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Liquid crystal display screen hollow cell cleaning process before crystal filling

A liquid crystal display and empty box technology, applied in cleaning methods and appliances, cleaning methods using gas flow, drying solid materials, etc., can solve the problem of inapplicability, inability to remove conductive ion pollution in empty box seals, and inability to remove empty box water vapor , turbid gas and other problems, to achieve the effect of thorough removal, improvement of product quality and product yield, and simple and convenient removal work

Inactive Publication Date: 2012-04-18
DONGGUAN FAIR LCD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned process is not suitable for cleaning liquid crystal displays such as TFTs and LCDs before filling the empty box. It cannot remove water vapor and turbid gas in the empty box, nor can it remove the conductive ion pollution of the empty box seal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A kind of liquid crystal display screen empty cell cleaning process before filling crystal of the present invention, comprises the following steps,

[0022] Heating step: place the liquid crystal display empty box in the oven cavity of a vacuum oven capable of vacuumizing and filling the oven cavity with nitrogen, and heat the vacuum oven so that the oven cavity of the vacuum oven and the liquid crystal display empty box The water vapor remaining in the liquid crystal is evaporated, and the water vapor remaining in the liquid crystal display box is removed;

[0023] Among them, the vacuum oven is a vacuum oven produced by Lingdi Machinery; in the heating step, the vacuum oven is heated to 50°C-140°C, and the heating time is 100-200min.

[0024] One-time vacuuming step: vacuumize the cavity of the vacuum oven, and extract the water vapor, turbid gas and dirt from the sealing part of the liquid crystal display empty box;

[0025] Wherein, in one vacuuming step, the vacuu...

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PUM

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Abstract

The invention discloses a liquid crystal display screen hollow cell cleaning process before crystal filling. A liquid crystal display screen hollow cell is sequentially subjected to baking, primary vacuumization, primary nitrogen filling, secondary vacuumization and secondary nitrogen filling through a vacuum oven so as to effectively remove vapor and turbid gas in the liquid crystal display screen hollow cell and dirt on the seal; therefore, the removing work is simple and convenient, is easy to implement, and is thorough, adverse phenomena such as crystal filling bubbles, seal pollution, heavy current and the like after the crystal filling of the liquid crystal display screen hollow cell are prevented, and the product quality and yield of liquid crystal display screens are improved.

Description

technical field [0001] The invention relates to the technical field of cleaning technology for empty liquid crystal display boxes, in particular to a cleaning process for empty liquid crystal display boxes before filling. Background technique [0002] In the prior art, TFT, LCD and other liquid crystal displays often have adverse phenomena such as filling bubbles, sealing pollution, and high current after filling. Gas; 2. There is conductive ion pollution at the seal of the empty box. [0003] In order to solve this technical problem, there is a technical solution of spinning and drying in the prior art, such as the Chinese patent with the patent application number "96111460.6" and the patent name "cleaning and drying method and device". The process steps include: water or solvent After cleaning, the object to be cleaned is rotated, and the rotation generates an air flow from the rotation center of the object to be cleaned along the front and back of the object to the outer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B5/04F26B7/00
Inventor 马成洪
Owner DONGGUAN FAIR LCD