KR20010064069A - Electrode structure of front panel of AC type plasma display panel using positive glow - Google Patents

Abstract

PURPOSE: Disclosed is a panel electrode structure for an alternating current plasma display panel capable of maintaining a discharge holding voltage and of generating a positive column discharge. CONSTITUTION: The panel electrode structure for an alternating current plasma display panel includes the first transparent electrode(21) and the second bus electrode(22). In order to operate the alternating current plasma display panel, the distance between the first transparent electrode(21) and the second bus electrode(22) is increased. An auxiliary electrode(23) is installed between the first transparent electrode(21) and the second bus electrode(22). This auxiliary electrode(23) uses a relatively low holding voltage and receives a compensative voltage in order to enhance the efficiency of positive column discharge. The auxiliary electrode(23) maintains a predetermined voltage which is smaller than a holding pulse.

Description

Electrode structure of front panel of AC type plasma display panel using positive glow}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to the field of plasma display panels (hereinafter referred to as PDPs), and more particularly, to an alternating current (AC) type PDP using positive light discharge.

In general, a PDP is a device that displays characters or graphics by using light emitted from a plasma generated during gas discharge. Plasma display panel (PDP) has the most suitable advantages for large-scale display among various flat panel displays such as liquid crystal display (LCD), field emission display (FED), and electroluminescence display (ELD), which are being actively studied.

PDP can be enlarged to 40 ˝ or larger, and CRT level colorization is possible because the ultraviolet light generated by the discharge uses a photoluminescence mechanism that emits visible light by stimulating the fluorescent film. As a self-emissive display, it has a number of unique advantages not found in other flat devices such as a wide viewing angle of 160 ° or more. Recently, interest in this has been increasing.

PDP adopts a method of applying a suitable electrode and phosphor on each substrate by using two glass substrates having a thickness of about 3 mm, and forming a plasma in the space therebetween while maintaining an interval of about 0.1 mm to 0.2 mm. As a result, it can be enlarged as a flat plate. In addition, in the PDP, the gas discharge has a strong non-linearity in which discharge does not occur even when a voltage is applied between the electrodes, and the discharge voltage is less than the discharge start voltage, and has a memory function which is an essential function for driving a large display. Even in this case, a high quality image can be expressed without deteriorating the luminance.

The PDP is a direct current (DC type) in which the electrode for generating plasma is directly exposed to the plasma so that the conduction current flows directly through the electrode, and the electrode is covered with a dielectric so that the displacement current is not directly exposed. It is divided into alternating current type (AC type).

Each of the DC Plasma Display Panel (DC PDP) and AC Plasma Display Panel (AC PDP) consists of a front panel, a back panel, and two glass substrates. A cathode is formed on the front plate of the anode, and an anode, a phosphor, a resistor, and a partition wall are formed on the back plate of the discharge plate. A discharge sustaining electrode, a bus electrode, a dielectric layer, and a protective film are formed on the front plate of the AC PDP, and an address electrode, a dielectric layer, A partition and a fluorescent layer are formed.

On the other hand, the discharge consists of a process in which electrons emitted from the protective film are accelerated by an electric field to ionize atoms, and electrons by ionization are accelerated to excite atoms. The excited atoms emit ultraviolet light and the emitted ultraviolet light is absorbed by the phosphor to emit visible light.

In general, when a glow discharge is generated between two electrodes, the discharge area can be largely divided into five areas: a negative electrode part, a negative glow, a Faraday arm part, a positive glow (positive column) and a positive electrode part. . At this time, if the two electrodes are reduced, the anode glow, the Faraday arm portion, and the cathode glow disappear in order, and the discharge disappears at a certain distance.

Typically, the amount of ultraviolet rays generated during discharge is more generated in the anode glow than the cathode glow, and the conventional plasma display panel mainly uses the cathode glow because it discharges in a small discharge gap.

Since the use of the positive pole discharge has an effect of increasing the brightness and the luminance efficiency, there is an attempt to use the positive pole discharge in the conventional AC plasma display panel, but in order to use it, it is maintained more than the conventional PDP which mainly uses the cathode glow. The distance between the electrodes should be longer.

1 shows a layout of a PDP panel configuration according to the prior art, in which an address electrode 14 is placed on a glass substrate 11 in the center between two partitions 15 for preventing the discharge of an adjacent cell. It is arranged in the same direction as the partition wall 15, two transparent electrodes 12 are disposed in a direction perpendicular to the address electrode 14, the resistance on each of the two transparent electrodes 12 The bus electrode 13 for the reduction is arranged.

In order to achieve positive light discharge by using the front plate of the AC type PDP having the structure as shown in FIG. 1, the distance between the transparent electrodes 12 should be longer than that of the conventional PDP, and the distance between the transparent electrodes 12 becomes longer. As a result, the sustain discharge voltage increases, resulting in an increase in power consumption and driving circuit manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a solar panel which can cause a solar panel discharge while maintaining a conventional discharge holding voltage.

1 is a diagram showing a layout of a PDP panel configuration according to the prior art.

Figure 2 is a view showing the front plate electrode structure of the Yangju wine panel according to an embodiment of the present invention.

3 is a voltage waveform diagram showing a voltage waveform applied to a positive pole panel having a front plate electrode structure according to an embodiment of the present invention.

* Brief description of symbols for the main parts of the drawings

20: glass substrate 21: transparent electrode

22: bus electrode 23: auxiliary electrode

In order to achieve the above object, the present invention includes a first holding electrode and a second holding electrode, and widens the distance between the first holding electrode and the second holding electrode and uses a positive light discharge to the front surface of the AC plasma display panel. In the plate electrode structure, an auxiliary electrode receiving a compensation voltage in order to increase the photovoltaic discharge efficiency while using a relatively low holding voltage between the first holding electrode and the second holding electrode is provided. Is done.

In addition, the present invention, the alternating current plasma having a first holding electrode and a second holding electrode and an auxiliary electrode capable of applying a voltage between the first holding electrode and the second holding electrode in order to cause a positive light discharge In the method of driving a display panel, the voltage of the auxiliary electrode maintains a constant voltage and is synchronized with the rising edge of the sustain pulse applied to the first holding electrode or the second holding electrode. A positive voltage pulse and a negative voltage pulse are applied successively.

Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the technical idea of the present invention. do.

2 is a view showing the structure of the front plate electrode of the Yangju wine panel according to an embodiment of the present invention.

Referring to FIG. 2, _two stripe-shaped transparent electrodes 21 made of ITO or SnO ₂ on the glass substrate 20 are formed side by side at regular intervals, and each of the upper portions of the transparent electrodes 21 is formed. The bus electrodes 22 are formed of Ag, Au, or the like.

An auxiliary electrode 23 having a width smaller than that of the bus electrode 22 is formed between the two transparent electrodes 21.

On the other hand, Figure 3 is a voltage waveform diagram showing the voltage waveform applied to the positive pole panel having a front plate electrode structure according to an embodiment of the present invention.

As shown, the X electrode pulses 31 and the Y electrode pulses 32 exhibit a conventional holding voltage having a magnitude of Vs for sustain discharge, and the auxiliary electrode pulses 33 represent the X electrode pulses 31. And the size of Vs / 2 compared to the size of the Y electrode pulse 32 and applied to the rising time of the X electrode pulse 31 and the Y electrode pulse 32.

Specifically, the auxiliary electrode pulse 33 maintains a voltage of Vs / 2 and has the same phase as the X electrode pulse 31 with the magnitude of Vs at the same time as the rise time of the X electrode pulse 31. One shot pulse having a one-shot pulse is applied, and Vs / 2 lower than the voltage of Vs / 2 which is held immediately, and one shot pulse having the same phase as the Y electrode pulse 32 is applied and then Vs again. While maintaining a constant voltage of the size of / 2 and then a one shot pulse having the same phase as the X electrode pulse 31 and the size of Vs at the same time as the rise time of the Y voltage pulse 32 is applied After the one-shot pulse having the same phase as the Y electrode pulse 32 is applied by Vs / 2, which is lower than the voltage of Vs / 2, the voltage of Vs / 2 is maintained again. The waveform is repeated with the application of the X electrode pulse 31 and the Y electrode pulse 32. Indicates.

In other words, the auxiliary electrode pulse 33 generates a voltage difference as much as Vs with the X electrode pulse 31 and also generates a voltage difference as much as Vs with the Y electrode pulse 32.

By forming the auxiliary electrode 23 between the two transparent electrodes 21 as in the embodiment of the present invention, the transparent electrode 21 and the transparent electrode 21 widened for the positive pole discharge in the sustain discharge ), That is, the discharge gap Gap is reduced, and also by applying the auxiliary electrode pulse 33 as described above, without increasing the voltage of the sustain pulse of the AC PDP according to the prior art, that is, the conventional It is possible to perform sustain discharge in the photovoltaic panel in which the gap Gab between the transparent electrodes 21 is widened while maintaining the voltage size as much as Vs.

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As the above-described electrode structure of the front panel of the photovoltaic panel according to an embodiment of the present invention, there is an effect that the sustain discharge can be performed only by the conventional discharge holding voltage compared to the distance between the transparent electrodes.

Claims (3)

In the front plate electrode structure of the AC plasma display panel having a first holding electrode and a second holding electrode, and widening the distance between the first holding electrode and the second holding electrode and using a positive pole discharge; And having an auxiliary electrode to which a compensation voltage is applied in order to increase the photovoltaic discharge efficiency while using a relatively low holding voltage between the first holding electrode and the second holding electrode. An electrode structure of a front plate of an AC plasma display panel using a positive pole discharge. A method of driving an AC plasma display panel having a first holding electrode and a second holding electrode and an auxiliary electrode capable of applying a voltage between the first holding electrode and the second holding electrode to generate a positive light discharge. To The voltage of the auxiliary electrode maintains a constant voltage, and is synchronized with the rising edge of the sustain pulse applied to the first sustain electrode or the second sustain electrode, so that the positive voltage pulse and the negative voltage with respect to the constant voltage. Applying pulses continuously AC type plasma display panel using a positive pole discharge. The method of claim 2, The constant voltage is a plasma display panel using a positive pole discharge, characterized in that the voltage having a smaller magnitude than the sustain pulse.