The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
May. 26, 2023
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Kazuki Kanehara, Tokyo, JP;
Yutaka Kuroiwa, Tokyo, JP;
Assignee:
AGC INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03C 3/083 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 3/095 (2006.01); C03C 3/097 (2006.01); C03C 10/00 (2006.01); C03C 21/00 (2006.01); H05K 5/02 (2006.01);
U.S. Cl.
CPC ...
C03C 10/0027 (2013.01); C03C 3/083 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/095 (2013.01); C03C 3/097 (2013.01); C03C 10/0054 (2013.01); C03C 21/002 (2013.01); C03C 2204/00 (2013.01); H05K 5/02 (2013.01);
Abstract
The present invention relates to a chemically strengthened glass having a thickness of t (unit: μm) and a relative permittivity of 7.0 or less at 20° C. and a frequency of 10 GHz, in which a value of Z determined by the following formula is 0.65 or more, where S1 is an entropy function calculated from an amount of alkali ions in a center portion of the glass, S2 is an entropy function calculated from an average amount of alkali ions from a glass surface to a depth of 0.05t, and X (unit: MPa) is an average value of a compressive stress in a region from the glass surface to the depth of 0.05t: Z=(S2−S1)×10+X/1000.