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Method for reducing warping of glass substrate caused by chemically toughening treatment, and method for producing chemically toughened glass substrate

A glass substrate, strengthening treatment technology, applied in the direction of gaseous chemical plating, coating, metal material coating process, etc., can solve problems such as damage to the flatness of float glass, achieve excellent productivity and cost, cost reduction, manufacturing cheap effect

Inactive Publication Date: 2014-08-27
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Float glass has been reported to be warped after chemical strengthening to impair flatness (Patent Document 1)

Method used

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  • Method for reducing warping of glass substrate caused by chemically toughening treatment, and method for producing chemically toughened glass substrate
  • Method for reducing warping of glass substrate caused by chemically toughening treatment, and method for producing chemically toughened glass substrate
  • Method for reducing warping of glass substrate caused by chemically toughening treatment, and method for producing chemically toughened glass substrate

Examples

Experimental program
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Effect test

Embodiment

[0097] Hereinafter, examples of the present invention will be specifically described, but the present invention is not limited to these examples.

[0098] (1) Manufacture of float glass

[0099] A glass material having the following composition was made into a plate with a thickness of 0.8 mm by the float method, and cut into 50×50 mm to produce a float plate glass.

[0100] (Glass material A) Contains 64.3% SiO in mol% 2 , 8.0% Al 2 o 3 , 12.5% ​​Na 2 O, 4.0% K 2 O, 10.5% MgO, 0.1% CaO, 0.1% SrO, 0.1% BaO and 0.5% ZrO 2 the glass

[0101] (2) Production of glass substrates for chemical strengthening

[0102] Using the injector 10 used in the atmospheric pressure CVD method, according to figure 1 In the schematic diagram shown, the surface of the float flat glass produced in (1) is supplied with monosilane (SiH 4 ), oxygen (O 2 ) gas, so that monosilane and oxygen react on the surface of the glass substrate to form SiO 2 film on the glass substrate.

[0103] That i...

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Abstract

A method includes: forming at least one layer of a film formed of an inorganic material, that contains H atoms in a concentration of 1.0×1015 to 1.0×1019 atom / mm3, on at least a top surface of a glass substrate having a bottom surface to contact a molten metal during forming and the top surface facing the bottom surface, thereby reducing a warpage of the glass substrate caused by a chemical strengthening process performed after forming the at least one layer on the top surface of the glass substrate. The glass substrate is formed by a float process.

Description

technical field [0001] The present invention relates to a method of reducing warpage of a glass substrate caused by chemical strengthening treatment, and a method of manufacturing a chemically strengthened glass substrate. Background technique [0002] In recent years, for flat-panel display devices such as mobile phones, PDAs, and touch panels, a thin plate-shaped cover glass has been placed on the display in a wider area than the image display part in order to protect the display and improve the appearance. front. [0003] Such flat panel display devices are required to be lighter and thinner, and therefore, cover glasses used for display protection applications are also required to be thinner. [0004] However, if the thickness of the cover glass is reduced, the strength is reduced, and the cover glass itself may be broken when dropped during use or carrying, and there is a problem that the original function of protecting the display device cannot be exhibited. [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/245C03C21/00
CPCC03C21/002C03C2218/1525C03C17/245C03C21/00C03C2217/213C03C3/087C03C17/002C03C2217/211C03C2217/212C03C2217/215C23C16/401
Inventor 冈畑直树中川浩司
Owner AGC INC
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