High-strength glass, touch panel, and method for manufacturing high-strength glass

Abstract

The present invention provides a high-strength glass in which damage such as cracking due to microcracking or the like can be prevented, the time required for treatment for maintaining strength can be shortened, production efficiency can be improved, and the end surfaces can be formed to a desired shape. A reinforcement layer (2) is formed on both surfaces of a glass plate (1), and a protective film (3) is formed on regions excluding cut sections (4). Next, recesses (7) obtained by corrosion through an etching treatment are formed on the cut sections (4) of the glass plate (1) not covered by the protective film (3). Then, a hole is formed using a cutting machine (8b) at the opening sections (4b), and peripheral edge sections (4a) are cut using a cutting machine (8a) to obtain diced high-strength glass (10). A stepped section (11) having a convex cross section and comprising an inner side surface (12) obtained by corrosion through an etching treatment and an outer side surface (13) cut by mechanical machining is formed at the peripheral edge end surface (1a) and opening end surface (1b) of the glass plate (1). Since the end surface of the stepped section (11) is mechanically machined, the end surface can be machined to a desired shape.

Description

technical field [0001] The present invention relates to high-strength glass capable of preventing breakage such as cracks caused by microcracks and / or chips generated when cutting a glass plate, and ensuring strength against stress in tempered glass, glass plate, or laminated glass, and its use The touch panel of the high-strength glass, and the manufacturing method of the high-strength glass. Background technique [0002] In recent years, for example, electronic devices such as smartphones, tablet-type terminals, and car navigation devices have been marketed in a large number of products equipped with touch panels. Generally, a touch panel is formed by laminating a cover glass and an electrostatic sensor. As a feature of the cover glass, it is required to be as thin as possible and have high strength against stress. [0003] Reinforced glass is generally known as such high-strength glass. Tempered glass refers to glass that has compressive stress layers (reinforced layers...

AI Technical Summary

Problems solved by technology

However, according to this method, after cutting the large glass substrate, the end of the substrate is ground to remove the protrusion remaining on the end of the substrate, and then the end surface of the substrate is etched. Therefore, the processing time is still long and the production efficiency is poor

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