KR100568480B1 - Method for manufacturing Plasma Display Panel by ventilation in vacuum chamber - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum exhaust type manufacturing method of a plasma display panel, comprising a front process of forming a front plate and a back plate, a post process of joining them into one panel and injecting gas after vacuum exhaust and sealing, and the panel In the post-process of the vacuum exhaust system consisting of a module process for mounting a circuit on a surface, an aligning and clipping process including a tip-type sealed injection tube crimping and a normal pressure is applied to the panel until a predetermined temperature is reached. Atmospheric pressure heating step of raising the temperature under the first step, Exhaust sealing process of heating the panel again in a vacuum chamber until reaching a certain temperature, exhausting the pressure through the frit glass gap between the panels, and sealing under pressure. Atmospheric pressure cooling to cool in the furnace, the tip of the injection tube is cut in the vacuum chuck and the discharge gas is injected through the It characterized in that it comprises a discharge gas injection and tip-off process for sealing the tip portion. Therefore, by performing a part of the temperature raising process for sealing to reach a predetermined temperature under normal pressure, and then performing only the remaining temperature raising process in the vacuum chamber, the problem of temperature non-uniformity acting on the panel can be largely solved, and the process time is reduced. It can shorten the mass production of the product and reduce the production cost.

Plasma Display Panel (PDP), Exhaust, Sealing, Exhaust Pipe, Injection Pipe

Description

Method for manufacturing Plasma Display Panel by ventilation in vacuum chamber

1 shows each step included in a post-process for manufacturing a vacuum exhausted PDP according to the present invention, the temperature change of the PDP panel in each step (a), the change in vacuum degree in the vacuum chamber (b) and the inside of the PDP panel. It is a process chart which shows the vacuum degree change (c) diagrammatically.

2 is a schematic cross-sectional view showing an example of the exhaust and gas injection structure of the PDP panel applied to the vacuum exhaust PDP manufacturing process of the present invention.

<Description of Symbols for Major Parts of Drawings>

10; Front Plate 11; Transparent / Bus Electrode

12, 22; Dielectric layer 13; Protective layer

20; Back Plate 21; Signal Electrode

23; Barrier rib 24; Phosphor layer

30; Injection tube 31; Tip part

32; Incision 40; Frit Glass

50; vent pipe

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum exhaust method for manufacturing a plasma display panel, and more particularly, in a vacuum exhaust method by a series of post-processes in which gas is injected and tip-off after exhausting and sealing a panel under vacuum and cooling under normal pressure. In order to solve the problem of temperature irregularity acting on the panel, it is possible to reduce the production time and reduce the production cost by performing the temperature raising process for each temperature under normal pressure and vacuum based on the predetermined temperature. A vacuum exhaust method for manufacturing a plasma display panel is provided.

In general, a plasma display panel has a structure in which two electrodes are arranged in a grid shape inside a flat gas encapsulation panel, and gas is generated by selecting an arbitrary point of the grid to start electrode voltage. It is an advanced thin film flat panel display device that is ionized to emit light in a display shape such as a predetermined character or figure.

The manufacturing process of the PDP is a step of forming an electrode, a phosphor, and the like on a pair of front and back plates processed to a desired screen size, and sealing the front and back plates manufactured by the above steps. And a step of injecting gas in a state where the inside is evacuated, and a module step of mounting a circuit on the surface of the plywood panel.

By the way, in the post-process of the entire PDP manufacturing process as described above, the sealed exhaust process takes a long time (more than 2 hours for sealing, 14 hours or more for sealing) due to its low conductivity, so PDP It is well known that it is pointed out as one of the biggest obstacles to increase productivity, and the high defect rate is urgently required to improve the process and equipment. In other words, due to the long time required for the encapsulation exhaust process, congestion is caused in the flow of the entire process, and thus the productivity of the PDP is determined by this process. In particular, the encapsulation and exhaust process is highly dependent on the device, and thus, the development of a breakthrough device is required, and it can be said to be the focus of attention of all PDP manufacturers.

Currently, the most widely applied sealed exhaust method is using an exhaust cart device. However, such a cart-type sealed exhaust method separates the sealing process from the exhaust process to reduce space efficiency, and as described above, It does not overcome the problems such as long lead time, low yield and exhaust efficiency, and high energy consumption.

As one of methods for solving the above problems, a method of manufacturing PDP in a vacuum chamber using a vacuum chamber apparatus has been proposed as an alternative, and research on this is currently in full swing. The vacuum sealing device is a method in which the sealing is performed after first evacuating the inside of the vacuum chamber, and a shortening of the exhaust time is possible by performing the evacuation step before the sealing step. That is, in the vacuum exhaust sealing method, a plurality of PDPs aligned and clipped in a horizontal state are charged in a vacuum chamber in which a separate injection pipe for injecting gas into the PDP is drawn out. Vacuum sealing the inside of the tube, and heating and sealing the same, and injecting a light emitting inert gas through the injection tube.

As a related technology, the applicant of the present invention proposed a 'plasma display panel and a manufacturing method thereof' of Patent Application No. 61079 in 2003.

The post-process related to the bonding of the front plate and the back plate of the PDP manufacturing method according to the patent application is to perform a pre-exhaust, post-sealing process in the vacuum chamber, and for complete sealing under atmospheric pressure conditions In order to shorten the process time by performing the cooling process, the technical emphasis is applied, and in order to perform such a process, an injection tube having a structure in which the tip is sealed is applied.

However, in the PDP manufacturing method of the patent application, the thermal conductivity is compared to the normal pressure by proceeding the temperature heating process for the exhaust and sealing under vacuum by directly inserting the panel bonded by aligning and clipping the front plate and the back plate into the vacuum chamber Due to the characteristics of the vacuum which is not smooth, much time must be secured to raise the temperature to a proper temperature, which causes a considerable delay in the overall process time.

In addition, there is a problem that the production cost increases by increasing the working time in the vacuum chamber by the delay of the process time.

The present invention has been made to solve the above-mentioned problems, the object of the present invention is to provide a vacuum exhaust system by a series of post-processing step of gas injection and tip-off after exhausting and sealing the panel under vacuum and cooling under normal pressure In this case, a part of the temperature raising step for sealing is performed under normal pressure until reaching a predetermined temperature and under vacuum after reaching a predetermined temperature, thereby significantly reducing the problem of temperature unevenness on the panel during panel heating in vacuum working conditions. The method of manufacturing a vacuum exhaust panel of plasma display panel can be partially eliminated, the process time required for heating the panel can be shortened, and the mass production of the product can be realized, and the production cost can be reduced by minimizing the use time of the vacuum chamber. In providing.

Vacuum exhaust method for manufacturing a plasma display panel according to a preferred embodiment of the present invention for achieving the above object, the electrode and the frit glass, phosphor and the like formed on a pair of front and back plates processed to a desired screen size A pre-process, a post-process of joining the front plate and the back plate manufactured by the above process, vacuum evacuation and sealing, injecting gas, and tip-off by injecting gas; In the vacuum exhaust type manufacturing method of the plasma display panel which consists of a process, the said post process arrange | positions the said front plate and a back plate by superimposing under normal pressure, the edge part is crimp-fixed with a clip, and the residual impurity gas is carried out on the back plate. Independently crimping and fixing each of the open end pipe for discharge and the closed tip injection pipe for discharge gas injection Aligning dining and clipping step of laminating to one of the open panel; An atmospheric pressure heating step of initially raising the panel under normal pressure until a predetermined temperature is reached so as to minimize temperature nonuniformity acting on the panel when the panel is heated under vacuum; The panel was first heated under normal pressure in a vacuum chamber in a high vacuum atmosphere, and the panel was heated again until it reached a specific temperature under vacuum, and the inside of the panel was vacuumed through the gap of the frit glass between the front plate and the back plate. An exhaust sealing step of sealing the pressure after allowing it to be exhausted; An exhaust pipe tip-off process for sealing the inside of the panel by sealing the tip of the exhaust pipe so as to perform atmospheric pressure cooling; An atmospheric pressure cooling step of taking out the panel encapsulated from the vacuum chamber and injecting it into an atmospheric pressure slow cooling furnace to cool it to an atmospheric pressure state, and a tip portion of the injection tube to inject discharge gas into the atmospheric pressure cooled panel; Discharge gas injection and tip-off process of cutting in the vacuum chuck of the gas injection device and injecting the discharge gas through the open injection pipe, and encapsulating the tip of the injection pipe; It characterized in that it comprises an aging step of pre-discharge so that the physical properties of the cell, such as to stabilize.

Here, the atmospheric pressure heating step is carried out in the atmospheric pressure hot air heating furnace from the normal temperature to a predetermined temperature set between 300 to 350 ° C, and the vacuum heating for the exhaust sealing process is heated in conjunction with the specified temperature to 430 to 480 It is preferred to be carried out in a vacuum chamber up to a specific sealing temperature defined between &lt; RTI ID = 0.0 &gt;

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In addition, the vacuum exhaust type manufacturing method of the plasma display panel according to another embodiment of the present invention for achieving the above object, the electrode and the frit glass and the phosphor on a pair of front and back plates processed to a desired screen size A pre-process of forming a step, a post-process of joining the front plate and the back plate manufactured by the above step, vacuum evacuation and sealing, and then injecting gas and tip-off, and mounting a circuit on the surface of the plywood panel. In the vacuum exhaust type manufacturing method of the plasma display panel consisting of a modular process, the post-process, the front plate and the back plate are superimposed under normal pressure to align, and the edge portion is pressed and fixed with a clip, and one side of the back plate Aligning and clipping process that press-fixes the tip-type open-type exhaust and gas injection inlet pipe to the one side through the panel And an atmospheric pressure heating process in which the panel is first heated up under atmospheric pressure to reach a predetermined temperature so as to minimize temperature non-uniformity acting on the panel when the panel is heated under vacuum; Into the vacuum chamber of the atmosphere, the panel is heated again under a vacuum until a certain temperature is reached, and the inside of the panel is evacuated through the gap of the frit glass between the front plate and the back plate, and then pressure-sealed. A first injection pipe tip-off step for sealing the inside of the panel by sealing the tip of the exhaust and gas injection injection pipe so as to perform atmospheric pressure cooling; and to seal the panel sealed from the vacuum chamber. An atmospheric pressure cooling step of taking out the liquid, and then putting it in an atmospheric pressure cooling furnace to cool it to an atmospheric pressure state; Discharge the tip portion of the injection tube in the vacuum chuck of the gas injection device to inject the discharge gas into the inside of the gas injection device and injects the discharge gas through the open injection tube, and then refills the tip of the injection tube And an aging step of pre-discharging the gas injection and tip-off process and the activation of the film surface in the panel and stabilization of physical properties of each cell.

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

1 and 2 are for explaining the PDP manufacturing method according to the present invention, Figure 1 is a step included in the post-process for producing a vacuum exhaust PDP according to the present invention, and the temperature of each step PDP panel Fig. 2 is a process diagram showing the change (a), the change in the vacuum degree inside the vacuum chamber (b) and the change in the vacuum degree inside the PDP panel (c), and Fig. 2 shows the exhaust of the PDP panel applied to the vacuum exhaust type PDP manufacturing process of the present invention. And schematic cross-sectional views showing an example of the gas injection structure.

First, the PDP applied during the post-process of the PDP manufacturing method according to the present invention has a structure in which the front plate 10 and the back plate 20 are bonded at predetermined intervals, as shown in FIG. The transparent / bus electrode 11, the dielectric layer 12, and the protective layer 13 are laminated on the inner surface of the plate 10, and the signal electrode 21 and the dielectric layer 22 are formed on the inner surface of the back plate 20. ) And a plurality of barrier ribs 23 and the phosphor layer 24 are laminated to each other, and an injection tube 30 for protruding discharge gas is formed to protrude from one side thereof, and the front plate 10 and the back plate 20 The circumference forms the structure sealed by the frit glass 40 which has a low melting point characteristic.

At this time, the injection pipe 30 of the PDP according to the present invention can be applied in various forms. That is, the tip portion 31 of the injection pipe 30 is applied as a sealed structure, when not considering the discharge of residual impurity gas generated in the sealing process, it is also possible to simply consist of the sealed injection pipe 30 only In addition, when considering the discharge of residual impurity gas generated in the sealing process as shown in FIG. 2, an exhaust pipe 50 having an open tip structure for discharging the residual impurity gas in the sealing process should be formed separately.

Here, it is preferable that the cutout portion 32 is formed around the tip portion 31 of the hermetic injection tube 30 so as to be easily cut and opened when the discharge gas is injected into the panel. For example, as the structure of the cutout portion 32, as shown in the drawing may be a notch-shaped cutting groove to form a fragile portion that is easy to cut, the tip portion 31 itself to a thin thickness than the injection tube body By forming a long bottleneck shape, it is possible to form a weak spot that is easy to cut. In addition, various similar incision structures may be applied.

In addition, when another injection tube structure applied to the PDP according to the present invention is applied to a single injection tube (or may be referred to as a 'single exhaust pipe'), which combines the discharge of residual impurity gas and the injection of discharge gas, FIG. Although not shown, the tip portion of the injection tube should be configured to open structure.

The PDP manufacturing process according to the preferred embodiment of the present invention to which the various process panels are applied is as shown in FIG. 1. 1 is related to the improvement of the post process of the entire process consisting of the existing pre-process and the post-process and the module process, the description will be omitted because the previous process and the module process is the same as the conventional general process.

Hereinafter, an embodiment of the case of applying a panel in which the sealed injection pipe 30 and the open exhaust pipe 50 are separately formed as shown in FIG. 2 will be mainly described. The post-process of the present invention, when performing the pre-exhaust, post-sealing process in the vacuum chamber, the designation between 300 to 350 ℃ in the atmospheric pressure hot air heating furnace as a step before the vacuum evacuation Heating to a temperature, such as about 350 ° C. first, followed by heating in conjunction with the specified temperature in a vacuum chamber and again heating to a specific sealing temperature, eg 450 ° C., defined between 430 to 480 ° C. After the vacuum sealing is completed, an exhaust pipe tip-off process of encapsulating the tip of the exhaust pipe 50 to seal the panel to be cooled at atmospheric pressure is added.

Therefore, the post process according to the present invention in the panel in which the hermetic injection pipe 30 and the open exhaust pipe 50 are separately formed includes an aligning and clipping process, an atmospheric pressure heating process, a vacuum heating, an exhausting and sealing process. And the tip off step of the exhaust pipe 50, the atmospheric pressure cooling step, the injection of the discharge gas after the cutting of the tip part 31 of the injection pipe 30, the tip off step of the injection pipe 30, and the aging step Each step is made up.

First, in the alignment and clipping process, the front plate 10 and the back plate 20 overlap and align under normal pressure, and the edge portion is pressed and fixed with a clip, and the end portion is formed in the through hole on one side of the back plate 20. A step of pressing and fixing the hermetic injection tube 30 is performed.

In the aligning and clipping process, the method may further include independently pressing and fixing the tip pipe-type exhaust pipe 50 for discharging residual impurity gas to the back plate 20 of the panel, in this case, which will be described later. After the exhaust sealing step to be carried out further comprises an exhaust pipe tip off process for sealing the panel to perform atmospheric pressure cooling.

As a next step, the atmospheric heating step is a step of raising the panel first under normal pressure until a predetermined temperature is reached so as to minimize temperature nonuniformity acting on the panel when the panel is heated under vacuum. The atmospheric pressure heating step is carried out in an atmospheric pressure hot air heating furnace, for example, from a normal temperature to a temperature of 350 ° C.

As a next step, the exhaust encapsulation process includes putting the first heated panel under normal pressure into a vacuum chamber in a high vacuum atmosphere, and heating the panel again until a specific temperature is reached under vacuum, and the front plate 10 and the rear surface. The pressure inside the panel is allowed to be evacuated through the gap of the frit glass 40 between the plates 20, and then pressure sealed. Vacuum heating for the exhaust sealing process is carried out in a vacuum chamber, for example, from a temperature of 350 ° C or higher to a temperature of 450 ° C.

The heating process in the exhaust and sealing is for melting the frit glass 40 to fuse the front plate 10 and the back plate 20, and the exhaust process is performed at the tip portion of the injection pipe 30. 31) is in a sealed state and proceeds through a minute gap formed between the curved surface of the frit glass 40 before the complete fusion and the inner surface of the front and rear plates 10 and 20 in contact with it, such a vacuum After the exhaust process is completed, the front and back plates 10 and 20 are pressed to seal in a vacuum state.

At this time, in the exhaust sealing step, it is ideal to arrange each of the input panels vertically so as to improve the exhaust efficiency inside the panel through the fine gap of the frit glass 40 under the high vacuum in the vacuum chamber, the panel is sealed Since a small amount of impurity gas remaining in the panel during the complete solidification process of the heavy frit glass 40 can be completely discharged through the exhaust pipe 50, the quality of the final product can be improved.

For reference, the reason for performing the atmospheric heating process up to 300 to 350 ° C. (the temperature range is empirically calculated in consideration of the expected error according to the state inside the panel) is due to moisture and impure gas adsorbed inside the panel. This is because degassing is most smoothly in the vicinity of this temperature range, and the exhaust gas is concentrated so that the exhaust characteristics due to the atmospheric pressure environment can be improved. Therefore, the temperature uniformity of the panel is increased by 10 ° C / min. It is heated under normal pressure, which shows a small deviation of ± 5 ℃, to increase the gas activity inside the panel, and after that, it maintains the vacuum state in the vacuum chamber for a certain time, and heats up the temperature so that the inside of the panel can be highly vacuumed in a shorter time than before. will be.

Typically, the temperature uniformity of the panel under vacuum has a deviation of about 10 ° C / min temperature rise ± 10 ° C it can be seen that the temperature increase rate is significantly lower than the normal pressure environment.

As a next step, the tip off process of the exhaust pipe 50 is performed. This step is, of course, unnecessary if no separate exhaust pipe 50 is provided.

After the sealing is completed in the vacuum state as described above, the atmospheric pressure cooling step of taking out the panel from the vacuum chamber and injecting it into an atmospheric pressure slow cooling furnace to cool it to an atmospheric pressure state is performed. Since the PDP of the present invention forms a hermetic injection tube 30 structure, it is possible to move and process the atmospheric pressure slow cooling furnace without maintaining the surrounding atmosphere at high vacuum after vacuum sealing, and thus cooling in the high vacuum chamber. It is possible to create a superior cooling atmosphere compared to the conditions it is possible to significantly shorten the process time.

After the atmospheric pressure cooling process is completed, the tip portion 31 of the injection pipe 30 is cut in the vacuum portion in the vacuum chuck of the gas injection device so that the discharge gas can be injected into the panel, and the opening thereof is opened. After the discharge gas is injected through the injection tube 30, the discharge gas injection and tip off process of sealing the tip portion 31 of the injection tube 30 is performed.

After that, all the post-processes according to the present invention are completed by performing the aging step of pre-discharging to activate the surface of the film in the panel and to stabilize the properties of each cell.

On the other hand, although not shown in the drawings, the PDP according to the present invention in the case where a tip-opening single injection tube that combines the discharge of residual impurity gas and the injection of discharge gas is applied as another injection tube structure applied to the present invention. The subsequent steps of the vacuum exhaust method are described below with reference to the respective drawings.

That is, the front plate 10 and the back plate 20 are aligned by overlapping under normal pressure, and the edge portion is pressed and fixed with a clip, and the exhaust and gas injection combined injection of tip opening type is provided in the through-hole on one side of the back plate 20. An aligning and clipping process of pressing and fixing the tube into one panel, an atmospheric pressure heating process of first heating up the panel under normal pressure until reaching a temperature of about 350 ° C., and a first heated panel under normal pressure. In the vacuum chamber of a high vacuum atmosphere, and the panel is heated again until the temperature reaches about 450 ° C. under vacuum, and the gap of the frit glass 40 between the front plate 10 and the back plate 20 is closed. The exhaust sealing process of allowing the inside of the panel to be evacuated through vacuum and then pressurizing and sealing, and sealing the tip portion of the inlet and exhaust gas injection pipe to perform atmospheric pressure cooling A primary injection tube tip-off process for sealing the inside, an atmospheric pressure cooling step of taking out the panel encapsulated from the vacuum chamber and injecting it into an atmospheric pressure slow cooling furnace to cool it to an atmospheric pressure state; Discharge gas injection to cut the tip of the injection pipe in the vacuum chuck of the gas injection device to inject the discharge gas into the furnace, injecting the discharge gas through the open injection pipe and then re-sealing the tip of the injection pipe And a tip-off step and an aging step of pre-discharging to enable activation of the film surface in the panel and stabilization of physical properties of each cell, and the like, thereby achieving the same purpose as in the preceding embodiment. Will be.

As described above, the vacuum exhaust method of manufacturing a PDP according to the present invention, after the aligning and clipping of the front plate 10 and the back plate 20 is completed under normal pressure, vacuum evacuation after the step-up in normal pressure and vacuum And sealing the inside of the panel in a vacuum state, and cooling the sealed panel under normal pressure. Therefore, by evacuating and sealing in a vacuum it is possible to improve the exhaust efficiency and the degree of vacuum inside the panel can exhibit a significant shortening effect of about 2 hours or more in the process time of 10 hours or more and improve the product quality. In addition, by cooling the sealed panel at atmospheric pressure, the cooling efficiency can also be maximized, thereby shortening the process time and eliminating the congestion section during the process, thereby simplifying the equipment and improving the space utilization of the factory.

According to the vacuum exhaust type manufacturing method of the plasma display panel of the present invention as described above, in the vacuum exhaust method by a series of post-process of gas injection and tip-off after exhausting and sealing the panel under vacuum and cooling under normal pressure Particularly, the heating step for sealing is carried out under normal pressure until reaching a predetermined temperature between 300 and 350 ° C., and in a vacuum chamber, in conjunction with the above-mentioned heating temperature, it is heated up to a specific sealing temperature between 430 and 480 ° C. By only raising the temperature, the problem of temperature unevenness acting on the panel during heating of the panel under vacuum working condition can be largely solved, and the process time required for heating the panel can be significantly shortened to realize mass production of the product. The production cost can be reduced by minimizing the use time of the vacuum chamber. There is an effect.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, this may be regarded as exemplary, and those skilled in the art may conceive various modifications and equivalent embodiments therefrom. It should be understood that such equivalent embodiments are also included within the claims of the present invention. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (4)

delete After the process of forming the electrode, frit glass, phosphor, etc. on the pair of front plate and back plate processed to the desired screen size, the front plate and the back plate manufactured by the above step is bonded, vacuum evacuation and sealing In the vacuum exhaust type manufacturing method of the plasma display panel which consists of a post process of injecting gas and tip-off, and the module process of mounting a circuit on the panel surface of the plywood form, The post-process, The front plate and the back plate are aligned by overlapping under normal pressure, and the edge portion is pressed and fixed with a clip, and the back plate has a tip pipe-type exhaust pipe for discharging residual impurity gas and a tip-type sealed injection pipe for discharge gas injection, respectively. An aligning and clipping process of independently crimping and bonding the panels to a single panel; An atmospheric pressure heating step of initially raising the panel under normal pressure until a predetermined temperature is reached so as to minimize temperature nonuniformity acting on the panel when the panel is heated under vacuum; The panel was first heated under normal pressure in a vacuum chamber in a high vacuum atmosphere, and the panel was heated again until it reached a specific temperature under vacuum, and the inside of the panel was vacuumed through the gap of the frit glass between the front plate and the back plate. An exhaust sealing step of sealing the pressure after allowing it to be exhausted; An exhaust pipe tip-off process for sealing the inside of the panel by sealing the tip of the exhaust pipe so as to perform atmospheric pressure cooling; An atmospheric pressure cooling step of taking out the panel encapsulated from the vacuum chamber and injecting it into an atmospheric pressure slow cooling furnace to cool it to an atmospheric pressure state; The tip portion of the injection tube is cut in the vacuum chuck of the gas injection device so as to inject the discharge gas into the panel which has been subjected to atmospheric pressure cooling, and the discharge gas is injected through the open injection tube, and then the tip of the injection tube Discharge gas injection and tip-off process to seal the portion; And And an aging step of pre-discharging the film surface in the panel and activating the stabilization of physical properties of each cell. 2. The method of claim 2, The atmospheric pressure heating process is carried out in an atmospheric pressure hot air heating furnace from a normal temperature to a predetermined temperature between 300 and 350 ° C., and the vacuum heating for the exhaust sealing process is heated in conjunction with the predetermined temperature between 430 and 480 ° C. Method for manufacturing a vacuum exhaust method of the plasma display panel, characterized in that carried out in the vacuum chamber until a specific sealing temperature determined in the. After the process of forming the electrode, frit glass, phosphor, etc. on the pair of front plate and back plate processed to the desired screen size, the front plate and the back plate manufactured by the above step is bonded, vacuum evacuation and sealing In the vacuum exhaust type manufacturing method of the plasma display panel which consists of a post process of injecting gas and tip-off, and the module process of mounting a circuit on the panel surface of the plywood form, The post-process, Aligning the front plate and the back plate by overlapping under normal pressure and pressing and fixing the edge portion of the back plate with a clip, and by pressing and fixing the tip-opening type exhaust and gas injection inlet pipe to the through-hole of one side of the back plate to adhere to one panel Aligning and clipping processes; An atmospheric pressure heating step of initially raising the panel under normal pressure until a predetermined temperature is reached so as to minimize temperature nonuniformity acting on the panel when the panel is heated under vacuum; The panel heated first under normal pressure is put into a vacuum chamber in a high vacuum atmosphere, and the panel is heated again until it reaches a specific temperature under vacuum, and the inside of the panel is opened through the gap of the frit glass between the front plate and the back plate. An exhaust sealing process of pressurizing and sealing the vacuum exhaust; A primary injection tube tip-off process for sealing the inside of the panel by sealing the tip of the exhaust and gas injection injection pipe so as to perform atmospheric pressure cooling; An atmospheric pressure cooling step of taking out the panel encapsulated from the vacuum chamber and injecting it into an atmospheric pressure slow cooling furnace to cool it to an atmospheric pressure state; The tip portion of the injection tube is cut in the vacuum chuck of the gas injection device so as to inject the discharge gas into the panel which has been subjected to atmospheric pressure cooling, and the discharge gas is injected through the open injection tube, and then the tip of the injection tube A discharge gas injection and tip off step of encapsulating the part again; And And an aging step of pre-discharging the film surface in the panel and activating the stabilization of physical properties of each cell. 2.

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