KR19990056758A - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which the shape of a transparent electrode is changed to improve discharge efficiency. According to the present invention, a plurality of address electrodes parallel to each other are formed at equal intervals, and barrier ribs defining unit discharge cells between the address electrodes and preventing crosstalk between adjacent discharge cells are parallel to the address electrodes. Two or more pairs of rear substrates respectively formed and a pair of transparent electrodes parallel to each other maintaining a first gap are formed at a second interval wider than the first gap, and a bus electrode is formed on each transparent electrode. Between the two transparent electrodes having a smaller width in the longitudinal direction of the transparent electrode and maintaining the first gap, a front substrate formed along the edge of the non-facing surface is sealed so that the arrangement surfaces of the electrodes face each other. A plasma display panel in which a discharge gas is enclosed in a discharge cell defined by a partition wall. The part disposed in the whole cell is characterized in that formed in the form of a triangle with a point.

Description

Plasma display panel

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which the shape of a transparent electrode is changed to improve discharge efficiency.

Plasma Display Panel (PDP), which is one of the flat panel display devices, is a display device that uses gas discharge, and can be manufactured with a relatively thin thickness. In addition, the present invention is emerging as a next-generation display device because of the advantage of being able to reduce the size of the display device and easily produce a large display device.

1 is a view showing an AC PDP according to the prior art, in which a pair of glass substrates, namely, back and front substrates 1 and 6, fabricated through an independent process are shown thereon, respectively. Arranged surfaces of the formed electrodes face each other, and a discharge gas 10 such as argon (Ar), neon (Ne), or xenon (Xe) is enclosed in the discharge cell.

Here, a plurality of address electrodes 2 for transmitting data on the rear substrate 1 and a first dielectric layer 3 are formed on the entire surface of the substrate 1 so as to cover the first substrate layer, and the first electrode layer 2 between the address electrodes 2 is formed. Barrier ribs 4 are formed on the first dielectric layer 3 to define independent discharge spaces in parallel with the address electrodes 2 and to suppress crosstalk between adjacent discharge cells. . In addition, phosphors 5 emitting red, blue, and green colors are repeatedly applied to each discharge space between the partition walls.

On the other hand, the discharge holding electrodes 7 including the transparent electrode 7a and the bus electrode 7b are formed on the front substrate 6, and the second dielectric layer is formed on the front substrate 6 including the discharge holding electrodes 7. (8) and a protective layer 9 such as an MgO film are laminated.

2 is a plan view illustrating a front substrate on which a discharge sustaining electrode of a conventional PDP is formed. Here, the same parts as in Fig. 1 are denoted by the same reference numerals.

As shown, the discharge sustaining electrode 7 is composed of a transparent electrode 7a and a bus electrode 7b. A plurality of transparent electrodes 7a are arranged on the front substrate 6 in parallel with each other. The two transparent electrodes 7a are arranged at a first interval, and between the two transparent electrodes 7a arranged at the first interval, the two transparent electrodes 7a are arranged adjacent to each other at a first interval. Arranged at two intervals, the second interval being maintained at a wider interval than the first interval.

In addition, the bus electrode 7b is formed on the transparent electrodes 7a in a length smaller than the width of the transparent electrode 7a in its length direction, and the bus electrode 7b is formed of two transparent electrodes 7a. They are each formed along edges opposite to mutually adjacent edges.

In the above, the first interval is maintained such that a discharge can occur between the two discharge sustaining electrodes 7, and the second interval is adjacent to the discharge between the two discharge sustaining electrodes 7 arranged at the first interval. The discharge between the two discharge sustaining electrodes 7 and the mutual interference phenomenon are maintained.

3 is a schematic configuration diagram of a conventional PDP, which is a plan view showing the arrangement of electrodes and partitions. 1 and 2 are denoted by the same reference numerals.

As shown, two transparent electrodes 7a are arranged in parallel at a predetermined interval, and on each transparent electrode 7a, a bus electrode having a width smaller than the width of the transparent electrode 7a in its longitudinal direction. 7b are formed, respectively. At this time, the bus electrodes 7b are formed along edges opposite to adjacent edges of the two transparent electrodes 7a, respectively.

The barrier ribs 4 are arranged at equal intervals and are orthogonal to the transparent electrodes 7a, and the address electrodes 2 are arranged in parallel with the barrier ribs 4 between the barrier ribs 4.

However, the conventional PDP as described above typically uses indium tin oxide (ITO) as a transparent electrode. Since the ITO is formed in a stripe shape having a predetermined width as described above, the space occupied in the discharge space is large. In addition, since ITO has a transmittance of approximately 90%, there is a problem that the luminance of the PDP is lowered, and there is also a problem that the discharge start voltage is high.

Accordingly, the present invention has been made to solve the above problems, by making the transparent electrode portion disposed in the discharge space in the form of a triangle having a point, it is possible to increase the brightness of the PDP as well as to lower the discharge start voltage The purpose is to provide a PDP.

1 is a cross-sectional view for explaining a conventional AC plasma display panel.

2 is a plan view showing a front substrate on which a discharge sustaining electrode of a conventional AC plasma display panel is formed;

3 is a schematic configuration diagram of a conventional alternating current plasma display, showing a layout of electrodes and partition walls;

4 is a schematic configuration diagram of a plasma display panel according to the present invention, and a plan view showing the arrangement of a transparent electrode, a bus electrode, and a partition wall;

5 and 6 are schematic configuration diagrams of a plasma display panel according to another embodiment of the present invention.

(Explanation of symbols for the main parts of the drawing)

20: transparent electrode 21: bus electrode

22: bulkhead

The above object is provided with a plurality of address electrodes that are parallel to each other at equal intervals, and the barrier ribs defining unit discharge cells between the address electrodes and preventing crosstalk between adjacent discharge cells. Two or more pairs of back substrates formed in parallel with each other and a pair of transparent electrodes parallel to each other maintaining a first interval are formed at a second interval wider than the first interval, and a bus is formed on each transparent electrode. The front substrate is formed along the edge of the non-facing surface between the two transparent electrodes having a smaller width in the longitudinal direction of the transparent electrode and maintaining the first gap, so that the electrodes face the arrangement surface. And a PDP in which discharge gas is enclosed in a discharge cell defined by the partition wall, wherein the transparent electrode is disposed in the discharge cell. That part that is formed of a triangular shape having a cusp as claimed is achieved by the PDP according to the present invention.

According to the present invention, by forming a transparent electrode portion disposed in the discharge space in the form of a triangle having a point, the opening ratio can be improved, and the discharge start voltage can be lowered through the concentration phenomenon of the charged particles.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a schematic configuration diagram of a PDP according to an embodiment of the present invention, which is a plan view showing the arrangement of a transparent electrode, a bus electrode, and a partition wall.

As shown, the transparent electrodes 20 formed on the front substrate (not shown) to generate a discharge according to the applied voltage are formed of a transparent metal such as indium tin oxide (ITO), SnO ₂ or ZnO ₂ . As shown, the two are arranged in a stripe form at predetermined intervals. In addition, bus electrodes 21 made of opaque metal having a width smaller than the width of the transparent electrode 20 are formed on each of the transparent electrodes 20 in a length direction thereof, wherein the bus electrodes 21 are It is formed along the non-opposing edges of the two transparent electrodes 20, respectively.

In addition, the barrier ribs 22 formed on the back substrate (not shown) to limit the unit discharge cells and prevent crosstalk between adjacent discharge cells are arranged in parallel with each other in a stripe shape and the transparent electrode 20 ) And the bus electrode 21 are orthogonal to each other.

In the above, the transparent electrode 20 is formed in a triangular shape having a point where the portion disposed in the discharge space, and, in addition, each point of the opposite transparent electrode 20 is arranged to face on the same line.

As a result, since the opening area covered by the transparent electrode 20 is reduced by about 50%, it is possible to improve the brightness of the PDP due to the improvement of the opening ratio. In addition, since the two adjacent transparent electrodes 20 causing the discharge are made in the form of triangles having opposite points, the charged particles are concentrated at the peaks of the respective transparent electrodes 20 during discharge. The discharge start voltage can be lowered than when the transparent electrodes oppose in parallel.

Meanwhile, as another embodiment of the present invention, as shown in FIG. 5, the transparent electrode 20 may be manufactured in a triangular shape, and the opposite points of the transparent transparent electrodes 20 may be shifted without facing each other. Also in this case, the same effect as above can be obtained. In addition, as shown in FIG. 6, the same effect as described above may be obtained even when the transparent electrode 20 is manufactured to have two or more number of dots. here. Unexplained reference numeral 21 is a bus electrode and 22 is a partition wall.

As described above, the PDP according to the present invention can improve the luminance of the PDP by increasing the aperture ratio by manufacturing the transparent electrode portion disposed in the discharge space in a triangular form with a point, and also has a triangular form with a point By causing the discharge to occur between the transparent electrodes, the discharge start voltage can be lowered.

Meanwhile, although specific embodiments of the present invention have been described and illustrated, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (4)

A plurality of address electrodes parallel to each other are formed at equal intervals, and barrier ribs defining unit discharge cells between the address electrodes and preventing crosstalk between adjacent discharge cells are formed in parallel with the address electrodes, respectively. Two or more pairs of substrates and a pair of transparent electrodes parallel to each other maintaining a first gap are formed at a second interval wider than the first gap, and a bus electrode is formed on each transparent electrode. Between the two transparent electrodes having a smaller width in the longitudinal direction and maintaining the first gap, a front substrate formed along the edge of the non-facing surface is sealed to face the arrangement surface of the electrodes. A plasma display panel in which discharge gas is enclosed in a limited discharge cell, And the transparent electrode has a triangle shape in which a portion disposed in the discharge cell has a point. 2. The plasma display panel of claim 1, wherein the transparent electrodes are arranged such that the sharp points of the two opposing transparent electrodes face each other on the same line. The plasma display panel of claim 1, wherein the plurality of transparent electrodes are arranged to be offset from each other on the same line. The plasma display panel of claim 1, wherein the transparent electrode has two or more dots.