KR100856979B1 - Plasma Display Device for Multi-screen - Google Patents

Abstract

The present invention discloses a multi-screen plasma display device in which the scan signal and the sustain signal are applied opposite to each other, thereby equalizing the influence of the resistance elements and thereby making the luminance of the entire screen uniform. In the multi-screen plasma display device according to the present invention, a plurality of plasma display panels are assembled, and each plasma display panel is configured by sealing an upper substrate having a sustain electrode, a scan electrode, and a lower substrate having an address electrode, and the scan electrodes. The sustain electrodes are connected to one common wire on the opposite side to which the scan signal of the signal is applied, so that the sustain signal is applied.

Description

Multi-Screen Plasma Display Device {Plasma Display Device for Multi-screen}

1 is a plan view showing a typical multi-screen plasma display device

2 is a plan view illustrating a wiring pattern of a scan electrode and a sustain electrode of a conventional plasma display panel;

3 is a plan view illustrating a wiring pattern of scan electrodes and sustain electrodes for each plasma display panel according to an exemplary embodiment of the multi-screen plasma display device according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen plasma display device. More specifically, a multi-screen plasma display device in which a scan signal and a sustain signal are applied opposite to each other to equalize the effect of a resistance element and thereby uniformize the luminance of the entire screen. It is about.

Recently, various flat panel display panels have been developed and commercialized. Among them, a plasma display panel, a liquid crystal display panel, an organic EL, and the like are representative.

However, these flat panel display panels are limited in implementing a large screen as a single panel. Therefore, a method of composing one multi-screen by combining several unit panels has been proposed.

In particular, the plasma display panel has a structure in which an upper substrate on which scan electrodes and sustain electrodes are formed and a lower substrate on which address electrodes are formed are sealed, and four plasma display panels A, B, C, D) can be assembled.

Each plasma display panel has a structure in which a lower substrate on which an address electrode is formed, and an upper substrate on which a scan electrode and a sustain electrode are formed are sealed and bonded to each other. The upper substrate has a scan electrode 14 and a sustain electrode 16 as shown in FIG. 2. Is formed.

That is, the conventional plasma display panel has a structure in which scan signals and sustain signals applied from the scan driving circuit and the sustain driving circuit are respectively applied at the same position.

However, since the scan signal and the sustain signal have a larger resistance as they move away from the scan driving circuit and the sustain driving circuit, signal loss occurs, thereby causing a problem in that luminance varies for each of P1, P2, and P3 positions.

For example, the luminance is changed to 210 Cd / m 3 at P1, 190 Cd / m 3 at P2 and 160 Cd / m 3 at P3.

 An object of the present invention is to equalize the luminance across the entire surface by making the influence on the resistive element uniform for each region of the plasma display panel.

In the multi-screen plasma display device according to the present invention, a plurality of plasma display panels in which a sustain electrode and an upper substrate on which scan electrodes are formed, and a lower substrate on which address electrodes are formed are sealed by a sealing member are assembled to form a single screen. A scan signal of a scan electrode is applied to one end of the scan electrode on an extended surface of the upper substrate, and one side of each of the sustain electrodes on a cutting side of the upper substrate positioned on a side opposite to one end of the scan electrode. The ends are connected by one common wiring so that the sustain signal is applied.

Here, the sustain electrodes of at least two plasma display panels assembled to form one screen may be configured such that the wiring is connected in common and the sustain signal is applied from the same sustain circuit.

In addition, the common wiring may be formed on sidewalls of the upper substrate where the different plasma display panels are adjacent to each other.

Hereinafter, exemplary embodiments of a multi-screen plasma display device according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 illustrate a plasma display panel having a multi-screen type as shown in FIG. 1 according to an embodiment of the present invention.

As described above, the multi-screen display panel is assembled with a plurality of plasma display panels, and each plasma display panel has a structure in which an upper substrate on which scan electrodes and sustain electrodes are formed and a lower substrate on which address electrodes are formed are sealed.

Each plasma display panel is cut along a side sealing line in contact with another plasma display panel to form a multi-screen, and on the opposite side, the upper substrate 20 is used for extension of wiring and electrical coupling with driving circuits. It has extending surfaces 22a and 22b.

The upper substrate 20 is an area where the actual image is displayed except for the extension surfaces 22a and 22b, and the scan electrode 24 and the sustain electrode 26 to which the scan signal and the sustain signal are applied to form the image. It is configured in parallel.

Specifically, a plurality of scan electrodes 24 are formed in a horizontal direction at positions corresponding to cells (not shown) for forming a screen, and one end of each scan electrode 24 extends to an extension surface 22b to scan An electrical connection is made with the drive circuit (not shown) and the other end extends to the position where the last cell in the horizontal direction is formed.

The plurality of sustain electrodes 26 are formed in a horizontal direction at positions corresponding to cells for forming a screen, and are formed to be spaced one predetermined distance from each other in a one-to-one correspondence with the scan electrodes 24. Here, since the scan electrode 24 and the sustain electrode 26 are intended to form a screen by generating surface discharge in the same cell, the separation distance is preferably determined in consideration of the cell area. In addition, the entire sustain electrode 26 is electrically connected by one common wire 28 at the cut side, and extends to the position where the last cell in the horizontal direction is formed.

As described above, the structure in which the entire sustain electrode 26 is electrically connected by one common wiring 28 may be presented as shown in FIG. 4.

That is, the plasma display panel according to the embodiment has a structure in which the upper substrate 30 and the lower substrate 32 are sealed with the sealing member 34 and the buffer member 36 is adhered to the cut side. Therefore, the sustain electrode 26 is formed on the lower surface of the upper substrate 30, and the extending end thereof is formed to extend upward along the side wall. In this case, although the common wiring 28 has been described as being formed on the sidewall, it may be formed on the upper surface of the upper substrate 30 or the same surface on which the sustain electrode 26 is formed according to the manufacturer's intention.

3 and 4, the scan signal is applied from the extension surface 22b side, and the sustain signal is applied from the common wiring 28 side. That is, since the directions in which the signals are applied are opposite to each other, the resistive elements of the electrodes have opposite effects on the respective signals. Therefore, each scan signal and the sustain signal are complementary to each other in the transmission process, and eventually guarantee the same brightness over the entire surface.

As described above, the scan signal and the sustain signal are applied to the luminance of about 210 Cd / m 3 and the center region of the luminance to about 200 Cd / m 3.

On the other hand, although the embodiment according to the present invention has been described as being limited to one panel, the multi-screen type plasma display device to which the embodiment is applied is configured to share common wiring to adjacent panels in consideration of the combination of a plurality of plasma display panels. It is possible to configure, and the configuration thereof will be easily implemented as long as the technical spirit of the present invention is understood.

In this case, since two or four sustain driving circuits installed in each plasma display panel may be commonly applied, manufacturing cost may be reduced while reducing the number of parts required.

Therefore, according to the present invention, as the scan signal and the sustain signal are applied in the opposite direction on the upper substrate of the plasma display panel, the effect on the resistance elements is opposite to each other, thereby making the luminance of the screen uniform.

Claims (3)

The upper substrate having the sustain electrode and the scan electrode formed thereon and the lower substrate formed with the address electrode are assembled with a plurality of plasma display panels sealed by a sealing member to form a single screen, and the scan signal of the scan electrode extends from the upper substrate. One end of each of the sustain electrodes is connected to one common wire at a cutting side of the upper substrate which is applied to one end of the scan electrode on the surface and is located on the side opposite to the one end of the scan electrode. The multi-screen plasma display device, characterized in that configured to be applied. The method of claim 1, And at least two sustain electrodes of at least two plasma display panels assembled to form the single screen are connected so that a sustain signal is applied from the same sustain circuit. The method of claim 1, The common wiring is a multi-screen plasma display device, characterized in that different plasma display panels are formed on the sidewall of the upper substrate of the adjacent position.

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