公开(公告)号：US20230365463A1

公开(公告)日：2023-11-16

申请号：US18315592

申请日：2023-05-11

Applicant: AGC Inc.

Inventor： Kaname SEKIYA ,  Yusuke FUJIWARA ,  Akio SHIZUKAI ,  Seikichi TEI ,  Takashi ETO

IPC: C03C21/00 ,  B24B7/24

CPC classification number: C03C21/002 ,  B24B7/241

Abstract: The present invention relates to a method for producing a chemically strengthened glass substrate, the method including the following steps (A) to (C): (A) preparing a chemically strengthened glass substrate A having a main surface and an end surface; (B) obtaining a glass substrate by polishing a surface of the chemically strengthened glass substrate A; and (C) performing ion exchange by bringing the glass substrate into contact with an inorganic salt composition including 90% by mass or more of KNO3 and 1.0% by mass or more and 6.0% by mass or less of NaNO3 to obtain a chemically strengthened glass substrate C.