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. 30, 2025
Filed:
Dec. 27, 2022
Applicants:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Materials Co., Ltd., Yokohama, JP;
Inventors:
Assignees:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/15 (2006.01); C04B 37/02 (2006.01); H01L 23/373 (2006.01); H05K 1/03 (2006.01);
U.S. Cl.
CPC ...
H01L 23/3735 (2013.01); C04B 37/025 (2013.01); H01L 23/15 (2013.01); H05K 1/0306 (2013.01); C04B 2237/366 (2013.01); C04B 2237/368 (2013.01); C04B 2237/407 (2013.01);
Abstract
A bonded body according to an embodiment comprises a ceramic substrate, a copper plate, and a bonding layer provided on at least one surface of the ceramic substrate and bonding the ceramic substrate and the copper plate, in which the bonding layer contains Cu, Ti, and a first element being one or two selected from Sn and In, and the bonding layer includes a Ti-rich region in which a ratio (M/M) of a mass Mof Ti to a mass Mof the first element being 0.5 or more and a Ti-poor region in which the ratio (M/M) being 0.1 or less.