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Asymmetric thinning processing method for TFT-LCD (Thin Film Transistor Liquid Crystal Display) glass substrate

A processing method and asymmetric technology, which are applied in the field of asymmetric thinning processing of TFT-LCD glass substrates, and can solve the problems of decreased strength and insufficient pressure resistance of panels.

Pending Publication Date: 2020-02-07
天津美泰真空技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention aims to propose an asymmetric thinning processing method for TFT-LCD substrate glass to solve the problem that the color filter substrate is relatively thin, and at the same time thinning will reduce its strength and the panel’s compression resistance is insufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of TFT-LCD substrate glass asymmetric thinning processing method, this method comprises the following steps:

[0030] (1) Use acetone and ethanol to clean the appearance of the TFT-LCD substrate glass behind the box; wherein, the thickness of the array substrate is 0.5mm, and the thickness of the color filter substrate is 0.45mm;

[0031] (2) Immerse the cleaned TFT-LCD substrate glass vertically and constant temperature in the thinning etching solution at 49°C, and perform thinning treatment on the glass; the thinning time is 2.3h; the hydrogen ion concentration of the thinning etching solution is 2.9 mol / L.

[0032] (3) Take out the thinned TFT-LCD substrate glass and rinse it with clear water;

[0033] (4) Grinding and polishing the rinsed TFT-LCD substrate glass on both sides, then rinsing and drying with clean water; finally obtaining an array substrate and a color filter substrate with a thickness of 0.28mm.

[0034] Wherein, the thinning etching solution...

Embodiment 2

[0036] A kind of TFT-LCD substrate glass asymmetric thinning processing method, this method comprises the following steps:

[0037] (1) Use acetone and ethanol to clean the appearance of the TFT-LCD substrate glass behind the box; wherein, the thickness of the array substrate is 0.6mm, and the thickness of the color filter substrate is 0.49mm;

[0038] (2) Immerse the cleaned TFT-LCD substrate glass vertically and constant temperature in the thinning etching solution at 50°C, and carry out thinning treatment on the glass; the thinning time is 3.1h; the hydrogen ion concentration of the thinning etching solution is 3.1 mol / L.

[0039] (3) Take out the thinned TFT-LCD substrate glass and rinse it with clear water;

[0040] (4) Grinding and polishing the rinsed TFT-LCD substrate glass on both sides, then rinsing and drying with clean water; finally obtaining an array substrate and a color filter substrate with a thickness of 0.31 mm.

[0041] Wherein, the thinning etching solut...

Embodiment 3

[0043] A kind of TFT-LCD substrate glass asymmetric thinning processing method, this method comprises the following steps:

[0044] (1) Use acetone and ethanol to clean the appearance of the TFT-LCD substrate glass behind the box; wherein, the thickness of the array substrate is 0.65mm, and the thickness of the color filter substrate is 0.5mm;

[0045] (2) Immerse the cleaned TFT-LCD substrate glass vertically and constant temperature in the thinning etching solution at 51°C, and carry out thinning treatment on the glass; the thinning time is 2.7h; the hydrogen ion concentration of the thinning etching solution is 3.5 mol / L.

[0046] (3) Take out the thinned TFT-LCD substrate glass and rinse it with clear water;

[0047] (4) Perform double-sided grinding and polishing on the washed TFT-LCD substrate glass, and then rinse and dry with clean water; finally obtain an array substrate and a color filter substrate with a thickness of 0.35 mm.

[0048] Wherein, the thinning etching s...

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Abstract

The invention provides an asymmetric thinning processing method for TFT-LCD (Thin Film Transistor Liquid Crystal Display) substrate glass. The method comprises the following steps of: (1) cleaning theouter surface of the TFT-LCD substrate glass subjected to box alignment by using acetone and ethanol; (2) vertically immersing the cleaned TFT-LCD substrate glass in a thinning etching solution withthe temperature of 45-55 DEG C at a constant temperature, and carrying out thinning treatment on the glass; (3) taking out the thinned TFT-LCD substrate glass, and washing the thinned TFT-LCD substrate glass with clear water; and (4) carrying out double-sided grinding and polishing on the washed TFT-LCD substrate glass, then washing with clear water and drying. According to the asymmetric thinningprocessing method, the problems that a color film substrate is relatively thin, meanwhile, the strength of the color film substrate is reduced due to thinning, and the compressive capacity of the panel is insufficient are solved.

Description

technical field [0001] The invention relates to the technical field of glass thinning, in particular to an asymmetric thinning processing method of a TFT-LCD glass substrate. Background technique [0002] With the rapid development of information technology in our country, old electronic tube TVs have been replaced by new LCD TVs, and LCD TVs that are clear and not harmful to eyes have become people's new favorites. Even LCD screens are not only used in TV sets, but are also widely used in various electronic components. [0003] In order to meet people's visual experience of high-definition picture quality and the requirement for the liquid crystal display screen to be movable at will. Liquid crystal display manufacturers continue to research and develop the thinning process of the display from various aspects to ensure the clarity, lightness and intelligence of the liquid crystal display. [0004] Thin film transistor liquid crystal display (English: Thin film transistor ...

Claims

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Application Information

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IPC IPC(8): C03C15/00C09K13/08
CPCC03C15/00C09K13/08
Inventor 夏伟张兵郑建军张成金姚仕军方添志赵帅
Owner 天津美泰真空技术有限公司