KR100609513B1 - Plasma Display Panel and Making Method thereof - Google Patents

Abstract

The present invention relates to a plasma display panel and a method of manufacturing the same. A plasma display panel according to the present invention comprises: a glass substrate having a plurality of through holes formed in a non-discharge area; A getter room made of copper attached to correspond to the through hole of the glass substrate; And a getter formed inside the getter room made of copper. In addition, the manufacturing method of the plasma display panel of the present invention comprises the steps of forming a plurality of through holes in the non-discharge region of the glass substrate; Attaching a getter room made of copper to correspond to the through hole of the glass substrate; Inserting the getter into the copper getter room; And sealing the getter room. According to the present invention there is an effect that the workability of the process is improved and the production yield is improved because there is no risk of breakage during production.

Plasma, display, panel, exhaust, getter

Description

Plasma Display Panel and Making Method             

1 is a perspective view schematically showing the structure of an AC type plasma display panel according to the prior art;

2 is a view illustrating a shape in which a getter is mounted on a plasma display panel according to the related art.

3 is a view for explaining a getter forming process of the plasma display panel manufacturing process according to the prior art.

4 is a schematic exploded perspective view of a plasma display panel according to an embodiment of the present invention.

5 is a view for explaining a getter room forming process in the method of manufacturing a plasma display panel according to an embodiment of the present invention.

***** Explanation of symbols for the main parts of the drawing *****

100: front substrate 110, 120: sustain electrode

130a: upper dielectric layer 140: protective layer

200: rear substrate 201: through hole

202: getter room 203: getter

204 frit glass 210 partition wall

220: address electrode 230: phosphor

The present invention relates to a plasma display device, and more particularly, to a plasma display panel including a getter room installed to remove an impurity gas in the panel, and a manufacturing method thereof.

In general, a plasma display panel (hereinafter referred to as a PDP) is applied with an alternating current (DC) or a direct current (AC) voltage to an electrode, and a gas discharge occurs between the electrodes. At this time, the phosphor by ultraviolet radiation emits light. To display an image.

1 is a perspective view schematically showing the structure of an AC type plasma display panel according to the prior art. As shown in the figure, the PDP is coupled in parallel with the front glass substrate 10 which is the display surface on which the image is displayed and the rear glass substrate 20 which forms the rear surface with a predetermined distance therebetween.

The front glass substrate 10 is made of a metal material and sustain electrodes 11 and 12 for maintaining light emission of cells by mutual discharge in one pixel below, that is, transparent electrodes 11a and 12a made of a transparent ITO material. The sustain electrodes 11 and 12 provided with the bus electrodes 11b and 12b are formed in pairs. The sustain electrodes 11 and 12 form a wall charge, are maintained by the discharge sustain voltage, and are covered by the upper dielectric layer 13a which protects the electrode from ion shock during plasma discharge and serves as a diffusion barrier. On the upper dielectric layer 13a, a protective layer 14 on which magnesium oxide (MgO) is deposited is formed to facilitate discharge conditions.

In the rear glass substrate 20, a plurality of discharge spaces, that is, stripe-type partition walls 21 for forming a cell are arranged in parallel with each other and an address discharge is performed at a portion that intersects with the sustain electrode 11. A plurality of address electrodes 22 are generated in parallel to the partition wall 21. In addition, a lower dielectric layer 13b is formed on an upper surface of the address electrode 22, and an upper surface of the lower dielectric layer 13 is formed by applying R, G, and B fluorescent layers 23 that emit visible light for image display during address discharge. do.

A conventional front glass substrate and a rear glass substrate having such a structure are sealed by frit glass to form a PDP, and in order to increase discharge efficiency during plasma discharge inside the PDP, helium (He), neon (Ne), xenon (Xe), and the like. The same inert gas is injected.

Meanwhile, referring to a process of injecting an inert gas into the PDP, first, an exhaust hole is formed in the front glass substrate or the rear glass substrate of the PDP to forcibly exhaust the impurity gas present therein, and in the state having a constant degree of vacuum. One inert gas is injected. At this time, when an inert gas is injected while the impurity gas or air present in the PDP is not sufficiently exhausted, a large amount of impurity gas such as H ₂ O, H ₂ , O ₂ , CO, CO _2, etc. is present. In driving, the discharge start voltage characteristics for driving the discharge, the driving voltage characteristics, and the luminance characteristics are adversely affected.

Therefore, a non-diffusion getter is formed in the PDP in order to remove the impurity gas generated in these exhaust processes and other various processes.

2 is a view illustrating a getter mounted on a plasma display panel according to the related art. As shown in the drawing, the conventional PDP is provided with a glass getter room 15 for mounting the getter 16 in addition to the exhaust pipe 17 for evacuating the inside of the panel, and the getter 16 in the getter room 15. ) Is inserted to adsorb and remove the impurity gas generated in a predetermined process such as an exhaust process in the PDP manufacturing process.

These getters are inserted into a getter room having a certain number according to the size of the PDP and mounted on the PDP. In general, about 4 getters are mounted in the 42 "inch model PDP.

3 is a view for explaining a getter forming process of the plasma display panel manufacturing process according to the prior art. Referring to FIG. 3, a getter forming process is performed. First, a bonding process is performed in which a front glass substrate and a rear glass substrate are sealed by frit glass. At this time, in order to inject a constant vacuum and inert gas into the inside of the PDP, an exhaust pipe is installed on one of the front and rear glass substrates, and at the same time, a getter room made of the same glass material as the exhaust pipe is installed on the rear glass substrate.

Thereafter, the getter is inserted into the getter room, the tip is turned off by applying heat, and the exhaust process is performed by applying heat to maintain a predetermined degree of vacuum inside the PDP using an exhaust pipe installed on the rear glass substrate. Do it. At this time, the getter formed in the getter room is activated by the heated heat during the exhaust process to adsorb the impurities gas present therein.

Thereafter, after inert gas is injected into the PDP through the exhaust pipe, the exhaust pipe is tip-off.

On the other hand, the getter installed in the PDP can improve the PDP characteristics by removing the impurity gas present in the panel, but the glass getter room for installing the getter has various problems in the process.

First, in order to tip off a getter room made of a glass tube, it is locally heated using a torch or the like to melt the glass tube and tip off the process, which is difficult to produce. There is a problem that the yield is low.

In addition, in order to prevent the heat of the torch from being transferred to the glass substrate during the tip-off process of the getter room, a certain amount of free space is inevitably required. There is a problem that it becomes difficult to design and manufacture a circuit part such as a mechanical part such as a driving circuit board.

In addition, the getter room is a structure protruding on the rear side of the panel, and this structure also makes it difficult to install a mechanical part such as a heat sink on the rear surface of the PDP, and must be designed in consideration of the getter room in which the driving circuit board and the like protrude. There are many limitations.

In addition, the getter room is made of a glass material has a problem that is likely to be damaged during the modular operation of installing the heat sink and the driving circuit board after the PDP production.

Accordingly, an object of the present invention is to provide a plasma display panel and a method of manufacturing the same, which improve workability of a manufacturing process and improve the production yield since there is no risk of damage during manufacturing.

According to an aspect of the present invention, there is provided a plasma display panel comprising: a glass substrate having a plurality of through holes formed in a non-discharge area; A getter room made of copper attached to correspond to the through hole of the glass substrate; And a getter formed inside the getter room of the copper material.
According to this feature, the getter room is fixed and attached by frit glass.

According to another aspect of the present invention, a method of manufacturing a plasma display panel includes the steps of: forming a plurality of through holes in a non-discharge region of a glass substrate; Attaching a getter room made of copper to correspond to the through hole of the glass substrate; Inserting a getter into the copper getter room; And sealing the getter room.
According to this feature, the step of attaching the getter room attaches the getter room through the fleet grass.
According to this feature, the step of sealing the getter room compresses and cuts the getter room.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

4 is a schematic exploded perspective view of a plasma display panel according to an embodiment of the present invention. Referring to FIG. 4, in the PDP of the present invention, the front glass substrate 100 and the rear glass substrate 200 on which an image is displayed are coupled in parallel by a frit glass A with a predetermined distance therebetween.

That is, the front glass substrate 100 is made of a sustain electrode (110,120), that is, a transparent electrode (110a, 120a) formed of a transparent ITO material and a metal material for maintaining the light emission of the cell by mutual discharge in one pixel below The sustain electrodes 110 and 120 provided as the bus electrodes 110b and 120b are formed in pairs. The sustain electrodes 110 and 120 form a wall charge, are maintained by the discharge sustain voltage, and are covered by the upper dielectric layer 130a which protects the electrode from ion shock during plasma discharge and serves as a diffusion barrier. A protective layer 140 on which magnesium oxide (MgO) is deposited is formed on the top surface of the dielectric layer 130a to facilitate discharge conditions.

In the rear glass substrate 200, a plurality of discharge spaces, that is, stripe-type barrier ribs 210 for forming cells are arranged to be parallel to each other, and an address discharge is performed at a portion that intersects with the sustain electrodes 110 and 120. A plurality of address electrodes 220 are generated in parallel to the partition wall 210. In addition, a lower dielectric layer (not shown) is formed on an upper surface of the address electrode 220, and an R, G, and B fluorescent layer 230 that emits visible light for displaying an image upon address discharge is coated on the lower dielectric layer. Is formed. In addition, a plurality of through holes are formed in an outer portion of the rear glass substrate, which is a plasma non-discharge area, and a getter room 202 made of copper is formed on the back of the rear glass substrate 200 where the through holes are located. It is fixedly attached by (Frit glass, 204). The getter room is formed in plural numbers according to the number of the through holes, and a getter 203 for removing impurity gas is formed therein.

5 is a view for explaining a getter room forming process in the method of manufacturing a plasma display panel according to an embodiment of the present invention.

First, although not shown in the drawing, a front glass substrate on which a plurality of sustain electrodes are formed and a back glass substrate on which a plurality of address electrodes are formed are manufactured.

Thereafter, as shown in FIG. 5A, a plurality of through holes 201 are formed in the plasma non-discharge region of the rear glass substrate 200.

Subsequently, as shown in FIG. 5 (b), a frit glass (not shown) is applied to an outer surface of the rear glass substrate on which the through hole is formed, and heat-treated at a predetermined temperature to be bonded to the pre-fabricated front glass substrate 100 to form a PDP. To form. At this time, the getter room 202 made of copper material is attached to the position of the through hole formed in the rear glass substrate 200, and then baked and fixed.

On the other hand, in the present invention, the getter room is made of copper, but in some cases using a sus (SUS) series of materials used for maintaining the vacuum in the connection portion of the metal tube or assembled by connecting the respective parts in the vacuum deposition equipment When using a vacuum gasket (gasket) can be used. In other words, any one can be used as long as vacuum tightness is maintained by using plastic deformation of the metal.

Thereafter, as shown in FIG. 6C, the getter 203 is inserted into the getter room 202 formed on the rear glass substrate, and the getter inlet 202a is crimped using cutting means such as a nipper. Cut and seal.

As described above, when the PDP is manufactured using the copper getter room instead of the glass getter room, the high temperature torch used for sealing the glass getter room is eliminated, and workability is greatly improved. . In addition, a free space for preventing the glass substrate from being heated by the torch is not required, and thus the length of the entire getter room can be reduced, thereby increasing the degree of freedom in designing the mechanical part and the circuit part mounted on the rear surface of the PDP.

In addition, it is possible to solve the problem that the conventional getter room is easily broken because of the glass material in the modularization process of installing the PDP mechanism and the circuit unit.

As described above, it will be understood by those skilled in the art that the above-described technical configuration may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

 As described above, the present invention has the effect of improving the workability of the process compared to the plasma display panel manufactured by using a getter room made of glass tube material and there is no risk of breakage during production, thereby improving production yield.

Claims (5)

In the plasma display panel, A glass substrate having a plurality of through holes formed in the non-discharge region; A getter room made of copper attached to correspond to the through hole of the glass substrate; And And a getter formed inside the copper getter room. The method of claim 1, And the getter room is fixed and attached by frit glass. In the method of manufacturing a plasma display panel, Forming a plurality of through holes in the non-discharge region of the glass substrate; Attaching a getter room made of copper to correspond to the through hole of the glass substrate; Inserting a getter into the copper getter room; And And sealing the getter room. The method of claim 3, wherein And attaching the getter room through the fleet grass. The method of claim 3, wherein Sealing the getter room, wherein the getter room is compressed and cut.

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