JPH0689667A - Plasma display panel - Google Patents

Abstract

PURPOSE: To make it appropriate for high resolution, by arranging a cathode and a 1st maintenance electrode flush with a capacitive coupling, and by using a positive electric charge, which is adhered in an addressing electric discharge to the dielectric on the surface of the cathode, to the next maintenance electric discharge. CONSTITUTION: An anode 11 is formed on an upper board front glass 10, and a first maintenance electrode 13 is formed in a board state on a rear glass 12 of an lower board. An insulator 14 is applied on the first maintenance electrode 13. A cathode 15 is arranged on the insulator 14 so that it is at right angles to the anode 11. The insulator 14 is applied to the cathode 15, and the second maintenance electrode 16 that is formed between the anode 11 and the cathode 15 is arranged in a stripe state to the cathode 15 and be covered with the insulator 14. The structure of the first maintenance electrode 13 may be arranged in a stripe state in parallel to the cathode 15.

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, and more particularly to a plasma display panel having four electrodes.

[0002]

2. Description of the Related Art FIG. 1A shows the structure of a conventional plasma display panel disclosed by Samsung Electric Tube Co., Ltd. (US Pat. No. 5,004,950).

In FIG. 1A, the auxiliary discharge electrode 6'is provided in the partition wall 3, and an AC voltage can be applied to the auxiliary discharge electrode 6'to use the auxiliary discharge electrode 6'as a sustain electrode. In this case, a method in which direct current discharge is generated between the anode 1 and the cathode 4 to form charged particles, and the charged particles are charged on the surface of the auxiliary discharge electrode 6'to form wall charges to cause alternating current discharge must be adopted. I don't get.

The above method is different from the conventional AC type plasma display panel in that a wall charge is immediately formed in the addressing discharge and the space charge generated by the discharge is used for the sustain discharge. The operating margin is small and the efficiency is low.

FIG. 1B shows the structure of a conventional plasma display panel disclosed by Thomson (EP 0.
357485 A1).

In FIG. 1B, as a three-electrode AC plasma display panel, a data signal is applied to the anode X, a sustain waveform and a scan waveform are applied to the cathode Y, and a sustain waveform is applied to the sustain electrode E. Since the driving circuit for driving the cathode simultaneously performs the addressing and the sustain discharge, the following problems occur.

First, the cost of the cathode driving circuit is higher than that of an element that is switched in only one direction such as in a normal DC type plasma display panel.

Second, since the AC type plasma display panel is a memory type, the duty of light emission is long and the cathode driving circuit may be destroyed by heat. In the case of a normal switching element, it is often damaged by heat even when a rated current is passed, and in the case of a package, a heat sink is not attached, which is serious.

Thirdly, since the sustain electrodes and the cathodes are alternately arranged on the same plane, there is a limit to widen the electrode area and increase the luminous efficiency, which is unsuitable for high resolution.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to arrange the cathode and the first sustain electrode on the same plane for capacitive coupling so as to maintain the + charge adhering to the dielectric on the cathode surface during addressing discharge as follows. An object of the present invention is to provide a plasma display panel that can be smoothly used for discharge.

[0011]

In order to achieve the above object, the structure of the plasma display panel of the present invention has an upper plate including an anode formed in a stripe shape and a first sustain electrode formed in a plate shape. A first insulating layer coated on the first sustain electrode, a cathode formed on the first insulating layer so as to be orthogonal to the anode, and a second insulating layer coated on the cathode. It is characterized in that it has a formed lower plate and a second sustain electrode coated with an insulator formed between the upper plate and the lower plate so as to be arranged in a direction parallel to the cathode.

[0012]

According to the present invention, the cathode of the plasma display panel and the first sustain electrode are arranged on the same plane by capacitive coupling so that (+) charges attached to the dielectric on the surface of the cathode during the addressing discharge are used for the next sustain discharge. To use.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 2A to 2C are sectional views of plasma display panels according to the present invention.

In FIG. 2A, an anode 11 is formed on the upper glass front glass 10, a plate-shaped first sustain electrode 13 is formed on the lower glass rear glass 12, and an insulator 1 is formed on the first sustain electrode 13.
4 is applied, and the cathode 15 is formed on the insulator 14 by the anode 1
1. The insulators 1 are arranged on the cathode 15 at right angles to each other.
The second sustain electrodes 16 formed by coating 4 are formed between the anode 11 and the cathode 15 so as to be alternately arranged with the cathode 15 in a stripe shape and covered with the insulator 14. Here, the second sustain electrode 16 may be formed on the front surface, the rear surface, or separately.

2B, unlike the structure of FIG. 2A, the structure of the first sustain electrode is arranged in parallel with the cathode 15 in a stripe shape.

In FIG. 2C, the area of the second sustain electrode 16 is reduced by half.

3A to 3C are shown in FIGS. 2A to 2C.
3 is a plan view showing an electrode arrangement of second sustain electrodes shown in FIG.

In FIG. 3A, the second sustain electrode is formed in a plate shape in parallel with the cathode and the anode.

In FIG. 3B, the second sustain electrode is formed parallel to the cathode, but is also parallel to the anode but is not connected between them.

FIG. 3C shows that the cathode and the cathode are arranged in a stripe shape.

Although not shown, the anodes may be arranged in a stripe shape.

A method of manufacturing the structure shown in FIG. 2A will be described below for the sake of easy understanding.

The first sustain electrode 13 is formed on the rear glass substrate 12.
Is formed, the dielectric 14 is formed, the cathode 15 is formed, the dielectric 14 is formed thereon, and after firing at a temperature of 580 ° C., the MgO layer is vacuum-deposited thereon.

The anode is vacuum-deposited on the front glass substrate and then photo-etched or printed. The second sustain electrode is installed on the front or rear glass by a normal printing method. Alternatively, the second sustain electrode is independently manufactured and sandwiched between the front glass and the rear glass. Subsequent manufacturing steps are the same as those of a normal plasma display panel manufacturing method.

4A through 4E are operation sequence diagrams for explaining the operation of the plasma display panel according to the present invention.

FIG. 4A is for explaining the writing operation.

In FIG. 4A, when a positive voltage is applied to the anode and a negative voltage is applied to the cathode to apply a voltage equal to or higher than the discharge start voltage difference, discharge starts, and (+) is applied to the upper end of the cathode.
The charge is accumulated.

In FIG. 4B, a wall voltage is formed by the accumulation of the (+) charge, and after the scanning is completed, the scan electrode is floated and the potential of the first sustain electrode is raised, so that the (+) of the dielectric layer is formed. The wall potential is added to the sustain voltage to increase the potential of the charge. When the capacitor is charged with electric charge, floating is applied and a voltage of 100V is applied in the opposite direction to the charging, the other potential becomes the capacitor charging voltage + 100V.

In FIG. 4C, a wall voltage is applied to the sustain voltage to cause a discharge between the first sustain electrode and the second sustain electrode, and electrons are accumulated in the first sustain electrode and ions are accumulated in the second sustain electrode. I can keep it. In this way, another wall voltage is formed on the sustain electrode.

In FIG. 4D, a sustain voltage in the opposite direction to that shown in FIG. 4C is applied, and wall voltages in the opposite directions are formed and maintained at the first sustain electrode and the second sustain electrode.

A negative voltage is applied to the second sustain electrode to increase the wall voltage generated by the discharge.
Apply a positive voltage to the sustain electrodes.

In FIG. 4E, by applying a negative pulse to the cathode in a short time, a short discharge occurs between the cathode and the sustain electrode, and the wall charge disappears. In this way, the entered data is erased.

[0033]

Therefore, in the structure of the plasma display panel according to the present invention, the price of the cathode driving circuit is low and it is suitable for high resolution.

[Brief description of drawings]

FIG. 1A shows a structure of a conventional plasma display panel disclosed by Samsung Electric Tube Co., Ltd. Figure 1
B shows the structure of a conventional plasma display panel disclosed by Thomson.

2A to 2C show a structure of a plasma display panel according to an embodiment of the present invention.

FIG. 3A None FIG. 3C shows various configurations of the sustain electrodes shown in FIGS. 2A to 2C.

4A to 4E are views for explaining the operation of the plasma display panel according to the present invention.

[Explanation of symbols]

10 ... Upper plate 11 ... Anode 12 ... Lower plate 13 ... First sustaining electrode 15 ... Cathode 16 ... Second sustaining electrode

Claims (11)

[Claims] 1. An upper plate including an anode formed in a stripe shape, a first sustain electrode formed in a plate shape, a first insulating layer applied on the first sustain electrode, and the first insulation. A cathode formed on a layer so as to be orthogonal to the anode, a lower plate formed from a second insulating layer applied on the cathode, and a direction parallel to the cathode alternately between the upper plate and the lower plate. A plasma display panel, comprising: a second sustain electrode coated with an insulator formed so as to be arranged in a line. 2. The second sustain electrode coated with the insulator is integrally formed on the upper plate.
The plasma display panel described. 3. The second sustain electrode coated with the insulating material is integrally formed on the lower plate.
The plasma display panel described. 4. The plasma display panel of claim 1, wherein the second sustain electrode coated with the insulator is formed of another plate. 5. The plasma display panel of claim 1, wherein the thickness of the second sustain electrode coated with the insulator is about the space between the upper plate and the lower plate. 6. The thickness of the second sustain electrode coated with the insulator is about half of the space between the upper plate and the lower plate, and the position is inclined toward the lower plate. The plasma display panel according to claim 1. 7. The plasma display panel as claimed in claim 1, wherein the second sustain electrode is formed in parallel with the cathode and the anode. 8. The plasma display panel as claimed in claim 1, wherein the second sustain electrode is formed in parallel with the cathode and at the same time is formed in parallel with the anode, and the distance between them is separated. 9. The plasma display panel of claim 1, wherein the second sustain electrodes are arranged in stripes with the cathode. 10. The plasma display panel of claim 1, wherein the second sustain electrodes are arranged in stripes with the anode. 11. An upper plate including an anode formed in a stripe shape, a first sustain electrode formed in a plate shape, a first insulating layer applied on the first sustain electrode, and the first insulation. A cathode formed on a layer so as to be orthogonal to the anode, a lower plate formed from a second insulating layer applied on the cathode, and a direction parallel to the cathode alternately between the upper plate and the lower plate. In a method of driving a plasma display panel having a second sustain electrode coated with an insulator formed so as to be arranged in a line, a discharge is generated by applying a voltage difference of a discharge start voltage or more between the cathode and the anode. A first step of starting, a second step of increasing the discharge voltage generated in the first step, and a second step of applying a voltage difference of a sustain voltage or more to the first sustain electrode and the second sustain electrode. The third step of maintaining the discharge that has occurred in A fourth step of applying a pulse having a voltage difference greater than or equal to a sustain voltage to the sustain electrode and the second sustain electrode and having a polarity opposite to that of the third step to maintain the discharge generated in the third step; And a fifth step of applying a pulse having a narrow width to the cathode in order to erase the discharge generated in the fourth step, and a driving method for a plasma display panel.