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Polishing liquid for glass, and polishing method

A grinding method and technology of grinding liquid, which is applied in the field of grinding liquid and can solve problems such as product quality problems

Inactive Publication Date: 2018-07-17
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dent on the display device is sometimes noticeable depending on the image, and sometimes becomes a problem in product quality

Method used

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  • Polishing liquid for glass, and polishing method
  • Polishing liquid for glass, and polishing method
  • Polishing liquid for glass, and polishing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061]

[0062] The surface of the glass is rough (gentle undulation 20) (see figure 1 ) can be identified with the naked eye using a microscope, but it is extremely difficult to judge using photographs. For example, figure 2 of (b), image 3 (a) is also difficult to distinguish when it is taken as a photo. This is because it is difficult to provide a contrast between the rough surface (gentle undulation 20 ) and the background.

[0063] Therefore, in order to quantify the surface roughness (gentle undulation 20), the amount of polishing with respect to a polishing liquid having a constant concentration was measured. Surface roughness (gentle undulations 20) such as image 3 As shown, it protrudes (protrudes) from the glass surface. Therefore, glass having surface roughness (gentle undulations 20 ) is observed thickly to the extent of a portion where the thickness protrudes.

[0064] The basis of the polishing liquid is a 3% by mass aqueous solution of HF containing ...

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PUM

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Abstract

The polishing liquid is characterized by containing hydrofluoric acid, an alkali metal, water, and a surfactant, wherein the surfactant is of a sulfonic acid type or a sulfuric acid ester type. The polishing liquid enables inhibition of excessive crystal growth of deposits generated in minute flaws during preliminary polishing, thereby enabling inhibition of surface roughness from occurring afterpolishing.

Description

technical field [0001] The present invention relates to a polishing liquid for polishing glass of liquid crystal screens and organic EL screens used in mobile terminals, FPDs (flat panel displays), and the like. Background technique [0002] Liquid crystal display devices and organic EL display devices are often used in products such as mobile phones, smartphones, tablet PCs, and personal computers. Moreover, in these flat panel display devices, glass is mainly used as a substrate. Hereinafter, these display devices will be referred to as "glass display devices". [0003] In glass-made display devices, drive units such as liquid crystals, TFTs, and light-emitting layers are formed between two plate glasses serving as base materials. When forming the driving portion, strength is required so that the glass does not break when handled. Therefore, as a material of glass, alkali-free glass such as aluminoborosilicate glass (aluminoborosilicate glass) mixed with boric acid and ...

Claims

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Application Information

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IPC IPC(8): C03C15/00
CPCC03C15/00C09G1/00C09K13/08C09G1/04
Inventor 西川晴香家田智之永井忠岛田和哉
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD