JPS58163130A - Plasma display panel - Google Patents

Abstract

PURPOSE:To stabilize the transition operation of an address cell, prevent the deterioration of an input electrode, enhance the reliability and display quality of a display panel and realize a large capacity panel of fine pitch. CONSTITUTION:On an insulating substrate 1, a stripe-shaped transition electrode 3 with a dielectric film 2, a keep-alive electrode 4 and an input electrode 5 whose surface are formed by means of a thick film technique. Also, by photoetching or the like, a transition electrode 9 with a dielectric film 8, a keep- alive electrode 10, an erasing electrode 11 whose surface is exposed, and also 2nd display electrode 13 with a dielectric film 12 on one side are formed one side of an insulating plate 7 where openings 6 are disposed. On the other hand, a transparent electrode where SnO2, Sb are evaporated on an insulating substrate 15 is used for 1st display electrode 14 on a display surface side which is coated with a dielectric film 16. These three kinds of insulating substrates are forced to face each other through a spacer 17, inert gas is therein, the external periphery is hermetically sealed with a sealing glass 18, and a display cell 19 and an address cell 20 are thus obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plasma display panel (hereinafter abbreviated as FDP), and particularly to a large-capacity FDP.

Display panels that utilize gas discharge, known as FDPs, have been put into practical use as large-area flat display devices, and are expected to become even larger in area and capacity as they play a role in novel terminal equipment. is held.

On the other hand, in order to realize such a large-capacity FDP, it is necessary to avoid the reduction in brightness and non-uniformity that accompanies the increase in capacity, to be able to configure pixels with fine pixels to make the equipment more compact, and to make the driving circuit as possible as possible. It has become a major technical problem to reduce the cost of the display device including the drive circuit by reducing the number of display devices.

In general, AC refresh type PDPs have excellent features such as being able to configure pixels with a fine pitch, stable operation and long life, and simple driving circuitry. However, since driving is a method of time-dividing all pixels and selectively applying voltage to make the desired pixels emit light, as the number of pixels increases, there are drawbacks such as an increase in the number of drive circuits and a decrease in brightness. I have it. This drawback makes it difficult to quantify each dog in the display.

On the other hand, AC memory type FDPs and self-selected FDPs have a feature that display brightness does not depend on the number of pixels, and there is a possibility that a large display capacity 1 PDP can be provided. However, the memory function of an AC memory type PDP can only be obtained by controlling the electric charge generated by gas discharge for each pixel. Therefore, AC memory type FDP is
Since the number of complicated drive circuits corresponding to the number of pixels is required, the writing and erasing operations of display signals to each pixel inevitably become unstable.

On the other hand, self-shift type PDPs use a method in which display signals are injected as excess ions or electrons from an external circuit, and are written by sequentially shifting the discharge in the pixels, relying on a single pole connected in multiple phases. Because of this, the operation is stable and the number of driving circuits can be significantly reduced compared to other PDPs. However, during display, the pixel size becomes smaller compared to the pitch, making it difficult to see the display pattern due to the fact that the discharge is kept flowing within the pixel, which is made up of several shift electrodes. It has its drawbacks.

The present invention is advantageous in that the charge transition type FDP in which excess ions or electrons are injected to transfer charges at the transition electrode as described above has a charge shift speed of about 2000 characters/second, so that the address time from peripheral devices is reduced. The purpose of this is to realize a large-capacity FDP by combining the characteristics of being short and emitting high-intensity light over the entire surface of the electrodes of an AC type PDP.

According to the present invention, a plasma display panel is composed of an address cell, an address electrode, a display cell and a display electrode covered with a dielectric, and the address cell is discharged and positive charges or electrons are transferred to the address cell. A pair of display electrodes is charged and held in the display cell, and positive frost, charges, or electrons are transferred to the display cell, and an alternating current voltage is applied to induce a discharge in the display cell, and the discharge is sustained. In the plasma display panel characterized by the above, first and second electrodes are disposed in a display cell and are covered with a dielectric film, and the first and second electrodes are arranged in a display cell and covered with a dielectric film and are offset from each other or are covered with a dielectric film in an address cell. A transition electrode formed on the same plane, an input electrode for injecting positive charge or electrons into the transition electrode, an erase electrode for expelling the injected charge or electrons from the transition electrode, and charge due to discharge.

It comprises a keep-alive electrode for pre-exciting the addressing cells with electrons and light, and an insulating plate having an opening for spatially coupling each display cell and the addressing cell, and the opening There is obtained a plasma display panel characterized in that the electrodes and the transition electrodes are provided at opposing positions with a display cell and an address cell separated from each other.

Next, the operating principle of the present invention is explained by a schematic diagram of electrode connection (Fig. 1),
This will be briefly described using the timing diagram (Fig. 2) of the applied voltage waveform.

First, a positive charge corresponding to an even-numbered display cell (or an odd-numbered display cell; for convenience, the number of display cells is assumed to be 20 in this explanation) of the display signal from the input electrode is transferred to the transition electrode A. Transition to.

This guy, the other four phase transition electrodes A, ~A, n, B, ~B!
n.

Using CI"'-C!n and DI"D2n, the positive charge and the charge are sequentially transferred. This input and transition operation is performed sequentially at the timing shown in FIG. 2, and the transition electrodes D1 to D
! Transition the even-numbered information of the display cell to n, then apply the omission pulse WE to the display cell, and at the same time change the positive charge on transition electrodes D1 to D and n in the address cell to display. Transfer to cell. At this time, AC voltage pulse S
The display cell to which is applied is transition frost, extreme, ~D1n
Only the cells that have received a positive charge from -6= emit discharge light, and the other cells do not emit light.

In addition, the display cell carrying light can continue to maintain discharge light emission by alternating current to pressure S.

Next, the information of the odd-numbered display cells is input to the transition electrodes B1 to B, n according to the above method, and a filling pulse W is generated.

By writing the display information into the display cells, it is possible to write display information into all the display cells and cause them to emit light.

FIG. 3 shows an embodiment of the present invention based on the above operating principle. This example will be explained in detail below. A striped transition electrode 3 having a dielectric coating film 2 on an insulating substrate 1, a keep-alive electrode 4, and an input electrode 5 with an exposed electrode surface are formed using a thin film technique such as a vacuum evaporation method or a thick film using a silk screen printing method or the like. Formed using technology. In addition, an insulating plate 70 with openings 6 formed by photo-etching or the like, a transition electrode 9 having a dielectric coating film 8 on one side, a keep-alive electrode 10 and an erasing type 5-electrode 11 with a wire on the electrode surface, and one side thereof. A second display electrode 13 having a dielectric coating film 12 was formed in the same manner as described above. - The first display electrode 14 on the actual display surface side is placed on the insulator substrate 15.
A transparent electrode on which nO, Sb was vapor-deposited was used and covered with a dielectric coating film 16.

The 3 m long insulating substrates produced as described above are placed facing each other with a spacer 17 in between as shown in FIG.
And an address cell 2o was obtained.

The display panel according to the present invention thus obtained has display cells 1 on all the transition electrodes 3 disposed on the insulating substrate 1.
The display cell 19 and the address cell 20 are separated by an insulating plate 7 provided with an opening 6 for spatially connecting the display cell 19 and the address cell 2o, and the display cell 19 and the address cell 20 are arranged three-dimensionally. It has a laminated shape. Therefore, external electrode type cells with high brightness and excellent reliability can be used for display, and the transition operation of address cells can be stabilized and input electrodes can be prevented from deteriorating. As a result, we were able to realize a fine-pitch, large-capacity panel with high reliability and display quality.

In addition, another embodiment shown in FIG. 4, Transition! It goes without saying that a device in which the poles are formed on the same plane also has the same operating principle as described above and has the same effect. The numbers are the same as in Figure 3. In the explanation of the principle and the examples, only positive charges were explained as the charges to be controlled, but it goes without saying that the same effect is expected when controlling electrons.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of electrode connection according to the present invention, FIG. 2 is a timing diagram of applied voltage waveforms according to the present invention, FIG. 3 is a cross-sectional view of a display panel according to the present invention, and FIG. 4 is a diagram showing another example of the present invention. FIG. 3 is a cross-sectional view of a display panel according to one embodiment. In the figure, 1, 15... insulator substrate, 3
゜9...Transition electrode, 4,10...Keep alive electrode, 5...Input electrode, 6...
...Opening according to this patent, 7...Insulating plate, 2,8
, 12.16... group/dielectric coating film, 11...
erase! Pole, 13...Second display electrode, 14.
...First display electrode, 17... Space
9- -S, 18...Ceiling glass, 19...Mark/display cell, 20...Old address cell. 10-

Claims (1)

[Claims] A plasma display panel includes an address cell and an address electrode, and a display cell and a display electrode that are in contact with a dielectric material, and discharges the address cell and directs positive charges or electrons to the address cell. 1. The positive charge or electrons are filled and held in the display cell, and the positive charges or electrons are moved to the display cell, and an alternating current voltage is applied to the display electrodes to induce discharge in the display cell. In a plasma display panel which maintains a transition electrode formed offset or coplanar; and an insulating plate having an aperture spatially coupling each of the display cells and the address cell, and the aperture is connected to the first electrode. A plasma display panel characterized in that the transition electrode is provided at a position facing each other with a separation between the display cell and the address cell.