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.

Date of Patent:
Dec. 29, 2020

Filed:

May. 21, 2020
Applicant:

Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);

Inventors:

Shailesh N. Joshi, Ann Arbor, MI (US);

Naoya Take, Canton, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/00 (2006.01); H01L 23/22 (2006.01); H01L 23/427 (2006.01); H01L 23/34 (2006.01);
U.S. Cl.
CPC ...
H01L 24/33 (2013.01); H01L 23/22 (2013.01); H01L 23/4275 (2013.01); H01L 24/29 (2013.01); H01L 24/32 (2013.01); H01L 24/83 (2013.01); H01L 23/34 (2013.01); H01L 2224/29083 (2013.01); H01L 2224/29084 (2013.01); H01L 2224/29109 (2013.01); H01L 2224/29111 (2013.01); H01L 2224/29169 (2013.01); H01L 2224/32245 (2013.01); H01L 2224/32503 (2013.01); H01L 2224/3303 (2013.01); H01L 2224/8381 (2013.01); H01L 2224/8382 (2013.01); H01L 2224/8383 (2013.01); H01L 2924/3512 (2013.01);
Abstract

Encapsulated stress mitigation layers and assemblies having the same are disclosed. An assembly that includes a first substrate, a second substrate, an encapsulating layer disposed between the first and second substrates, and a stress mitigation layer disposed in the encapsulating layer such that the stress mitigation layer is encapsulated within the encapsulating layer. The stress mitigation layer has a lower melting temperature relative to a higher melting temperature of the encapsulating layer. The assembly includes an intermetallic compound layer disposed between the first substrate and the encapsulating layer such that the encapsulating layer is separated from the first substrate by the intermetallic compound layer. The stress mitigation layer melts into a liquid when the assembly operates at a temperature above the low melting temperature of the stress mitigation layer and the encapsulating layer maintains the liquid of the stress mitigation layer within the assembly.


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