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. 27, 2025
Filed:
Mar. 15, 2021
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/67 (2006.01); B32B 18/00 (2006.01); H01L 21/687 (2006.01);
U.S. Cl.
CPC ...
H01L 21/68757 (2013.01); B32B 18/00 (2013.01); H01L 21/67103 (2013.01); B32B 2307/302 (2013.01);
Abstract
A stacked structure includes a first structure formed of a composite sintered body that contains AlN and MgAlOas main phases, and a second structure formed of a ceramic sintered body and stacked on and bonded to the first structure. A difference in linear thermal expansion coefficient between the first structure and the second structure is less than or equal to 0.3 ppm/K.