Agc Inc.

Noriko Tanabe

Daisuke Kobayashi

Yuichi Suzuki

Yusuke Fujiwara

Izuru Kashima

Kiyoshi Tamai

Yoichi Sera

Taku Yamada

A chemically strengthened glass having a compressive stress layer formed in a surface layer thereof according to an ion exchange method, in which a surface of the glass has polishing flaws, the glass has a texture direction index (Stdi) of 0.30 or more, a hydrogen concentration Y in a region to a depth X from an outermost surface of the glass satisfies the following relational equation (I) at X=from 0.1 to 0.4 (&#x3bc;m), and a surface strength F (N) measured by a ball-on-ring test is (F&#x2265;1400&#xd7;t) relative to a sheet thickness t (mm) of the glass:&#x2003;&#x2003;(I)in which meanings of respective symbols in the equation (I) are as follows: Y: hydrogen concentration (as HO, mol/L), X: depth from the outermost surface of the glass (&#x3bc;m), a: &#x2212;0.300 or more, and b: 0.220 or less.

Chemically strengthened glass and method for producing same

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Tokyo, Japan

Noriko Tanabe