KR20010004091A - Plasma display panel having sustain electrode structure capable of increasing the positive column discharge area - Google Patents

Abstract

PURPOSE: A PDP(Plasma Display Panel) having sustain electrode structure increasing positive column discharge region is provided to utilize positive column in luminescing because the distance between the electrodes is long while maintaining the discharge voltage low. CONSTITUTION: A PDP(Plasma Display Panel) having sustain electrode structure increasing positive column discharge region comprises a glass substrate, the transparent discharge sustain electrode, a bus electrode and a whole surface plate. The transparent discharge sustain electrode is formed on the glass substrate and has the discharge beginning parts(AX,AY) and the discharge maintenance parts(BX,BY) connected to the discharge beginning parts(AX,AY). The area of the discharge maintenance parts(BX,BY) are wider than the area of the discharge beginning parts(AX,AY). The bus electrode is lined with the transparent discharge sustain electrode and overlaps with the discharge maintenance parts(BX,BY). The whole surface plate includes a transparent dielectric layer covering the bus electrode.

Description

Plasma display panel having a sustain electrode structure that can increase the amount of discharge of positive light column {PLASMA DISPLAY PANEL HAVING SUSTAIN ELECTRODE STRUCTURE CAPABLE OF INCREASING THE POSITIVE COLUMN DISCHARGE AREA}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly to a plasma display panel having a sustain electrode structure capable of increasing a positive light discharge area.

Plasma display panels (hereinafter referred to as PDPs) are devices that display characters or graphics using light emitted from plasma generated during gas discharge. PDP has the advantage of being most suitable for large-scaled display among various flat panel display devices such as liquid crystal display (LCD), field emission display (FED), and electroluminescence display (ELD) which are being actively studied.

That is, the plasma display panel can be enlarged to 40 "or more, and CRT level colorization is possible because the ultraviolet light generated by the discharge uses a photoluminescence mechanism that stimulates the fluorescent film and emits visible light. As a self-emissive display device, it has many unique advantages that are not found in other flat panel devices such as a wide viewing angle of 160 ° or more, thus combining the functions of next-generation high-definition wall-mounted TVs, TVs, and PCs. BACKGROUND ART As a large display device for a multimedia, it is considered to be prominent, and interest in this has recently increased.

PDP uses two glass substrates with a thickness of 3 mm to apply an appropriate electrode and phosphor on each substrate, and forms plasma in the space therebetween while maintaining the distance between the two substrates at about 0.1 mm to 0.2 mm. Since the method is adopted, the size of the flat plate can be increased.

In addition, in the PDP, the gas discharge has a strong non-linearity in which discharge does not occur even when a voltage is applied between electrodes, and a super large panel having a memory function that is essential for driving a large display. Even in this case, a high quality image can be expressed without deteriorating the luminance.

Plasma display panels have a direct current (DC type) in which the electrode for generating plasma is directly exposed to the plasma so that conduction current flows directly through the electrode, and the electrode is covered with a dielectric and is not directly exposed. ) Is divided into the alternating current type (AC type).

A pair of parallel transparent electrodes, a bus electrode formed on the transparent electrode, a dielectric layer, and the like are formed on the front plate of the AC PDP. The back plate is formed with an address electrode perpendicular to the bus electrode, a dielectric layer, a partition formed on the dielectric layer, and a fluorescent layer formed between the partition walls. The front and back plates of such a structure are sealed and exhausted to form a PDP.

PDP driving includes a reset period for making all cells uniform, an address period for selecting light emitting cells, a sustain period for applying a pulse to the selected cells to maintain a discharge, and the like. It includes.

The discharge consists of a process in which electrons emitted from the protective film are accelerated by an electric field to ionize atoms, and electrons by ionization are accelerated to excite atoms. The excited atoms emit ultraviolet light and the emitted ultraviolet light is absorbed by the phosphor to emit visible light.

In general, when a glow discharge occurs between two electrodes, a cathode arm part, a negative glow, a Faraday arm part, and a positive column are sequentially formed from the cathode to the anode direction. A lot of visible light is generated. If the gap between the anode and cathode is gradually narrowed, the shape of the bouglow and faraday arm is not changed, and only the short liquor is shortened, and when the anode and the cathode are closer, the Faraday arm and the boglow are disappeared.

It is known that the display element, such as a fluorescent lamp using a mercury discharge, can increase the efficiency by using a positive liquor discharge. Already, encouraging research results using positive discharges have been published in DC-type PDPs.

In AC type PDP, there is a need for a method that can effectively use the positive light discharge.

In order to use the positive light discharge, the distance between the sustain electrodes must be longer than that of the conventional PDP which mainly uses the cathode glow.

The front plate of the conventional AC PDP has a transparent electrode 11, a bus electrode 12, a transparent electrode 11 and a bus electrode formed on a glass substrate (not shown) which is a front plate as shown in FIG. It consists of a transparent dielectric layer and a protective film which cover (12). In FIG. 1, the transparent dielectric layer and the protective film are not shown.

In order to achieve positive light discharge by using the front plate of the AC type PDP having the structure as shown in FIG. 1, the distance between the sustain electrodes should be longer than that of the conventional PDP. As the distance between the sustain electrodes becomes longer, the driving voltage is increased. There is a disadvantage that the manufacturing cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has an object of the present invention to provide a plasma display panel having a sustain discharge electrode structure capable of using a positive liquor for emitting light with a long distance between electrodes while maintaining a low discharge voltage.

1 is a plan view of a conventional plasma display panel front panel;

2 is a plan view showing a transparent discharge sustaining electrode according to a first embodiment of the present invention;

3 is a plan view showing a transparent discharge sustaining electrode according to a second embodiment of the present invention;

4A to 4C are plan views showing the structure of the transparent discharge sustaining electrodes according to the third, fourth and fifth embodiments of the present invention.

* Explanation of reference numerals for the main parts of the drawings

A, AX, AY: discharge start section B, BX, BY: discharge duration section

C, CX, CY: Connection

The present invention for achieving the above object, there is provided a plasma display panel including a discharge sustain electrode having a discharge initiation portion and a discharge sustaining portion connected to the discharge initiation portion.

The plasma display panel includes a glass substrate; A transparent discharge sustain electrode formed on the glass substrate and including the discharge initiation part and the discharge sustaining part having a larger area than the discharge initiation part; The plasma display panel includes a front electrode including a bus electrode, a glass substrate, a transparent discharge sustaining electrode, and a transparent dielectric layer covering the bus electrode, which is parallel to the transparent discharge sustaining electrode and overlaps the discharge sustaining part. To provide.

The transparent discharge sustain electrode may have at least one pattern shape. That is, it is formed in a plurality of pattern shapes.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a plan view showing a transparent sustain electrode according to a first embodiment of the present invention, wherein each of the X and Y electrodes is a discharge initiation part (AX, AY), a discharge sustain part (BX, BY) connected to a discharge initiation part, and a discharge. The connection part CX and CY which connects a starting part and a discharge duration part is shown. FIG. 2 illustrates only a transparent discharge sustain electrode as a portion corresponding to region '10' of FIG.

The areas of the discharge start units AX and AY are smaller than the areas of the discharge duration units BX and BY.

When a discharge pulse is applied, discharge occurs first between the discharge start portion AX of the X electrode having a relatively small interval and the discharge start portion AY of the Y electrode. Since the interval between the discharge initiation portions AX and AY of the X and Y electrodes is small, the discharge between the discharge initiation portions is terminated, but the discharge duration of the X and Y electrodes having a relatively large interval by the priming particles generated at this time. Discharge easily occurs between (BX, BY) to form a main discharge of sustain discharge. As such, the sustain discharge occurs between the large gap electrode and the discharge continuity parts BX and BY, so that the positive light region occupies a large portion, and thus the discharge with high luminous efficiency is possible.

The width a and the length f of the discharge initiation parts AX and AY are as small as possible within the range having a stable discharge start voltage, and the width b of the connection parts CX and CY is initiation of discharge due to electrode resistance. All positions between the negative portion (AX, AY) and the discharge sustaining portion (BX, BY) are made small as long as they do not affect the discharge voltage margin, and the discharge initiation portion (AX, AY) and the connecting portion (CX, CY) are It is preferable that the total length d) be as large as possible to enlarge the positive beam discharge area. However, it is not necessarily limited to such conditions.

3 is a plan view showing a transparent sustaining electrode according to a second exemplary embodiment of the present invention, showing that the discharge sustaining portion B of the transparent sustaining electrodes of neighboring cells are in contact with each other.

4A to 4C are plan views showing structures of the transparent sustain electrodes according to the third, fourth, and fifth embodiments of the present invention, and show different types of transparent sustain electrodes.

That is, the area of the holding portion C connecting the discharge starting portion A and the discharge sustaining portion B to the transparent sustain electrode including the discharge starting portion and the discharge holding portion is shown in FIG. 4A. In A), it may be configured to become wider toward the discharge duration portion B, and as shown in FIG. 4B, the area of the discharge duration portion C gradually increases at a portion in contact with the connection portion C and becomes constant. Alternatively, as shown in FIG. 4C, the area of the discharge sustaining portion B may gradually increase from a portion in contact with the discharge initiation portion A without distinguishing the connection portion and the discharge sustaining portion B. FIG. .

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

The present invention made as described above is a very simple way to change the structure of the discharge sustaining electrode can increase the luminous source discharge area without increasing the discharge voltage to increase the luminous efficiency.

Claims (8)

In the plasma display panel, A discharge sustain electrode having a discharge initiation portion and a discharge duration portion connected to the discharge initiation portion; Plasma display panel comprising a. The method of claim 1, The plasma display panel Glass substrates; A transparent discharge sustain electrode formed on the glass substrate and including the discharge initiation part and the discharge sustaining part having a larger area than the discharge initiation part; A bus electrode parallel to the transparent discharge sustain electrode and overlapping with the discharge sustain portion; And A transparent dielectric layer covering the glass substrate, the transparent discharge sustain electrode, and the bus electrode Plasma display panel comprising a front plate comprising a. The method of claim 2. And a connection unit between the discharge initiation unit and the discharge duration unit. The method of claim 3, wherein And the discharge continuity of neighboring cells is in contact. The method of claim 3, wherein The transparent discharge sustain electrode, And the area of the connection portion is widened from the discharge initiation portion to the discharge duration portion. The method of claim 3, wherein And the area of the discharge continuity increases gradually at a portion in contact with the connection part and then becomes constant. The method of claim 2, And an area of the discharge duration portion gradually increases from a portion in contact with the discharge start portion. The method according to any one of claims 2 to 7, The transparent discharge sustain electrode, Plasma display panel having at least one pattern form.