JPH05242811A - Plasma display panel - Google Patents

Abstract

PURPOSE:To ensure writing at a low voltage and easy drive of a panel and to provide good display quality and drive property by arranging a scanning electrode on the first insulation board in which display data is written and a maintaining electrode on an alternate basis along a board surface. CONSTITUTION:A scanning electrode on the second insulation board 2, in which display data is written by discharge to a data electrode 4 on the first insulation board, and a maintaining electrode, to which a maintaining pulse is only applied to maintain main discharge, are shifted in parallel with each other along a board surface as the first electrode group 11 and the second electrode group 12, respectively, and formed so that the edges of the electrodes may be aligned with each other in a display cell or one electrode may partially overlap with the other, to arrange both electrodes all over the surface. In this way, a large area of the scanning electrode in the cell and a big space where discharge occurs as an initiation of writing discharge are obtained, resulting in higher writing discharge probability. Stable writing of display data is therefore ensured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel used for information display devices, personal computer displays, television image displays and the like.

[0002]

2. Description of the Related Art Plasma display panels have a large capacity and a high response speed among flat display panels.
It has features such as wide viewing angle and is suitable for large area displays. In particular, the ac type plasma display panel using surface discharge has a memory characteristic advantageous for obtaining high brightness and is a highly efficient and long-life panel. A cross-sectional view of this type of panel is shown in FIG. 3, and a perspective view from an example of a display surface is shown in FIG. In FIG. 3, 1 is a first insulating substrate made of glass, 2 is a second insulating substrate made of glass, 3 is a surface discharge electrode made of a metal thin film electrode such as an Al electrode, and 4 is a data electrode made of a transparent conductive film, 5 is a discharge gas space filled with a discharge gas such as a rare gas, 6 is an insulator partition wall that is sandwiched between the first insulating substrate 1 and the second insulating substrate 2, and divides each display cell 10 shown in FIG. Further, 7 is a phosphor that emits light by ultraviolet light generated by the discharge of the discharge gas, 8 is an insulator that covers the electrode, and 9 is a protective film such as MgO that protects the insulator from gas discharge.

For driving, the surface discharge electrode electrode group 3 is composed of scan electrodes and sustain electrodes every other row, and main discharge is performed between the scan electrodes and sustain electrodes by sustain pulses.
The display data is written by superimposing a data pulse applied to the data electrode 4 and a scanning pulse applied to the scanning electrode in synchronization with this pulse, as shown in FIG. At this time, a positive pulse was applied to the data voltage and a negative pulse was applied to the sustain pulse, the write pulse and the erase pulse in order to prevent sputtering of the phosphor 7 due to discharge gas ions. Further, before writing new data, the sustain discharge is erased by applying an erase pulse having a voltage lower than the sustain pulse or a narrow pulse width to the scan electrode.

[0004]

However, in the plasma display panel having the conventional surface discharge electrode structure as described above, the writing operation of the display data is unstable, and the writing operation is performed by applying the high voltage to the data pulse. Therefore, when driving a plasma display panel having a large area and a large display capacity, there is a problem that a large number of high voltage driving circuits are required.

[0005]

According to the present invention, there is provided a first insulating substrate having a group of electrodes arranged in parallel as data electrodes, and a set for generating a main discharge for display covered with an insulating coating film. The second insulating substrate having the surface discharge electrode groups alternately arranged with the data electrode group and the surface discharge electrode group face each other at a predetermined interval so as to be orthogonal to each other, and after being airtight, sealed with a discharge gas. In the surface discharge type plasma display panel, the first plurality of electrode groups of the surface discharge electrode group are formed in parallel with the substrate surface of the second insulating substrate, and after the insulating film is laminated on the entire surface, The two electrode groups are shifted in parallel with the first electrode group along the substrate surface, and the sides of the two electrodes are aligned in the display cell, or both electrodes are formed so as to partially overlap each other. It is characterized in that both electrodes are present on the entire surface of the display cell. .

[0006]

In the present invention, as shown in FIG. 1, the discharge with the data electrode 4 on the first insulating substrate 1 maintains the main discharge with the scan electrode on the second insulating substrate 2 for writing the display data. As shown in FIG. 1, the sustain electrodes to which only the pulse is applied are alternately arranged as the first electrode 11 or the second electrode 12 with respect to the surface of the substrate to reduce the scan electrode area for writing the display data. It can be made large enough in the cell. As a result, it is possible to secure a large space in which the discharge that is the ignition of the writing discharge is generated, and the probability of the writing discharge is increased, so that it is possible to write the display data stably.

[0007]

1 is a structural sectional view showing the construction of an embodiment of a surface discharge type plasma display panel to which the present invention is applied, and FIG. 2 is a perspective view from the display surface of FIG. 1 to 2
1 is a first insulating substrate made of 2 mm thick soda glass, 2 is a second insulating substrate also made of 2 mm thick soda glass, and 3 is a first electrode and a second electrode made of a 2 μm thick Al thin film. Group of surface discharge electrodes, 4 are data electrodes which are also transparent NES electrodes, and 5 are 200T at total pressure
A discharge gas space 6 filled with a discharge gas of He mixed with 4% Xe at orr, 6 is an insulator partition that is sandwiched between the first insulating substrate 1 and the second insulating substrate 2, and divides each display cell 10. Is.

As is clear from comparison between FIG. 1 and FIG. 3, in the present invention, the main electrode and the scan electrode on the second insulating substrate 2 for writing the display data by the discharge with the data electrode on the first insulating substrate are maintained. By alternately arranging the sustain electrodes for applying only the sustain pulse on the substrate surface like the first electrode group 11 and the second electrode group 12, the scan electrode area which becomes the cathode when the display data is written Can be made sufficiently large in the cell. In the case of arranging them in a line as shown in FIG. 3, since it is necessary to secure a discharge gap, it is not possible to widen the area of the scan electrodes without disturbing the main discharge in order to facilitate writing of display data. Can not.
However, according to the present invention, as shown in FIG. 1, when the scan electrode and the sustain electrode are either the first electrode 11 or the second electrode 12, the area of the scan electrode which becomes the cathode during the writing discharge is increased as much as possible. It was possible to suppress the influence on the main discharge to the minimum and to write the stable display data. In addition, the emission of the phosphor, which has conventionally leaked from the discharge gap 13 to the opposite side of the display surface, is reflected by the surface discharge electrode group 3 to have an effect of increasing the display brightness. 7 is Zn which emits light by the ultraviolet light generated by the discharge of the discharge gas.
₂ SiO ₄ : Mn phosphor, 8 is an insulator made of transparent glaze with a film thickness covering the electrodes, and 9 is a 2 μm thick MgO protective film for protecting the insulator from gas discharge.

Further, in the above structure as shown in FIG. 1, the first insulating substrate 1 side is the display surface. On the other hand, the structure shown in FIG. 6, which is another embodiment of the present invention, is the same. When formed and the data electrode group 4 is formed of an Al thin film, the display surface is on the side of the first insulating substrate. Even in this case, it was possible to improve the write discharge probability by increasing the scan electrode area.

[0010]

As is apparent from the above description, the scanning electrodes on the first insulating substrate for writing the display data according to the present invention,
By alternately arranging the sustain electrodes that apply only the sustain pulse that maintains the main discharge with the scan electrodes with respect to the substrate surface,
The display data can be written at a low voltage, and the panel can be easily driven. Consequently, it is possible to provide a plasma display panel having good display quality and driving characteristics.

[Brief description of drawings]

FIG. 1 is an example of a structural cross-sectional view of a plasma display panel using the present invention.

FIG. 2 is a perspective view from the display surface of the plasma display panel of FIG. 1 using the present invention.

FIG. 3 is a structural cross-sectional view of a conventional plasma display panel.

FIG. 4 is a perspective view from a display surface of a conventional plasma display panel.

FIG. 5 is an example of a drive waveform of the plasma display panel.

FIG. 6 is an example of a structural cross-sectional view of a reflective plasma display panel that is a second embodiment using the present invention.

[Explanation of symbols]

 1 First Insulating Layer Substrate 2 Second Insulating Layer Substrate 3 Surface Discharge Electrode Group 4 Data Electrode 5 Discharge Gas Space 6 Insulator Septa 7 Phosphor 8 Insulator 9 Protective Film 10 Display Cell 11 First Electrode Group 12 Second Electrode group 13 Discharge gap 14 Trace electrode

Claims (1)

[Claims] 1. A first insulating substrate having a group of electrodes arranged in parallel as data electrodes, and a second insulating substrate having a group of surface discharge electrodes for generating a main discharge for display which is covered with an insulating coating film. A surface discharge type plasma display panel comprising a substrate and a data electrode group and a surface discharge electrode group facing each other at a predetermined interval so as to be orthogonal to each other, hermetically sealed and then sealed with a discharge gas. Among them, the first electrode group is formed parallel to the substrate surface of the second insulating substrate, the insulating film is laminated on the entire surface, and then the second electrode group is formed on the substrate surface with respect to the first electrode group. It is characterized in that the electrodes are arranged parallel to each other, and the electrodes are formed so that the sides of the electrodes coincide with each other in the display cell or a part of the electrodes overlap each other, and the electrodes are present on the entire surface of the display cell. Plasma display panel.