Glass substrate, method for producing glass substrate and black matrix substrate

A technology for a glass substrate and a manufacturing method, applied in the field of black matrix substrates, can solve problems such as BM film peeling, and achieve the effects of good adhesion, easy peeling, and peeling prevention

Inactive Publication Date: 2017-02-22
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A black matrix film (hereinafter, also referred to as BM film) for color filters is formed on the surface of the glass substrate on which the OH-rich hydrophilic layer is formed on the surface using a resin composition containing a black pigment such as carbon black. In the process, there is a problem that the developer solution penetrates into the interface between the OH-rich hydrophilic layer and the resin-based BM film, and the BM film is easily peeled off from the OH-rich hydrophilic layer.

Method used

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  • Glass substrate, method for producing glass substrate and black matrix substrate
  • Glass substrate, method for producing glass substrate and black matrix substrate
  • Glass substrate, method for producing glass substrate and black matrix substrate

Examples

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Effect test

Embodiment 1～3、 comparative example 1

[0071] The surface of the glass substrate was polished as follows. As the glass substrate, a glass substrate for LCD (manufactured by Asahi Glass Co., Ltd., trade name: AN100) made of aluminoborosilicate glass was used. Then, the surface of the glass substrate was polished using a polishing pad using a slurry polishing agent (manufactured by Showa Denko Co., Ltd., trade name: SHOROX A10) containing cerium oxide particles with an average particle diameter of 0.8 to 1.0 μm.

[0072] Then, use figure 1 The cleaning method shown is for cleaning glass substrates whose surfaces have been ground.

Embodiment 1

[0073] In Example 1, an alkaline cleaning agent stock solution (manufactured by Parker Corporation, trade name: PK-LCG28) diluted with water to pH 8.9 was used as an aqueous cleaning solution.

[0074] In addition, in Example 2 and Example 3, the liquid which diluted the acidic cleaning agent stock solution with water so that pH may be 5.3 (Example 2) and 3.9 (Example 3), respectively, was used as an aqueous cleaning solution. In addition, the acidic cleaning agent stock solution made PK-LCG492A (trade name of the acidic cleaning agent stock solution manufactured by Parker Corporation) so that the concentration of the organic phosphonic acid in a liquid may be 1 / 4 liquid.

[0075] Furthermore, in Comparative Example 1, a solution obtained by diluting an acidic cleaning agent stock solution (manufactured by Parker Corporation, trade name: PK-LCG492A) with water to pH 2.7 was used as an aqueous cleaning solution.

[0076] Then, in Examples 1 to 3 and Comparative Example 1, the s...

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Abstract

A glass substrate which is formed of silicate glass containing aluminum and which is configured so that the value obtained by subtracting the ratio of the atomic concentration of aluminum to the atomic concentration of silicon in the surface of the glass substrate as measured by X-ray photoelectron spectroscopy from the ratio of the atomic concentration of aluminum to the atomic concentration of silicon in the inside of the glass substrate as measured by X-ray photoelectron spectroscopy is 0.25 or less.

Description

technical field [0001] The invention relates to a glass substrate, a manufacturing method of the glass substrate and a black matrix substrate. Background technique [0002] Glass substrates used in FPDs (flat panel displays) such as liquid crystal display devices (LCDs) are manufactured by, for example, forming a glass ribbon from molten glass by a float method or a fusion method, and cutting it out from the glass ribbon. On the surface of such a glass substrate, a highly hydrophilic layer (hereinafter referred to as an OH-rich hydrophilic layer) containing an excessive amount of OH groups may be formed. [0003] In particular, it is remarkable when grinding glass formed into a plate shape from molten glass with a grinding tool that rotates and revolves. By removing minute unevenness and undulations on the surface in the polishing step, it is formed into a thin plate shape with a predetermined thickness (for example, 0.1 to 1.1 mm) satisfying the flatness required for a gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C23/00C03C15/02C03C19/00G02F1/1333G02F1/1335
CPCC03C15/02C03C19/00C03C23/00G02F1/1333G02F1/1335Y02P40/57
Inventor 小林大介竹中敦义高桥秀幸前柳佳孝石川智章
Owner ASAHI GLASS CO LTD
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