Invention Grant
- Patent Title: Chemically strengthened glass with a film and method for measuring surface stress of chemically strengthened glass
-
Application No.: US17469139Application Date: 2021-09-08
-
Publication No.: US12006252B2Publication Date: 2024-06-11
- Inventor: Seiki Ohara , Shunji Wachi , Hironobu Sato
- Applicant: AGC Inc.
- Applicant Address: JP Tokyo
- Assignee: AGC Inc.
- Current Assignee: AGC Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 20151342 2020.09.09
- Main IPC: C03C21/00
- IPC: C03C21/00 ; C03C17/28 ; C03C17/30 ; C03C17/32 ; G01L1/24

Abstract:
The present invention relates to a chemically strengthened glass with a film, including: a chemically strengthened glass having a pair of main surfaces opposing each other; and a film formed on at least one of the main surfaces of the chemically strengthened glass, in which the chemically strengthened glass has two or less interference fringes observed under stress measurement utilizing surface propagation light having a wavelength of 365 nm, and the film has a refractive index lower than a refractive index of the chemically strengthened glass.
Public/Granted literature
Information query