KR100947954B1 - PDP and method thereof - Google Patents

Abstract

The present invention relates to a plasma display panel capable of minimizing migration, wherein a plurality of X electrode lines and a plurality of Y electrode lines are alternately arranged on a front substrate, and the plurality of X electrode lines are displayed on the display. Commonly drawn from the outer edge of the region, a predetermined region insulating film is formed on the outer edge of the display region, and the X electrode line and the Y electrode line are separated up and down at the crossing position by the insulating film.

Description

Plasma display panel {PDP and method approximately}

1 is an exploded perspective view showing a state in which a typical PDP is separated.

2 is a view showing a lead-out structure of a sustain / scan electrode of a conventional PDP.

3A is a view showing a lead structure of a sustain / scan electrode of a PDP according to the first embodiment of the present invention;

3B is a view illustrating a lead structure of a sustain / scan electrode of a PDP according to a second embodiment of the present invention.

4A, 4B, and 4C are cross-sectional views of the sustain / scan electrodes of FIGS. 3A and 3B.

5 is a view showing a lead structure of a sustain / scan electrode of a PDP according to a third embodiment of the present invention;

6 is a view showing a lead structure of a sustain / scan electrode of a PDP according to a fourth embodiment of the present invention;

7 is a view showing a lead structure of a sustain / scan electrode of a PDP according to a fifth embodiment of the present invention;

The present invention relates to a plasma display panel, and more particularly to a plasma display panel that minimizes migration.

A plasma display panel (PDP) is a device that displays characters or graphics using light emitted from plasma generated during gas discharge.

The plasma display panel has a direct current (DC type) in which a plasma is directly exposed to the plasma and a conduction current flows directly through the electrode. It is divided into AC type through which current flows.

1 is an exploded perspective view showing a state in which a general PDP is separated.

The general PDP includes a front substrate 10 and a rear substrate 20.

In the front substrate 10, a sustain electrode X and a scan electrode Y are formed to maintain light emission of cells by mutual discharge in one pixel. The sustain / scan electrode includes a transparent electrode (or ITO) Xa and Ya formed of a transparent ITO material and bus electrodes Xb and Yb made of a metal material.

On top of the sustain electrode X and the scan electrode Y, a dielectric layer 11 and a protective layer 12 that limit discharge current and insulate between electrode pairs are sequentially stacked.

The sustain electrode X is a common electrode for applying an AC voltage at the time of discharge, and the scan electrode Y is an electrode for generating wall charges by generating a discharge during the initial driving of the PDP.

On the other hand, a plurality of stripe type (or dot time) partition walls 21 are arranged in parallel with each other, and the address electrode 22, the dielectric layer 23, and the fluorescent layer 24 are stacked on the rear substrate 20.

The address electrode 22 is composed of a plurality of intersecting the sustain / scan electrodes, and the fluorescent layer 24 emits visible light for image display during address discharge.

Such a PDP may be manufactured in a multi-type in which a plurality of unit PDPs are connected to make a larger display device.

In this case, in order to reduce the seam area, a technique in which the sustain (X) / scan (Y) electrode of the front substrate is drawn in the same direction is applied.

In addition, a technique of drawing the sustain electrode and the scan electrode in one direction may be implemented to integrate the sustain electrode driving circuit and the scan electrode driving circuit for driving the sustain electrode and the scan electrode.

2 is a view showing a structure that is drawn out in the same direction of a sustain / scan electrode of a conventional PDP.

As shown in FIG. 2, in the conventional single PDP, the front substrate 26 and the rear substrate 27 are overlapped and sealed, and the sustain electrodes X1, X2, ... and the scan electrodes Y1, Y2, ... It has a structure that is drawn out to one extended surface.

At this time, the sustain electrodes X1, X2, ... and the scan electrodes Y1, Y2, ... are alternately provided in the display area 28, and are led out to the extension ends of the front substrate 26 through the connecting portion 29. do.                         

However, as the sustaining / scanning electrodes are drawn in the same direction and the number of lines is increased to improve the resolution, the gap difference between the respective electrode lines X1, X2, Y1, Y2, ... becomes narrow.

As such, when the interval between the electrode lines X1, X2, Y1, Y2,... Becomes narrow, a migration phenomenon occurs in which metal ions in the metal electrode diffuse to the adjacent electrode. The migration phenomenon may reduce the reliability of the electrode and adversely affect the lifetime and quality of the PDP.

In addition, the conventional PDP structure as shown in FIG. 2 has a problem that it is difficult to thermally compress each pad part of the sustain / scan electrode because it cannot be placed on the same horizontal axis.

An object of the present invention for solving the above problems is to prevent the migration by forming an insulating film on the outer side of the display area and improving the sustain electrode (X) to a common structure by a predetermined unit.

The present invention for achieving the above object is that the front substrate and the rear substrate is overlapped, the display area is included in the overlap region, a plurality of X electrode lines and a plurality of Y electrode lines for the sustain discharge is alternately disposed on the front substrate In the plasma display panel, a plurality of X electrode lines are commonly drawn at the outer side of the display area.

A predetermined region insulating film is formed on the outer side of the display area, and the X electrode line and the Y electrode line are separated up and down at the crossing position by the insulating film.                     

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

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

3A illustrates a lead-out structure of the sustain / scan electrode of the PDP according to the first embodiment of the present invention.

As shown in FIG. 3A, in the PDP according to the first embodiment of the present invention, the front substrate 31 and the rear substrate 32 are overlapped and encapsulated, and the display region 33 is included in the overlap region.

Scan electrodes Y1, ..., Yn and sustain electrodes X1, ..., Xn are alternately spaced apart from each other in the display area 33 of the front substrate 31, and the scan electrodes Y1 are extended to one end. Yn and sustain electrodes X1, Xn are taken out. At this time, the scan electrodes Y1, ..., Yn are led out to the extended end, and the sustain electrodes X1, ..., Xn are drawn out in a single line at the outer edge of the display area 33.

Referring to the method of forming the PDP according to the first embodiment of the present invention, the scan electrodes Y1, ..., Yn are formed on the glass substrate, and the scan electrodes Y1, corresponding to the outer edges of the display area 33 are formed. After applying the insulating film 30 to the predetermined region over Yn, sustain electrodes X1, ..., Xn are formed. The sustain electrodes X1,..., Xn thus formed are commonly connected at the top of the insulating electrodes X1,..., Xn and are drawn out through the last sustain electrode Xn.

3B is a diagram illustrating a lead structure of a sustain / scan electrode of a PDP according to a second embodiment of the present invention.

As shown in FIG. 3B, in the PDP according to the second embodiment of the present invention, the front substrate 41 and the rear substrate 42 are overlapped and encapsulated, and the display region 43 is included in the overlapped region.

Scan electrodes Y1, ..., Yn and sustain electrodes X1, ..., Xn are alternately arranged in the display area 43 of the front substrate 41, and the scan electrodes Y1, ... Yn and sustain electrodes X1, Xn are taken out. At this time, the scan electrodes Y1, ..., Yn are led out to the extended ends, and the sustain electrodes X1, ..., Xn are connected in common at the outer edges of the display area 43 and drawn out in a single line.

Referring to the PDP forming method according to the second embodiment of the present invention, the sustain electrodes (X1, ..., Xn) are formed on the glass substrate, and the sustain electrodes (X1, ...) corresponding to the outer side portions of the display area 43 are described. After the insulating film 40 is coated on the upper predetermined region, Xn, scan electrodes Y1, ..., Yn are formed over the insulating film 40. At this time, the sustain electrodes X1,..., Xn are connected in common under the insulating film 40 and are led out through the last sustain electrode Xn.

4A is a cross-sectional view taken along the line AA ′ of FIG. 3A.

As shown in FIG. 4A, when A-A 'of the PDP of FIG. 3A is cut, a scan electrode Y is formed on the glass substrate 100, and an insulating film 101 is formed on the scan electrode Y. A predetermined region is applied, and the sustain electrode X is formed on the insulating film 101. At this time, the sustain electrode X is narrower than the insulating film 101.

4B is a cross-sectional view taken along the line BB ′ of FIG. 3A.                     

As shown in FIG. 4B, when B-B 'of the PDP of FIG. 3A is cut, an insulating film 101 is coated on one side of the glass substrate 100, and a sustain electrode surrounding the upper one side and the side of the insulating film 101. (X) is formed.

4C is a cross-sectional view taken along line C-C 'of FIG. 3B.

As shown in FIG. 4C, when C-C ′ of the PDP of FIG. 3B is cut, the sustain electrode X is formed on one side of the upper portion of the glass substrate 100, and the entire upper and both sides of the sustain electrode X are formed. Wrapping insulating film 101 is coated. In this case, the scan electrode Y is formed on the glass substrate 100 by covering the upper side and both sides of the insulating layer 101.

5 is a diagram illustrating a lead structure of a sustain / scan electrode of a PDP according to a third embodiment of the present invention.

In the PDP according to the third embodiment of the present invention, the scan electrodes (Y1, ..., Yn) and the sustain electrodes (X1, ..., Xn) are alternately provided in the display area 53, and the scan electrodes (Y1, ..., ...) Yn) is drawn out to an extended end of the front substrate 51, and the sustain electrodes X1, ..., Xn are divided into two branches so that the common connection end is drawn out.

At this time, the withdrawal position is preferably both ends formed with the scan electrodes (Y1, ..., Yn), 52 is the rear substrate.

The first and second embodiments shown in FIGS. 3A and 3B described above are connected to the sustain electrodes X1, ..., Xn in common and are drawn out in one direction through one sustain electrode Xn.

On the other hand, in the PDP according to the third embodiment shown in FIG. 5, the driving electrodes can be further improved by dividing the sustain electrodes X1,..., Xn into two branches. At this time, it is preferable that the scan electrodes Y1, ..., Yn are divided into several branches and can be drawn out. In the PDP according to the third embodiment, like the first and second embodiments, the sustain electrode X and the scan electrode Y are separated from each other by the insulating film 50.

6 is a diagram illustrating a lead structure of a sustain / scan electrode of a PDP according to a fourth embodiment of the present invention.

As shown in FIG. 6, the sustain electrode X and the scan electrode Y are alternately provided, and the plurality of scan electrodes Y are drawn out to form a group, and the plurality of sustain electrodes X are common. Connected to make a number of groups withdrawal. In other words, the sustain electrodes X and the scan electrodes Y are not alternately drawn out, but the sustain electrodes X and the scan electrodes Y are separated in group units.

At this time, the gap between the scan electrodes Y is drawn out as it is in the pad part, and the sustain electrodes X are collectively drawn out. In the PDP according to the fourth embodiment, as in the first and second embodiments, the sustain electrode X and the scan electrode Y are separated from each other by the insulating film 60.

In FIG. 6, a specific number of sustain electrodes X are bundled and drawn out, but the number of sustain electrodes X to be bundled and drawn out may be arbitrarily determined.

7 is a diagram illustrating a lead structure of a sustain / scan electrode of a PDP according to a fifth embodiment of the present invention.

The sustain electrode X and the scan electrode Y are alternately provided, and the plurality of scan electrodes Y drawn from the pad part are drawn out, and the plurality of sustain electrodes X are drawn out. In other words, the sustain electrodes X and the scan electrodes Y are not alternately drawn out, but the sustain electrodes X and the scan electrodes Y are separated out.

At this time, the gap between the scan electrodes Y is drawn out as it is in the pad part, and the gap between the sustain electrodes X is narrowed as much as possible to draw out in an unbound state.

In FIG. 7, a specific number of scan electrodes Y and sustain electrodes X are divided and drawn out, but the number of divided sustain electrodes X and scan electrodes Y may be arbitrarily determined. In the PDP according to the fifth embodiment, as in the first and second embodiments, the sustain electrode X and the scan electrode Y are separated from each other by the insulating film 70.

As such, the PDP according to the first to fifth embodiments described above can reduce migration by widening the interval between the electrodes to be drawn out.

According to the present invention, the Y electrode line may be drawn out by forming a plurality of groups of the Y electrode lines, and the X electrode line may be configured to be drawn out by forming a plurality of groups in common connection between the X electrode lines.

In addition, the present invention may be configured such that the Y electrode line is drawn out by forming a plurality of groups of Y electrode lines, and the X electrode line is drawn out by forming a plurality of groups of X electrode lines.

As described above, the plasma display panel according to the present invention can reduce the migration because the interval between the sustain / scan electrodes is widened, and since the pads of the sustain / scan electrodes are arranged on the same horizontal axis, they are easily opened. Compression is possible.

In addition, a preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and changes are the following claims It should be seen as belonging to a range.

Claims (6)

The front substrate and the rear substrate are overlapped, the display region is included in the overlap region, and the plurality of X electrode lines and the plurality of Y electrode lines for sustain discharge are alternately arranged in the same direction on the front substrate, and the plurality of X electrodes In the plasma display panel, a line is drawn out in common at the outer side of the display area, and an address electrode line is provided on the rear substrate in a direction orthogonal to the X electrode line and the Y electrode line. In the outer side portion of the display area, an insulating film is formed in a region where the X electrode line and the Y electrode line intersect, and the Y electrode line is drawn out in a plurality of groups of Y electrode lines, and the X electrode line Plasma display panel, characterized in that the X electrode lines are connected in common to draw a plurality of groups. delete delete delete delete delete

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