KR20010097048A - Sustain Electrode in Plasma Display Panel - Google Patents

Abstract

The present invention relates to a common sustain electrode of a plasma display panel to reduce the resistance difference between the common sustain electrode line.

The common sustain electrode of the plasma display panel of the present invention includes a common pad in which a plurality of common sustain electrode lines are connected in parallel to supply a sustain pulse from the outside to a plurality of common sustain electrode lines in common.

According to the present invention, since one common pad is formed at the ends of the common sustain electrode lines, there is no resistance difference.

Description

Common electrode of plasma display panel {Sustain Electrode in Plasma Display Panel}

The present invention relates to a plasma display panel, and more particularly, to a common sustain electrode of a plasma display panel to reduce a resistance difference between common sustain electrode lines.

Plasma Display Panel (hereinafter referred to as "PDP") is a display device using visible light generated from a phosphor when ultraviolet light generated by gas discharge excites the phosphor. PDP is thinner and lighter than Cathode Ray Tube (CRT), which has been the mainstay of display means, and has the advantage of being able to realize high definition large screen. PDP is composed of a plurality of discharge cells arranged in a matrix form, one discharge cell constitutes a pixel of the screen.

1 is a perspective view showing a conventional AC surface discharge PDP.

Referring to FIG. 1, a discharge cell of a three-electrode alternating surface discharge type PDP is formed on a scan / sustain electrode 12Y and a common sustain electrode 12Z formed on an upper substrate 10, and a lower substrate 18. An address electrode 20X is provided. The upper dielectric layer 14 and the passivation layer 16 are stacked on the upper substrate 10 having the scan / sustain electrode 12Y and the common sustain electrode 12Z side by side. In the upper dielectric layer 14, wall charges generated during plasma discharge are accumulated. The protective layer 16 prevents damage to the upper dielectric layer 14 due to sputtering generated during plasma discharge and increases emission efficiency of secondary electrons. As the protective film 16, magnesium oxide (MgO) is usually used. The lower dielectric layer 22 and the partition wall 24 are formed on the lower substrate 18 on which the address electrode 20X is formed, and the phosphor 26 is coated on the surfaces of the lower dielectric layer 22 and the partition wall 24. The address electrode 20X is formed in the direction crossing the scan / sustain electrode 12Y and the common sustain electrode 12Z. The partition wall 24 is formed in parallel with the address electrode 20X to prevent ultraviolet rays and visible light generated by the discharge from leaking to the adjacent discharge cells. The phosphor 26 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. Inert gas for gas discharge is injected into the discharge space provided between the upper and lower substrates 10 and 18 and the partition wall 24.

Referring to FIG. 2, a conventional AC surface discharge type PDP driving apparatus includes m / n discharge cells 1 having scan / sustain electrode lines Y1 to Ym, common sustain electrode lines Z1 to Zm, and A PDP 30 arranged in a matrix so as to be connected to the address electrode lines X1 to Xn, a scan / sustain driver 32 for driving the scan / sustain electrode lines Y1 to Ym, and a common sustain; The common sustain driver 34 for driving the electrode lines Z1 to Zm, the odd-numbered address electrode lines X1, X3, ..., Xn-3, Xn-1 and the even-numbered address electrode lines X2. First and second address drivers 36A and 36B for dividing and driving .X4, ..., Xn-2, Xn are provided. The scan / sustain driver 32 sequentially supplies scan pulses and sustain pulses to the scan / sustain electrode lines Y1 to Ym so that the discharge cells 1 are sequentially scanned in line units, and m × n The discharge in each of the four discharge cells 1 is continued. The common sustain driver 34 supplies a sustain pulse to all of the common sustain electrode lines Z1 to Zm. The first and second address drivers 36A and 36B supply image data to the address electrode lines X1 through Xn in synchronization with the scan pulse. The first address driver 36A supplies image data to the odd-numbered address electrode lines X1, X3, ..., Xn-3, Xn-1, and the second address driver 36B supplies the even-numbered address electrode lines ( Image data is supplied to X2, X4, ..., Xn-2, Xn).

3 is a diagram illustrating an electrode structure of a conventional common sustain electrode line.

Referring to FIG. 3, the conventional common sustain electrode lines Z1 to Zm include pads 50 formed at ends of the common sustain electrode lines Z1 to Zm. The pads 50 are formed at the end of each of the common sustain electrode lines Z1 to Zm by the number of the common sustain electrode lines Z1 to Zm.

The process of connecting the common sustain driver 34 and the common sustain electrode lines Z1 to Zm is described in detail. Conductive Film (hereinafter referred to as "ACF") is applied. The ACF is applied onto the pads 50 and then bonded to a flat printed circuit (FPC), which is connected to the common sustain driver 34. As many electrode lines are formed. Electrode lines and pads 50 formed in the FPC are bonded after alignment.

However, in the conventional plasma display panel, since the electrode lines and the pads formed in the FPC are bonded to each other, a resistance difference is generated between the common sustain electrode lines Z1 to Zm. Accordingly, a voltage difference may occur in each of the common sustain electrode lines Z1 to Zm, and thus a luminance difference may occur during the sustain discharge of the common sustain electrode lines Z1 to Zm. In addition, a considerable process time is required because alignment between all pads and the FPC formed in the common sustain electrode lines Z1 to Zm is required.

Accordingly, an object of the present invention is to provide a common sustain electrode of a plasma display panel to reduce the resistance difference between common sustain electrode lines.

1 is a perspective view showing a discharge cell structure of a conventional AC surface discharge plasma display panel.

FIG. 2 is a diagram showing an arrangement structure of electrode lines and discharge cells of the AC surface discharge plasma display panel shown in FIG.

3 is a diagram illustrating a pad of the common sustain electrode line illustrated in FIG. 2.

4 is a view showing a pad of the common sustain electrode line of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: discharge cell 10: upper substrate

12Y: scan / sustain electrode 12Z: common sustain electrode

14,22 dielectric layer 16: protective film

18: lower substrate 20X: address electrode

24: partition 26: phosphor

30: PDP 32: scan / sustain drive unit

34: common sustain driver 36A: first address driver

36B: second address driver 50: pad

52: common pad

In order to achieve the above object, the common sustain electrode of the plasma display panel according to the present invention has a common pad having a plurality of common sustain electrode lines connected in parallel to supply a sustain pulse from the outside to the common sustain electrode lines in common. do.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIG. 4.

4 is a view showing an electrode structure of a common sustain electrode line of the present invention.

4 will be described in conjunction with the electrode structure shown in FIG. 2.

Referring to FIG. 4, the common sustain electrode lines Z1 to Zm of the present invention include a common pad 52 formed at ends of the common sustain electrode lines Z1 to Zm. Common sustain electrode lines Z1 to Zm are commonly connected to the common pad 52. Compared to the pads of the conventional common sustain electrode lines Z1 to Zm, it can be seen that in the present invention, all common sustain electrode lines Z1 to Zm are connected to one common pad 52.

When the connection process between the common sustain driver 34 and the common sustain electrode lines Z1 to Zm is described in detail, first, an ACF is coated on the common pad 52 formed at the ends of the common sustain electrode lines Z1 to Zm. . After the ACF is applied onto the common pad 52, the FPC connected to the common sustain driver 34 is bonded to the common pad 52. In this case, since the FPC is connected to one common pad, only one electrode line is formed in the FPC.

As described above, according to the common sustain electrode of the plasma display panel according to the present invention, since a common pad is formed at the ends of the common sustain electrode lines, there is no resistance difference. In addition, when the FPC and the common pad are bonded together, the number of electrode lines of the FPC can be greatly reduced. In addition, since there is no resistance difference between the common sustain electrode lines, the difference in luminance of the screen does not occur.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (3)

A plasma display panel in which discharge cells are arranged in a matrix at an intersection of an address electrode line, a scan / sustain electrode line, and a common sustain electrode line. And a common pad to which the plurality of common sustain electrode lines are connected in parallel to supply a sustain pulse from the outside to the plurality of common sustain electrode lines in common. The method of claim 1, A cable connected to the common pad for supplying the sustain pulse to the common pad; And a common sustain driver connected to the cable to supply the sustain pulse to the cable. The method of claim 2, The cable is a sustain electrode of the plasma display panel, characterized in that formed by one electrode line.