Comprehensive thinning treatment process for liquid crystal display screen

A liquid crystal display and processing technology, applied in the field of comprehensive thinning processing of liquid crystal display, can solve the problems of different solubility, uneven etching effect, hindering further reaction between hydrofluoric acid and glass, etc. Uniform, easy to observe and handle the effect

Inactive Publication Date: 2020-07-17
滁州东盛电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There will be some defects on the surface of the liquid crystal display during production, and under the uniform thinning method of chemical etching, some defect points on the thinned liquid crystal display will be enlarged, resulting in quality problems of the liquid crystal display, and at the same time chemical reactions generate Due to the difference in solubility of the salts, the crystals produced after the reaction adhere to the glass surface to hinder the further reaction of hydrofluoric acid and glass, thus making the etching effect uneven. Therefore, the present invention proposes a comprehensive thinning treatment for liquid crystal display technology to solve the problems existing in the prior art

Method used

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  • Comprehensive thinning treatment process for liquid crystal display screen

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Effect test

Embodiment 1

[0023] according to figure 1 As shown, this embodiment provides a comprehensive thinning treatment process for liquid crystal display, including the following steps:

[0024] Step 1: Sealing protection, apply a layer of frame glue on the side of the LCD screen, then put the LCD screen into an oven, and dry it for 10-15 minutes at a temperature of 170°C to cure the frame glue , to prevent the etchant from penetrating into the liquid crystal display, and then apply photoresist on the electrode end of the liquid crystal display, put it in an oven, and dry it for 5-15 minutes at a temperature of 70°C to make the photoresist The resist is cured to prevent the etchant from corroding the lead electrodes;

[0025] Step 2: Pretreatment of the liquid crystal display screen, take a concentration of 40% hydrofluoric acid, a concentration of 50% hydrochloric acid and clean water to make a mixed solution, put the liquid crystal display screen into a tank filled with the mixed solution and ...

Embodiment 2

[0035] according to figure 1 As shown, this embodiment provides a comprehensive thinning treatment process for liquid crystal display, including the following steps:

[0036] Step 1: Sealing protection, apply a layer of frame glue on the side of the LCD screen, then put the LCD screen into an oven, and dry it for 10-15 minutes at a temperature of 170°C to cure the frame glue , to prevent the etchant from penetrating into the liquid crystal display, and then apply photoresist on the electrode end of the liquid crystal display, put it in an oven, and dry it for 5-15 minutes at a temperature of 70°C to make the photoresist The resist is cured to prevent the etchant from corroding the lead electrodes;

[0037] Step 2: Liquid crystal display pretreatment, take the hydrofluoric acid with the concentration of 40%, the hydrochloric acid with the concentration of 50% and clean water to make a mixed solution, put the liquid crystal display into the tank with the mixed solution and soak...

Embodiment 3

[0047] according to figure 1 As shown, this embodiment provides a comprehensive thinning treatment process for liquid crystal display, including the following steps:

[0048] Step 1: Sealing protection, apply a layer of frame glue on the side of the LCD screen, then put the LCD screen into an oven, and dry it for 10-15 minutes at a temperature of 170°C to cure the frame glue , to prevent the etchant from penetrating into the liquid crystal display, and then apply photoresist on the electrode end of the liquid crystal display, put it in an oven, and dry it for 5-15 minutes at a temperature of 70°C to make the photoresist The resist is cured to prevent the etchant from corroding the lead electrodes;

[0049] Step 2: Pretreatment of the liquid crystal display screen, take a concentration of 40% hydrofluoric acid, a concentration of 50% hydrochloric acid and clean water to make a mixed solution, put the liquid crystal display screen into a tank filled with the mixed solution and ...

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Abstract

The invention discloses a comprehensive thinning treatment process for a liquid crystal display screen. The comprehensive thinning treatment process comprises the following steps of 1, sealing compound protection, 2, liquid crystal display screen pretreatment, 3, defect treatment and polishing, 4, etching liquid preparation, 5, etching pretreatment, 6, etching treatment and 7, etching aftertreatment. According to the invention, defects on the surface of the liquid crystal display screen can be slightly amplified through pretreatment before etching, defects on the surface of the liquid crystaldisplay screen are polished and ground through defect polishing treatment, so that the surface is flat and bright, through the chemical characteristics of hydrochloric acid, crystals generated after the reaction of hydrofluoric acid and glass have a temporary adhesion chemical phenomenon, through cooperative use of nitric acid and hydrochloric acid, the thickness of the liquid crystal display screen can be accurately controlled according to requirements, bubbles generated by the anti-corrosion air pipe arranged at the bottom of the etching tank pool can impact and fall off temporarily attachedcrystals, and the phenomenon of uneven etching is avoided.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display production, in particular to a comprehensive thinning process of liquid crystal display. Background technique [0002] With the development of science, the competition in the liquid crystal display industry is becoming more and more fierce. The focus of the competition lies in the high resolution, ultra-thin and high-brightness design of the liquid crystal display, low power consumption, and ultra-thin display technology has become the market There are usually two thinning methods for liquid crystal displays, one is physical polishing and grinding, and the other is chemical etching thinning. Among them, the chemical etching thinning method is characterized by its unique advantages and are more widely used; [0003] There will be some defects on the surface of the liquid crystal display during production, and under the uniform thinning method of chemical etching, some defect points ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00
CPCC03C15/00
Inventor 肖亮灿
Owner 滁州东盛电子科技有限公司
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