公开(公告)号：US10308549B2

公开(公告)日：2019-06-04

申请号：US15000719

申请日：2016-01-19

Applicant: AGC Inc.

Inventor： Izuru Kashima ,  Yusuke Fujiwara ,  Kiyoshi Tamai ,  Yuichi Suzuki ,  Daisuke Kobayashi ,  Yoichi Sera ,  Taku Yamada ,  Noriko Tanabe

IPC: C03C21/00 ,  C03C15/02 ,  C03C23/00 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  G01B5/28 ,  C03C15/00

Abstract: 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 (μm), and a surface strength F (N) measured by a ball-on-ring test is (F≥1400×t2) relative to a sheet thickness t (mm) of the glass: Y=aX+b  (I) in which meanings of respective symbols in the equation (I) are as follows: Y: hydrogen concentration (as H2O, mol/L), X: depth from the outermost surface of the glass (μm), a: −0.300 or more, and b: 0.220 or less.