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:
Sep. 12, 2023
Filed:
Sep. 21, 2021
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Assignee:
AGC INC., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/087 (2006.01); B32B 17/06 (2006.01); B32B 7/06 (2019.01); H01L 21/683 (2006.01); H01L 21/78 (2006.01); C03C 3/091 (2006.01);
U.S. Cl.
CPC ...
C03C 3/087 (2013.01); B32B 7/06 (2013.01); B32B 17/06 (2013.01); H01L 21/6835 (2013.01); H01L 21/7813 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2457/14 (2013.01); C03C 3/091 (2013.01); H01L 2221/68318 (2013.01);
Abstract
A glass substrate contains, as a glass matrix composition as represented by mole percentage based on oxides, SiO: 58-75%, AlO: 4.5-16%, BO: 0-6%, MgO: 0-6%, CaO: 0-6%, SrO: 5-20%, BaO: 5-20%, and MgO+CaO+SrO+BaO:15-40%. The glass substrate has an alkali metal oxide content of 0-0.1% as represented by mole percentage based on oxides. The glass substrate has an average coefficient of thermal expansion α of 56-90 (×10/° C.) at 50° C.-350° C.