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Method and apparatus for sealing and air exhaust of large size plasma display screen

A technology of plasma display screen and exhaust device, which is used in the manufacture of electrical components, discharge tubes/lamps, and cold cathode manufacturing, etc., can solve the problem of long exhaust and heating time, unsafe exhaust tail pipes, and no guarantee of safety. and other problems, to achieve the effect of improving safety, improving exhaust effect, and saving working gas

Inactive Publication Date: 2009-01-21
NANJING HUAXIAN HIGH TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the unsafe exhaust tailpipe existing in the process of vacuum heating and exhausting after the front and rear glass substrates are sealed together in the existing plasma display screen manufacturing process. Once damaged, the display screen will be scrapped and exhausted. The air efficiency is not high, the exhaust and heating time is very long, the energy is wasted, and the safety is not guaranteed. A method and device for sealing and exhausting large-scale plasma display screens are provided, which can realize efficient exhaust and save energy at the same time. Waste working gas without reducing the safety of the screen

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  • Method and apparatus for sealing and air exhaust of large size plasma display screen
  • Method and apparatus for sealing and air exhaust of large size plasma display screen

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Embodiment Construction

[0023] Attached below figure 1 , 2 And embodiment the present invention is described further.

[0024] A method for sealing and exhausting large-scale plasma display screens of the present invention comprises the following steps:

[0025] First, put the clamped front and rear glass substrates 5 into the vacuum heating container 1, so that the exhaust holes 8 and the filling / exhaust holes 3 on the rear glass substrate are respectively connected with the preset push rods 4 in the vacuum heating container 1. The glass cover 7 is aligned with the gas filling tube 6; secondly, open the exhaust system 11 and start to exhaust the vacuum heating container 1, the gas between the front and rear glass substrates 5 is discharged through the exhaust hole, and open the heater at the same time to start the vacuum heating container. 1 internal heating, third, when the internal temperature rises to the highest temperature, the compressed air cylinder (14) pushes the preset push rod 4, so tha...

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Abstract

The invention relates to a device and a method of sealing and exhausting a large-scale type plasma display screen. The invention is characterized in that a plurality of vent holes (8) and an inflating / exhausting hole(3) are arranged on a rear base plate of the plasma display screen, heating a clamped front and a clamped rear glass base plates (5) through arranging the plates in a vacuum heating container (1), and simultaneously carrying out the vacuum exhausting to the vacuum heating container (1), after the temperature is increased and is kept for certain time, the temperature begins to reduce, glass cover plates (7) are used to seal the vent holes (8), and an inflation tube (6) is connected on the inflating / exhausting hole (3), when the temperature is reduced to the indoor temperature, the inflation tube (6) is pumped with working gas, and then the screen sealing process is completed after the inflation tube (6) is sealed. The invention has the advantages that the energy sources and the working gas are saved, and simultaneously, the safety of the plasma display screen can not be reduced.

Description

technical field [0001] The present invention relates to a method and a device for sealing and exhausting a display screen, in particular to a method and a device for sealing and exhausting a large-size flat panel display screen, in particular to a method for sealing and exhausting a large-size plasma display screen and devices. Background technique [0002] At present, in the manufacturing process of the plasma display screen, it includes the process of sealing the front glass and the rear glass with an exhaust pipe and then vacuum heating and exhausting the inside of the front and rear glass substrates through the exhaust pipe. After the temperature drops to room temperature, the discharge working gas is filled into the panel through the exhaust pipe to the set pressure value, and then the exhaust pipe is sealed off. Especially for large-size plasma displays above 50", in order to make the vacuum exhaust in the middle of the panel more thorough, two exhaust pipes are usual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/38
Inventor 孙青云朱立锋王保平林青园李霞
Owner NANJING HUAXIAN HIGH TECH CO LTD
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