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Low penning gas loss sealing-in exhausting and gas-filling vacuum system for PDP

A vacuum system, low-loss technology, applied in the manufacturing field, to achieve the effect of reducing production costs, good economic promotion benefits, and obvious inflatable space

Inactive Publication Date: 2014-04-16
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mass production utilization rate of Penning discharge gas is only about 20%

Method used

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  • Low penning gas loss sealing-in exhausting and gas-filling vacuum system for PDP
  • Low penning gas loss sealing-in exhausting and gas-filling vacuum system for PDP

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] The vacuum system provided by the present invention performs PDP sealing, degassing, inflating and then sealing off. The main steps of making are as follows:

[0021] After the PDP is sealed and fully baked and exhausted to the specified vacuum degree, close the main vacuum valve and fill the vacuum system with Penning discharge gas at a certain rate until the pressure reaches 360Torr;

[0022] Seal off the PD that has been inflated;

[0023] Remove the remaining Penning discharge gas in the vacuum system, and the system returns to vacuum state.

[0024] Through the above-mentioned conventional process to manufacture plasma display screens, the volume of the main pipe of the original conventional sealing and charging vacuum system that needs to be filled with Penning gas is about 17.7L, which is reduced to about 2.4L after adopting the structure of the sealing and charging vacuum system of the present invention; PDP is inflated Branch pipe volume (fixed gas loss) is ab...

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PUM

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Abstract

The invention discloses a low penning gas loss sealing-in exhausting and gas-filling vacuum system for a PDP. The system comprises a gas-filling device, a main vacuum exhaust system and vacuum busbars. Vacuum isolating devices are arranged between the vacuum busbars and the main vacuum exhaust system, the gas-filling device is connected with the vacuum busbars through vacuum pipelines, and the main vacuum exhaust system is isolated from the vacuum busbars through the vacuum isolating devices. In a gas-filling process, what is only needed is to inject gas into the vacuum busbars directly, loss of the gas in the main vacuum exhaust system is reduced, 75% of loss can be saved through calculation, production cost is greatly lowered, and good economical popularization effects are achieved.

Description

technical field [0001] The invention relates to a sealing and exhausting and gas-charging vacuum system for gas discharge devices, in particular to the technical field of manufacturing gas discharge devices such as plasma display panels (PDP). More specifically, it relates to a structure of a gas-filling vacuum system suitable for plasma display panel (PDP) production with low Penning gas loss. Background technique [0002] In the manufacturing process of plasma display panel (PDP), it is one of the key processes of PDP to complete the sealing, vacuuming and exhausting of the PDP panel in the sealing furnace and filling with Penning discharge gas. The existing sealing and gas filling technology is to fill the internal space of the PDP panel with Penning discharge gas through the vacuum system after the PDP panel is sealed and vacuumed. During this process, the entire internal space of the vacuum system will be filled with Penning discharge gas and balanced with the air pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/38
Inventor 周辉
Owner SICHUAN COC DISPLAY DEVICES
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