circle, and pixel cells are connected by narrow channels.

FIG. 7 illustrates an electrode structure of the PDP shown in FIG. 5.

Referring to FIG. 7, the electrode structure of the PDP is composed of two sustain electrodes 82Y and 82Z, similarly to the conventional PDP electrode structure. The sustain electrodes 82Y and 82Z are composed of a transparent electrode 82a made of a transparent electrode material for increasing the transmittance of visible light and a metal bus electrode 82b for lowering the high electrical resistance of the transparent electrode 82a. Since the sustain electrodes 82Z and 82Y are symmetrically positioned in all pixel cells, the metal bus electrode 82b is positioned at the center of the transparent electrode 82a.

As described above, the plasma display panel and the method of manufacturing the same according to the present invention are formed in a circle shape in which the delta-type bulkhead is rounded, unlike the conventional delta-type bulkhead, so that the reflectivity of the bulkhead may be increased and the brightness and efficiency may be improved. do. In addition, since three circle cells form one pixel, a more sophisticated screen can be realized.

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 (3)

In the plasma display panel, a barrier rib is formed between the upper substrate and the lower substrate, and discharges between the transparent electrodes and the address electrodes formed on the upper and lower substrates, respectively. And a discharge cell in which the discharge occurs and are arranged in a circle. The method of claim 1, The discharge cell is a plasma display panel, characterized in that the partition wall is formed in a zigzag of a semi-circular shape so that the partition wall surrounds the discharge cell in all directions. The method of claim 1, And a barrier rib in a circle shape in a direction parallel to the address electrode formed on the lower substrate.