JPH08115679A - Dc plasma display panel - Google Patents

Abstract

PURPOSE: To secure stable high-speed responsiveness and to provide a display panel having a high opening ratio by forming one picture element from three display discharge cells. CONSTITUTION: Three display discharge cells 4A, 4B, 4C, which together form one picture element, and an auxiliary discharge cell 5 are defined by a cell barrier 3 formed on a back plate 2. A discharge is caused in each cell 4A to 4C by application of voltage between a cathode 11 and a display anode 22, and each discharge cell 4A to 4C utilizes a generated ultraviolet ray to cause a predetermined phosphor to emit light, so that a full-color image is displayed through a front plate 1. Meanwhile, an auxiliary electrode 21 supplies charged particles that trigger the discharge to the cells 4A to 4C through a priming space 7. Therefore, stable high-speed responsiveness is secured, and the opening ratio is substantially increased, so that a panel of high luminance can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC type plasma display panel (hereinafter referred to as PDP) which is a self-luminous flat display panel utilizing gas discharge.

[0002]

2. Description of the Related Art In recent years, research on colorization of flat displays has been actively conducted, but PDPs are regarded as the most promising as large-sized ones. DC type PD
Since P has a simpler structure than the AC type PDP and is relatively easy to manufacture, it has been noted as being extremely advantageous for increasing the size. Furthermore, a type that effectively utilizes the priming effect from the auxiliary discharge cells has been proposed.This type has an extremely high-speed response without impairing the image quality, and recently, a high-gradation full-color display. Has also been realized.

FIG. 3 shows an example of the structure of such a DC type PDP. In this DC type PDP, a cathode 34 common to a pair of auxiliary discharge cells 32 and display discharge cells 33 provided on a back plate 31 and a display anode 3 provided on a front plate 35 are provided.
6, discharge cells for each pixel, which are provided with the auxiliary anode 37 and the phosphor screen 38, are arranged in a matrix. And
By constantly applying a discharge sustaining pulse train having a constant cycle and pulse width between the electrodes of each display discharge cell 33, the pulse discharge train once started can be maintained until the erase pulse is applied. ing. Here, by causing the auxiliary discharge prior to the first display discharge, the display discharge cell 33 adjacent to the auxiliary discharge cell can generate discharge extremely rapidly and stably.

[0004]

DISCLOSURE OF THE INVENTION DC type PDP described above
In order to secure a high-speed response, the priming effect by the auxiliary discharge is indispensable, but the display discharge cell needs to be arranged adjacent to the auxiliary discharge cell in order to ensure the priming effect. Therefore, in order to make all the display discharge cells adjacent to the auxiliary discharge cells, a square array structure in which four display discharge cells constitute one pixel has been conventionally used. However, since one pixel is composed of three colors of red, green, and blue, one of the four display discharge cells has the same color as any of the other colors. It is necessary to adjust and turn on the light, which causes a problem that a substantial aperture ratio is lowered.

The present invention has been made to solve the above problems, and an object of the present invention is to secure a stable high-speed response and, at the same time, to provide a DC with a high aperture ratio.
Type PDP.

[0006]

In order to achieve the above object, a DC type PDP of the present invention is provided with a plurality of electrodes on a front plate and a rear plate and arranged so that both substrates are parallel to and face each other. By being provided, a DC type having a plurality of discharge cells as display elements provided between the both substrates and performing lighting display using auxiliary discharge cells provided adjacent to the display discharge cells The plasma display panel is characterized in that one display pixel is composed of three display discharge cells. At least one of the three display discharge cells forming one pixel may have a different shape from the other display discharge cells.

[0007]

In the DC type PDP of the present invention having the above-mentioned structure, the shapes of the three display cells can be arbitrarily selected, so that it is suitable for the arrangement of three colors of red, green and blue in one pixel from the viewpoint of brightness adjustment. What is obtained, and the substantial aperture ratio of the display discharge cell can be increased.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a DC type PDP according to the present invention, which is a cross sectional view taken along a plane crossing a cell barrier.
2 is a vertical sectional view corresponding to XX of FIG. 1, and FIG. 3 is a vertical sectional view corresponding to YY of FIG.

As shown in the figure, this DC type PDP is composed of two plates, a front plate 1 and a rear plate 2, and a cell barrier 3 formed on the rear plate 2 forms three displays forming one pixel. Discharge cells 4A, 4B and 4C and linear auxiliary discharge cells 5 are defined on both sides thereof. In this embodiment, the vertically long display discharge cells 4A and 4B are arranged side by side so that their long sides are in contact with the auxiliary discharge cells 5, and the horizontally long display discharge cells 4C have both short sides thereof as the auxiliary discharge cells 5. It is arranged so that it touches.

As shown in the pattern diagram of FIG. 4, linear cathodes 11 are arranged on the front plate 1 at positions crossing the display discharge cells 4A and 4B and the display discharge cells 4C, respectively. On the other hand, on the back plate 2, a linear auxiliary anode 21 is arranged in the auxiliary discharge cell 5, and three linear display anodes 22 are arranged so as to pass through the display discharge cells 4A, 4B, 4C, respectively. Each display anode 22 is connected to the display discharge cell 4
In A, 4B, and 4C, it is connected to the circular discharge anode 23 via the insulating layer 6. Further, on the cathode 11 side of the cell barrier 3, a position shown by a horizontal dotted line in FIG. 1, that is, one side of the vertically long display discharge cells 4A and 4B and a horizontally long display discharge cell 4C.
A priming space 7 is provided on each of the two sides.

In this DC type PDP, when a predetermined voltage is applied between the cathode 11 and the display anode 22, the discharge display cell 4
A discharge is generated in A, 4B, and 4C, and each discharge display cell 4A, 4B, and 4C emits a predetermined phosphor by the ultraviolet rays generated by this discharge, and this light emission is radiated to the outside through the front plate 1. Full-color image display is performed. In this case, the auxiliary anode 5 supplies the display discharge cells 4A, 4B, 4C with charged particles serving as a discharge pilot light through the priming space 7.

The cathode 11 provided on the front plate 1 is, as shown in the pattern diagram of FIG. 5, discharge display cells 4A, 4B.
And the display discharge cells 4C are formed on the cell barrier 3 which is divided into upper and lower parts, and further from each of the discharge display cells 4A, 4B, 4C.
You may make it the shape extended in the shape of a branch toward the inside.

Further, as shown in the pattern diagram of FIG.
It is also possible to arrange the three discharge display cells 4A, 4B, 4C forming the pixel in opposite directions with the auxiliary anode 21 interposed therebetween. In this case, the discharge display cells 4A, 4B and the display discharge cell 4C are arranged as shown in the drawing. The cathode 11 may be arranged on the cell barrier 3 which is divided into upper and lower parts, and the transparent electrode 11 a may be formed so as to be opposed to each discharge anode 23.

In each of the above-mentioned embodiments, the vertically long display discharge cells 4A and 4B and the horizontally long display discharge cells 4C may have the same shape or different shapes in view of the balance of luminance. Alternatively, the vertically long display discharge cell 4A,
4B and the horizontally long display discharge cell 4C may be reversed. Further, the horizontally long display discharge cells 4C may be slightly displaced so as not to be arranged linearly.

[0016] Also, to prevent the same color from being aligned,
The colors assigned to the display discharge cells 4A, 4B, 4C may be changed for each column.

[0017]

As described above, the DC type P of the present invention is used.
With regard to the DP, since attention is paid to the priming effect and the shape and arrangement of the display discharge cells so that one display pixel is composed of three display discharge cells, stable high-speed response is ensured, and at the same time, from the viewpoint of brightness adjustment, It is possible to obtain a panel that is suitable for three color schemes of green and blue, and further increase the aperture ratio to produce a panel having higher brightness than conventional panels.

[Brief description of drawings]

FIG. 1 shows an embodiment of a DC type plasma display panel according to the present invention and is a cross-sectional view taken along a plane crossing a cell barrier.

FIG. 2 is a vertical cross-sectional view corresponding to XX in FIG.

FIG. 3 is a vertical cross-sectional view corresponding to YY of FIG.

FIG. 4 is a pattern diagram showing the arrangement of cathodes provided on the front plate.

FIG. 5 is a pattern diagram showing another example of different arrangement.

FIG. 6 is a pattern diagram showing an example in which the arrangement of display discharge cells is changed.

FIG. 7 is a cutaway perspective view showing a part of a conventional DC type plasma display panel.

[Explanation of symbols]

 1 Front Plate 11 Cathode 2 Back Plate 21 Auxiliary Anode 22 Display Anode 23 Discharge Anode 3 Cell Barrier 4A, 4B, 4C Display Discharge Cell 5 Auxiliary Discharge Cell 6 Insulating Layer 7 Priming Space

Claims (2)

[Claims] 1. A front plate and a back plate are provided with a plurality of electrodes, and both substrates are arranged in parallel and opposite to each other, whereby a plurality of display elements provided between the two substrates are provided. DC having discharge cells and performing lighting display by using auxiliary discharge cells provided adjacent to the display discharge cells
Type plasma display panel, wherein one display pixel is composed of three display discharge cells. 2. The DC type plasma display panel according to claim 1, wherein at least one of the three display discharge cells forming one pixel has a different shape from other display discharge cells.