KR20000044618A - Plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel is provided to prevent error discharge occurred in the division point between upper and lower blocks of the panel and simplify the fabrication process by alternately disposing data electrodes corresponding the two blocks and preventing/assuring cross talk/insulation between the data electrodes. CONSTITUTION: A plasma display panel comprises first and second blocks consisted by dividing plural sustain/select electrodes. The data electrodes of the first and second blocks are alternately arranged each other. The sustain/select electrodes consist of X/Y electrodes disposed to be crossed to data electrodes disposed between barrier ribs.

Description

Plasma display panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to flat panel displays, and more particularly to plasma display panels (PDPs).

PDP is a device that displays characters or images by using light emitted from plasma generated during gas discharge, and is also called a gas discharge display device. PDP is a direct current (DC) type and the electrode is covered with dielectric because conduction current flows directly through the electrode because the electrode used to apply the external voltage to form the plasma is directly exposed to the plasma. It is classified into AC type, in which displacement current flows due to direct exposure. In addition, depending on the electrode structure of the discharge cell, it is classified into a counter discharge type, a surface discharge type, a barrier rib discharge type, and the like. In the case of directly using the visible light emitted from the discharge gas, it is used in a monochromatic display PDP device. There is an orange PDP from Ne gas, and when full color display is required, ultraviolet light emitted from discharge gas such as Kr or Xe is red (R), green (G) and blue (B) phosphor. Using the visible light to excite the. However, there are still problems such as low brightness and contrast ratio, high driving voltage, high power consumption efficiency, low power consumption efficiency, and difficult manufacturing process due to large size, and low production yield. I have a problem to do.

In driving the PDP, the PDP is divided into a reset section, an addressing section, and a sustain section, and the actual brightness is determined as the sustain section.

By the way, since the time of one frame is limited in the driving and the selection section occupies a considerable time, it is difficult to sufficiently maintain the holding section. As a result, the PDP has a higher luminance than the cathode ray (CRT). Falling is causing problems.

In the case of 256 gradations, the PDP has 8 initialization sections, 8 selection sections, and 8 maintenance sections within one frame time (16.7 ms). In the dual selection section, if the selection pulse width is 3 s, the first selection section is 3 x 480 s, which is approximately 1.5 ms. Since one frame has 8 selection sections, about 12ms is used in the selection section. In this way, about 69% is given to the selection section within one frame, and the maintenance section for determining the luminance is less than 30%. However, since the PDP tends to increase in proportion to the length of the sustain section, the reduction of the sustain section means a decrease in brightness.

Recently, in order to solve this problem, a panel has been proposed to reduce the address section and increase the sustain section by driving the panel into two blocks.

1 is a schematic diagram showing the layout of a three-electrode PDP according to the prior art, with a PDP having a front plate of 480 lines each consisting of an x electrode (holding electrode) and a y electrode (selection electrode). It consists of a data electrode (address electrode) disposed between the electrode and the partition wall of the back plate, and the x electrode / y electrode of 480 lines is divided into blocks of lines 1 to 240 and blocks of lines 241 to 480, respectively. It is connected to the data electrode and driven to be separated.

In this way, if the panel is driven by separating the upper and lower parts, the upper and lower blocks of the panel can be selected at the same time, so that the selection section can be reduced to 1/2. That is, by simultaneously applying a selection pulse to lines 1 and 241 and applying data values to the data electrodes of each block, it is possible to select two lines at the same time. Of course, the data values corresponding to each block are stored separately in the input / output buffer.

When the PDP is driven in this manner, the luminance time is improved because the time that has been given about 30% of the selection period increases to 60%.

However, there is a problem that the discharge may be caused at the separation point (A) of the panel separated up and down, and for the same reason to prevent crosstalk between the data electrodes of the upper and lower blocks at the separation point (A) of the separated panel. It is pointed out that the process becomes difficult in order to ensure reliable insulation.

An object of the present invention is to provide a plasma display panel that can prevent the erroneous discharge caused by the separation point when driving to separate the upper and lower blocks of the panel, and can facilitate the manufacturing process.

1 is a schematic diagram showing the layout of a three-electrode PDP according to the prior art with respect to the electrode;

Figure 2 is a schematic diagram showing the layout of a three-electrode PDP in accordance with an embodiment of the present invention the center of the electrode.

* Explanation of symbols for the main parts of the drawings

A, B; Split point

The problem of the prior art is that when the panel is divided into two blocks, the upper and lower blocks, and the upper and lower blocks are simultaneously selected and driven to reduce the selection period to 1/2, mis-discharge may be caused at the separation point. Accordingly, the present invention maintains the basic structure that separates the panel into upper and lower blocks by disposing the data electrodes corresponding to the two blocks with each other, thereby preventing mis-discharge at the separation point. This arrangement makes it easy to prevent crosstalk between the data electrodes of the upper and lower blocks and ensure insulation, thereby facilitating the manufacturing process. The technical idea of the present invention can be applied to a case where two or more blocks are separately driven.

In order to achieve the above technical problem, a characteristic plasma display panel provided from the present invention is a plasma display panel configured by separating a plurality of sustain / selection electrodes into first and second blocks. The data electrodes of the second block may be arranged to be offset from each other.

Hereinafter, preferred embodiments of the present invention will be introduced in order to allow those skilled in the art to more easily implement the present invention.

2 is a schematic diagram illustrating a layout of a three-electrode PDP in accordance with an embodiment of the present invention with reference to the center thereof.

The PDP consists of 480 lines of front plate electrodes (transparent electrodes / bus electrodes) consisting of x electrodes and y electrodes, respectively, and data electrodes (address electrodes) disposed between the partition walls of the back plate, and 480 lines of x electrodes / y. The electrodes are divided into upper blocks of line 1 to line 240 and lower blocks of line 241 to line 480, respectively, and are connected to each data electrode and driven separately.

At this time, the data electrodes corresponding to each of the upper and lower blocks are arranged to be offset from each other at the separation point B.

By simultaneously applying a selection pulse to lines 1 and 241 and applying data values to the data electrodes of each block, it is possible to select two lines at the same time. Of course, the data values corresponding to each block are stored separately in the input / output buffer. In this way, if the panel is driven by separating the upper and lower parts, it is possible to reduce the selection section to 1/2 so that the holding section can be doubled. Since the PDP tends to increase in proportion to the length of the sustain section, the brightness characteristic of the PDP can be improved due to the increase in the sustain section.

In addition, since the data electrodes corresponding to each of the upper and lower blocks are deviated from each other at the separation point B, erroneous discharge can be prevented, and an additional step that has been performed to prevent erroneous discharge can be omitted. Can be simplified.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

The present invention described above has the effect of preventing the mis-discharge caused by the separation point, while maintaining the advantage of securing the luminance characteristics by doubling the holding interval as it is, and also the effect of reducing the difficulty of the PDP manufacturing process There is.

Claims (2)

A plasma display panel comprising a plurality of storage / selection electrodes separated into first and second blocks. And the data electrodes of the first block and the data electrodes of the second block are disposed to be offset from each other. The method of claim 1, The holding / selecting electrode, And an X / Y electrode disposed to intersect with the data electrode disposed between the partition walls.