KR100226965B1 - Cell structure of pdp for color display - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cell structure of a PDP for color display, in which a penning mixed gas in a discharge space is discharged by surface discharge of an electron emission layer by a high voltage alternately provided from the outside. The generated ultraviolet rays generate white visible light from the fluorescent material coated on the rear glass plate, and the generated white visible light passes through the RGB filter coated thinly on the front glass plate to emit the visible light of RGB. It is possible to simplify the manufacturing process and improve the productivity of the PDP display device by reducing the production time because the fluorescent material is collectively coated on the front panel and the RGB filter is coated on the front glass plate in a thin form to display the color.

Description

Cell structure of PDDP for color display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cell structure of a plasma display panel (hereinafter, referred to as a PDP), and more particularly, to a cell structure of a PDDP for a color display suitable for displaying color.

Among the various display devices that are applied to various fields, cathode ray tubes (hereinafter abbreviated as CRTs), which are capable of clear display and colorization, simple driving, and low manufacturing cost, are used in many fields, However, since the CRT itself has a Frasco type structure, the CRT is large in size, requires a high operating voltage of approximately 10,000 V, and has a large disadvantage of display distortion.

Therefore, there is a strong demand for the emergence of a display device that can replace the CRT, and a study on a so-called flat display device having a large display area and a small volume has been continuously studied in various fields related thereto.

On the other hand, the flat display device as described above includes active devices such as electro luminescence, light emitting diodes, and PDPs, liquid crystal displays, and electro chromic displays. Display) and the like, and the present invention relates to PDP which is substantially one of the active devices.

For reference, the advantages of the PDP include a memory function that continues discharge when the input pulse is input once, and the display point is defined by the matrix structure, so that there is no distortion of the image and the emission frequency is 50-100 KHz. There is no flicker because it is high. In addition, since the PDP has a planar structure, it is advantageous for miniaturization, and since the material that reduces the extinguishing due to discharge is used on the surface of the dielectric layer in contact with the discharge, the life is long, and the panel structure mainly composed of the glass plate projects semi-fixed information as a slide It is possible to superimpose on a slide, which is advantageous for simplicity.

FIG. 2 is a diagram for explaining a cell structure of a PDP for a conventional color display, and A is a unit cell constituting the PDP.

As can be seen with reference to Figure 2, the cell structure of the PDP for the color display, the front glass plate that serves as a support of the PDP and transmits visible light emitted from the fluorescent material coated on the rear glass (Rear Glass, 280) ( The front glass substrate 210 and the high voltage (for example, 180V to 300V) of the positive (+,-) alternately provided from the outside are supplied to each unit cell of the PDP, thereby providing the desired cell among the cells of the PDP. The sustain electrode 220 for holding the discharge, the writing and sustain electrode 230 for holding the discharge of the desired cell together with the sustain electrode 220 at the time of writing data and holding the cell, and addressing the data. A high voltage that is alternately provided from the outside by coating the address electrode 240, the dielectric layer 250 protecting each electrode 220, 230, 240 during discharge of the cell, magnesium oxide (MgO), etc. Emit electrons by The electron discharge layer (Dielectric Layer, 260) is a surface discharge is generated as the electron is accelerated and each cell constituting the PDP is separated, it is composed of a partition (Separators, 270) for maintaining a discharge space.

On the other hand, the rear glass plate 280 is coated with a thin fluorescent material of RGB to display color to emit visible light of RGB by ultraviolet (Ultraviolet) generated during the discharge, and lower discharge starting voltage in the discharge space Penning (gas) is filled with a mixture so that discharge occurs.

Hereinafter, an operation process of displaying color using a conventional PDP having a cell structure as described above will be described in more detail.

First, a desired cell is selected by the writing and sustaining electrodes 230 and the address electrodes 240, and then the negative (+,-) provided to the sustaining electrodes 220 and the writing and sustaining electrodes 230 alternately from the outside. Electrons are emitted from the electron emission layer 260 by the high voltage (180V to 300V).

The electrons emitted from the electron emission layer 260 are reincident to the electron emission layer 260 by an electric field formed between the electrodes 220, 230, and 240, and due to the transfer of energy due to the reentry of these electrons. Secondary electrons are emitted from the electron emission layer 260.

The surface discharge occurs on the surface of the electron emission layer 260 due to the continuous generation of secondary electrons generated from the electron emission layer 260, and the penning mixed gas filled in the discharge space is discharged due to the surface discharge. Ultraviolet (hereinafter, abbreviated as UV) is generated.

Therefore, the visible light of the RGB is generated from the fluorescent material of the RGB thin-coated for each cell on the rear glass plate 280 by the ultraviolet light generated from the discharge space, the visible light is transmitted through the front glass plate 210 By being emitted to the front of the PDP display device, the desired color is displayed.

However, as shown in FIG. 2, since each cell of the rear glass plate 280 has to be thinly coated with a fluorescent material of RGB in order to display color, the manufacturing process is not only complicated but also takes a long time. Therefore, there is a problem that is not suitable for the mass production system of the PDP display device.

Accordingly, the present invention has been made in view of the above problems, and collectively coating a fluorescent material having a background color on the rear glass plate of the PDP, and applying a filter member corresponding to the fluorescent substance of RGB on the front glass plate of the PDP. It is an object of the present invention to provide a cell structure of PDDP (PDP) for color display that can display a color by thin coating.

In the cell structure of the PDP for the color display of the present invention for achieving the above object, the surface discharge is generated from the electron-emitting layer by the high voltage alternately provided from the outside to discharge the gas in the discharge space, In the cell structure of the PDP formed so as to display color by emitting visible light of RGB from the fluorescent material through the generated ultraviolet rays and penetrating the front glass plate, the fluorescent material is a white fluorescent material and the visible light generated from the fluorescent material. It is characterized in that the light beam is transmitted through the front glass plate coated with the RGB thin filter.

1 is a view for explaining a cell structure of a PDP for a color display according to an embodiment of the present invention;

2 is a view for explaining the cell structure of a PDP for a conventional color display.

Explanation of symbols for main parts of the drawings

110: RGB filter 210: front glass

220: sustain electrode 230: write and sustain electrode

240: address electrode 250: dielectric layer

260 electron emission layer 270 partition wall

280: rear glass

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a cell structure of a PDP for a color display according to an exemplary embodiment of the present invention.

As can be seen with reference to Figure 1, the cell structure of the PDP for the color display according to the present invention, the RGB filter 110, the front glass plate 210, the sustain electrode 220, the write and sustain electrode 230, the address The electrode 240, the dielectric layer 250, the electron emission layer 260, the partition 270, and the rear glass plate 280 are formed.

Meanwhile, in the cell structure of the PDP for the color display according to the present invention, the front glass plate 210, the sustain electrode 220, the write and sustain electrode 230, the address electrode 240, the dielectric layer 250, electron emission The layer 260, the partition wall 270 and the back glass plate 280 are formed of the front glass plate 210, the sustain electrode 220, the write and sustain electrodes of the cell structure of the PDP for a conventional color display as described above. Since 230, the address electrode 240, the dielectric layer 250, the electron emission layer 260, the partition 270 and the back glass plate 280 is substantially the same structure and performs the same function, to avoid overlapping substrates The description here will be omitted.

Therefore, the cell structure of the PDP for the color display according to the present invention and the cell structure of the PDP for the conventional conventional color display is different from that of the RGB filter 110. The explanation will be focused on.

In FIG. 1, the RGB filter 110 is made of a fluorescent material of RGB to be thinly coated on the front glass plate 210 of the PDP, emits RGB visible light by ultraviolet rays generated from the discharge space, and the rear glass plate 280. ), A fluorescent substance having a background color (for example, white color) is collectively coated thinly. On the other hand, in the same figure, A represents the unit cell which comprises a PDP.

An operation process of displaying color using the PDP having the cell structure according to the present invention having the structure as described above will be described in more detail with reference to FIG. 1.

First, a desired cell is selected by the writing and sustaining electrodes 230 and the address electrodes 240, and then the negative (+,-) provided to the sustaining electrodes 220 and the writing and sustaining electrodes 230 alternately from the outside. Electrons are emitted from the electron emission layer 260 by the high voltage (180V to 300V).

The electrons emitted from the electron emission layer 260 are reincident to the electron emission layer 260 by an electric field formed between the electrodes 220, 230, and 240, and due to the transfer of energy due to the reentry of these electrons. Secondary electrons are emitted from the electron emission layer 260.

The surface discharge occurs on the surface of the electron emission layer 260 due to the continuous generation of secondary electrons generated from the electron emission layer 260, and the penning mixed gas filled in the discharge space is discharged due to the surface discharge. Ultraviolet (Ultraviolet; hereinafter abbreviated as UV) is generated, and the generated ultraviolet rays are induced toward the front glass plate 210 by the fluorescent material coated with the background color (for example, white) of the rear glass plate 280.

Accordingly, the ultraviolet rays generated from the discharge space pass through the front glass plate 210 and pass through the RGB filter 110 thinly coated on the front glass plate 210 by the transmitted ultraviolet rays to generate the visible light of RGB to display the PDP display. By emitting to the front of the device, the desired color is displayed.

As described above, the penning mixed gas in the discharge space is discharged by the surface discharge of the electron emission layer 260 by alternating high voltage provided from the outside, and the ultraviolet rays generated by the discharge are applied to the rear glass plate 280. White visible light is generated from the coated fluorescent material, and the generated white visible light passes through the RGB filter 110 coated on the front glass plate 210 in a thin form to emit visible light of RGB.

Therefore, by using the present invention, the fluorescent material of the background color is collectively coated on the rear glass plate 280 of the PDP, and the RGB filter 110 is thinly coated on the front glass plate 210 to display colors. The manufacturing process can be simplified and the production time can be reduced, thereby improving the productivity of the PDP display device.

Claims (1)

Surface discharge is generated from the electron-emitting layer 260 due to the alternating high voltage provided from the outside, and gas in the discharge space is discharged. In the cell structure of the PDP formed so as to display color by transmitting, The fluorescent material is a white fluorescent material, and visible light generated from the fluorescent material is transmitted through the front glass plate coated with the RGB thin filter, cell structure of the PDP for color display.