KR20040092682A - Method and device for exhausting plasma display panel - Google Patents

Abstract

PURPOSE: An exhausting and injecting method and an apparatus in a PDP are provided to shorten an exhaust and injection time by forming a predetermined exhaust space between a front substrate and a barrier rib. CONSTITUTION: An exhausting and injecting apparatus in a PDP comprises an absorbing plate(51) and a vacuum pump(50). The absorbing plate is mounted on one side of a front substrate(10) and a rear substrate(20) and a predetermined space is formed between the front substrate and the rear substrate. The vacuum pump is connected to the absorbing plate through a pump pipe(52) and makes the space between the front substrate or the rear substrate and the absorbing plate vacuum state.

Description

Method for evacuating and injecting plasma display panel and apparatus therefor {METHOD AND DEVICE FOR EXHAUSTING PLASMA DISPLAY PANEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of evacuating and injecting a plasma display panel, and more particularly, to a method of evacuating and injecting a plasma display panel and a device thereof so that the injection and evacuation can occur quickly.

Plasma Display Panels (PDPs) are display devices that generate visible light from a phosphor when vacuum ultraviolet rays generated by gas discharge excite the phosphor.

Plasma display panels (PDPs) are in the spotlight in the light of being thinner and lighter than the cathode ray tube (CRT), which has been mainly used as a display device, and capable of realizing a high-definition large screen.

The plasma display panel is composed of a plurality of discharge cells arranged in a matrix form, one discharge cell forms a pixel, the discharge cells gather to form the entire screen.

In general, a plasma display panel is divided into a direct current type and an alternating current type, among which an AC plasma display panel is currently mainstream.

1 is a view for explaining the structure of a conventional three-electrode AC surface discharge type plasma display panel.

Referring to FIG. 1, a plasma display panel includes a front substrate 10 on which an image is displayed, and a rear substrate 20 formed spaced apart from the front substrate 10 at a predetermined interval by a frit glass. Is sealed.

The front substrate 10 includes a common holding electrode Z, a scan holding electrode Y, and the common holding electrode Z and a scan holding electrode which are arranged in pairs to maintain light emission of cells by mutual discharge. A dielectric layer 12 for limiting the discharge current of (Y) and allowing each electrode to be insulated, and a protective layer 13 for preventing damage to the dielectric layer 12 and increasing the efficiency of secondary discharge are formed.

The back substrate 20 includes a plurality of address electrodes X for generating vacuum ultraviolet rays by performing address discharge at a portion crossing the common holding electrode Z and the scan holding electrode Y, and the plurality of address electrodes. A dielectric layer 22 to insulate (X), a partition wall 21 formed at one side of the dielectric layer 22 and arranged in parallel to form a plurality of discharge spaces, ie, cells, and the partition wall 21. The fluorescent layer 23 of each of R, G, and B is formed on the side surface of the side wall and between the partition wall 21 and the partition wall 21 to emit visible light.

In addition, the common holding electrode Z is formed between a transparent electrode (ITO electrode) Za, a bus electrode Zb made of a metal material, and is formed between the transparent electrode Za and the bus electrode Zb. In order to improve contrast as a conductive material, a black layer (B) made of ruthenium oxide and lead oxide or carbon series is formed.

In addition, the scan holding electrode Y is formed between a transparent electrode (ITO electrode) Ya, a bus electrode Yb made of a metal material, and is formed between the transparent electrode Ya and the bus electrode Yb. In order to improve contrast as a conductive material, a black layer (B) made of ruthenium oxide and lead oxide or carbon series is formed.

In addition, the discharge gas is filled between the front substrate 10 and the rear substrate 20 at a pressure of 300 ~ 400 Torr, the discharge gas is mainly based on He, Ne, Ar, or a mixture thereof as a penning mixture gas. A small amount of Xe gas is used as a source of vacuum ultraviolet light that forms a gas and emits the fluorescent layer 23.

Based on the above configuration, the operation of the conventional plasma display panel will be described.

2 is a view for explaining the operation of the conventional plasma display panel.

For reference, FIG. 2 is a view illustrating the rear substrate 20 rotated 90 degrees with respect to the front substrate 10 for convenience of description.

Referring to FIG. 2, the plasma display panel displays an image by an address display separator in which data writing periods and display periods are divided in time.

First, when a voltage of 150 V to 300 V is supplied between the scan sustain electrode Y and the address electrode X in an arbitrary discharge cell, lighting is performed inside the cell located between the scan sustain electrode Y and the address electrode X. (Writing) A discharge occurs so that wall charges are formed on the inner surface of the discharge space and remain as wall charges on the dielectric layer 12.

In the cells selected by the address discharge, sustain discharge is caused by an AC signal supplied to the common sustain electrode Z and the scan sustain electrode Y, and an electric field is generated in the cell by the discharge, whereby trace electrons in the discharge gas are generated. Accelerates.

Neutral particles in the accelerated electrons and gas collide with each other and are ionized to electrons and ions.Neutral particles are gradually ionized to electrons and ions due to another collision between the ionized electrons and the neutral particles, and the discharge gas is in a plasma state. At the same time, vacuum ultraviolet rays are generated.

The ultraviolet rays generated as described above excite the R, G, and B fluorescent layers 23 to generate visible light, and the visible light is emitted to the outside through the front substrate 10 to emit light of an arbitrary cell from outside. The image can be recognized.

The plasma display panel has an exhaust and injection process as shown in FIG. 3. The process is briefly described as follows.

As shown in FIG. 3, the exhaust pipe 40 is installed on the rear substrate 20, and the rear substrate 20 and the front substrate 10 are sealed with a frit glass 30 in the firing furnace and bonded to each other.

The bonding process is a method of aligning and heating the positions of the front substrate 10 and the rear substrate 20 in a state where the frit glass 30 is applied between the front substrate 10 and the rear substrate 20 in a vacuum firing furnace. Is done.

In order to make the interior of the plasma display panel into a vacuum state, the internal air is exhausted and a discharge gas is injected. The exhaust gas is discharged due to the partition wall 21 formed between the front substrate 10 and the rear substrate 20. And a long time for injection.

In other words, the exhaust and injection time takes a long time has emerged as a fatal problem in the mass production of the plasma display panel.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method and apparatus for evacuating and injecting a plasma display panel which can shorten the evacuation and injection time.

1 is a view for explaining the structure of a conventional three-electrode alternating surface discharge plasma display panel.

2 is a view for explaining the operation of the conventional plasma display panel.

3 is a view for explaining a conventional exhaust and injection process.

4 is a view for explaining a method and a device for evacuating and injecting a plasma display panel according to the present invention;

5 is a view for explaining another embodiment of a method of evacuating and injecting a plasma display panel and an apparatus thereof according to the present invention;

<Explanation of symbols for main parts of drawing>

10; Front substrate 12; Dielectric layer

13; Protective layer 20; Backplane

21; Bulkhead 22; Dielectric layer

23; Fluorescent layer 40; vent pipe

30; Fritglass 50; Vacuum pump

51; Adsorption plate 52; Pump pipe

53; Cylinder or motor 54; Micrometer

B; Black layer X; Address electrode

Y; Scan sustain electrode Ya; Transparent electrode

Yb; Bus electrode Z; Common holding electrode

Za; Transparent electrode Zb; Bus electrode

Exhaust and injection device of the plasma display panel according to the present invention is attached to one side of the front substrate or the rear substrate, the suction plate is formed between the front substrate or the rear substrate and the suction plate is connected to the suction plate and the pump pipe And a vacuum pump for allowing a predetermined vacuum state between the front substrate or the rear substrate and the suction plate.

In addition, the exhaust and injection device of the plasma display panel according to the present invention is characterized in that the suction plate attached to one side of the front substrate or the rear substrate, and the suction plate pull means coupled to the suction plate and pulling the suction plate with a predetermined force do.

In addition, the method of exhausting and injecting a plasma display panel according to the present invention includes the steps of forming an exhaust pipe on one side of the rear substrate, sealing the rear substrate and the front substrate, and an adsorption plate on one side of the rear substrate or the front substrate. And exhausting and injecting the inside of the plasma display panel through the exhaust pipe while maintaining a predetermined degree of vacuum between the adsorption plate and the rear substrate or the front substrate.

In addition, the method of exhausting and injecting a plasma display panel according to the present invention includes the steps of forming an exhaust pipe on one side of the rear substrate, sealing the rear substrate and the front substrate, and an adsorption plate on one side of the rear substrate or the front substrate. And attaching and pulling the suction plate with a predetermined force, and exhausting and injecting the inside of the plasma display panel through the exhaust pipe.

Hereinafter, a method and apparatus for evacuating and injecting a plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a view for explaining a method and a device for evacuating and injecting a plasma display panel according to the present invention.

As shown in FIG. 4, the exhaust pipe 40 is installed at one side of the rear substrate 20, and the front substrate 10 and the rear substrate 20 are efficiently exhausted and injected in a state in which the frit glass is sealed by frit glass. A method and apparatus for proceeding are presented.

The reason why the exhaust speed is a problem in the past is because the partition 21 is formed between the front substrate 10 and the rear substrate 20, and the delay of the exhaust and injection time is caused by the partition 21. In particular, the center portion of the plasma display panel has the most problem of the exhaust and injection efficiency.

As shown in the figure, the present invention provides an exhaust and injection method and apparatus therefor that can reduce the exhaust and injection time by using the vacuum pump 50 and the suction plate 51.

The adsorption plate 51 is attached to one side of the front substrate 10 or the rear substrate 20, and in particular, the adsorption plate 51 may be adsorbed to the center portion of the panel in consideration of delaying the injection and exhaust time of the center portion of the panel. .

The adsorption plate 51 is connected to the vacuum pump 50 through the pump pipe 52, and the inside of the adsorption plate 51 is in a vacuum state according to the operation of the vacuum pump 50 and the front substrate 10 and The spaces between the partitions 21 are minutely spaced apart.

That is, a predetermined exhaust space is formed between the front substrate 10 and the partition wall 21 while the space between the suction plate 51 and the front substrate 10 or the rear substrate 20 is in a predetermined vacuum state. .

As such a space for injection and exhaust is secured between the front substrate 10 and the partition wall 21, the injection and exhaust may be efficiently performed through the exhaust pipe 40 installed on one side of the rear substrate 20. .

In this case, the space between the front substrate 10 and the partition wall 21 may be adjusted according to the degree of vacuum inside the suction plate 51 formed by the operation of the vacuum pump 50.

5 is a view for explaining a method of evacuating and injecting a plasma display panel according to the present invention and another embodiment thereof.

As shown in FIG. 5, another embodiment of the present invention proposes an exhaust and injection method and an apparatus thereof, which can reduce the exhaust and injection time by using a cylinder or a motor 53 and a suction plate 51.

The adsorption plate 51 is attached to one side of the front substrate 10 or the rear substrate 20, and in particular, the adsorption plate 51 may be adsorbed to the center portion of the panel in consideration of delaying the injection and exhaust time of the center portion of the panel. .

The suction plate 51 is connected to the cylinder or the motor 53, and the front plate 10 is driven by the mechanical force of the cylinder or the motor 53 in a state in which the suction plate 51 is attached to the front substrate 10. ) And the partition wall 21 to be spaced apart by a predetermined interval so that the exhaust and injection space is provided.

At this time, the difference from the embodiment described in FIG. 4 is that the front substrate 10 and the partition wall 21 is separated by the force of vacuum, while in the embodiment described in FIG. 5, the suction plate 51 is pulled by the mechanical force. As a result, a predetermined space is formed between the front substrate 10 and the partition wall 21.

However, the method of pulling the suction plate 51 may be configured in various ways. For example, a motor and a cylinder may be used, or a method of directly pulling the suction plate 51 may be used.

As such a space for injection and exhaust is secured between the front substrate 10 and the partition wall 21, the injection and exhaust may be efficiently performed through the exhaust pipe 40 installed on one side of the rear substrate 20. .

At this time, the space between the front substrate 10 and the partition wall 21 can be confirmed using the micrometer 52, thereby adjusting the mechanical force of the cylinder or motor 53.

6 is a view for explaining that the adsorption plate is combined with the plasma display panel in the exhaust and injection device of the plasma display panel according to the present invention.

As shown in FIG. 6, the adsorption plate 51 is attached to the front substrate 10 of the plasma display panel, and the front substrate 10 and the partition wall are spaced apart from each other by using a vacuum pump or a suction plate pulling means.

In the production of the plasma display panel, the most problematic part of exhaust or injection is at the center of the panel, and therefore, it is preferable to attach the adsorption plate 10 to the center of the panel as shown in the drawing.

Of course, the adsorption plate 10 may be used by being attached to the rear substrate 20 as well as the front substrate 10.

The present invention is not limited to the above embodiments, and various methods may be proposed as a method for improving the exhaust and injection efficiency by forming a predetermined space for exhaust and injection between the front substrate and the partition wall. Of course, it is obvious to those skilled in the art to fall within the scope of technical thought.

The method and apparatus for evacuating and injecting a plasma display panel according to the present invention allow a predetermined exhaust space to be formed between the front substrate and the partition wall, thereby dramatically reducing the exhaust and injection time, which is the biggest problem in mass production of the plasma display panel. There is an advantage that can be shortened.

Claims (7)

An adsorption plate attached to one side of the front substrate or the rear substrate and having a predetermined space formed between the front substrate and the rear substrate; And a vacuum pump connected to the suction plate and the pump tube and configured to have a predetermined vacuum state between the front substrate or the rear substrate and the suction plate. Adsorption plate attached to one side of the front or rear substrate, And a suction plate pulling means coupled to the suction plate and pulling the suction plate with a predetermined force. The method of claim 2, The suction plate pulling means is an exhaust and injection device of the plasma display panel, characterized in that using a cylinder or a motor. The method of claim 2, And a measuring means for measuring the degree of pulling the front substrate or the rear substrate by the adsorption plate. The method of claim 2, And a micrometer for measuring the degree to which the front substrate or the rear substrate is pulled by the adsorption plate. Forming an exhaust pipe on one side of the rear substrate; Sealing the rear substrate and the front substrate; Attaching an adsorption plate to one side of the rear substrate or the front substrate and maintaining a predetermined degree of vacuum between the adsorption plate and the rear substrate or the front substrate and exhausting and injecting the inside of the plasma display panel through the exhaust pipe; A method of evacuating and injecting a plasma display panel. Forming an exhaust pipe on one side of the rear substrate; Sealing the rear substrate and the front substrate; Attaching an adsorption plate to one side of the rear substrate or the front substrate, pulling the adsorption plate with a predetermined force, and exhausting and injecting the inside of the plasma display panel through the exhaust pipe; Injection method.