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:
Apr. 23, 2024
Filed:
Jul. 13, 2022
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Yuki Nakano, Kyoto, JP;
Ryota Nakamura, Kyoto, JP;
Assignee:
ROHM CO, LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/423 (2006.01); H01L 29/06 (2006.01); H01L 29/10 (2006.01); H01L 29/16 (2006.01); H01L 29/20 (2006.01); H01L 29/36 (2006.01); H01L 29/40 (2006.01); H01L 29/417 (2006.01); H01L 29/49 (2006.01); H01L 29/51 (2006.01); H01L 29/78 (2006.01);
U.S. Cl.
CPC ...
H01L 29/4236 (2013.01); H01L 29/0649 (2013.01); H01L 29/0657 (2013.01); H01L 29/0661 (2013.01); H01L 29/0688 (2013.01); H01L 29/0692 (2013.01); H01L 29/0696 (2013.01); H01L 29/1095 (2013.01); H01L 29/1602 (2013.01); H01L 29/1608 (2013.01); H01L 29/2003 (2013.01); H01L 29/36 (2013.01); H01L 29/41766 (2013.01); H01L 29/42376 (2013.01); H01L 29/4238 (2013.01); H01L 29/4916 (2013.01); H01L 29/4925 (2013.01); H01L 29/4958 (2013.01); H01L 29/518 (2013.01); H01L 29/7809 (2013.01); H01L 29/7811 (2013.01); H01L 29/7813 (2013.01); H01L 29/0619 (2013.01); H01L 29/402 (2013.01); H01L 29/407 (2013.01); H01L 29/42372 (2013.01);
Abstract
A semiconductor device of the present invention includes a semiconductor layer of a first conductivity type having a cell portion and an outer peripheral portion disposed around the cell portion, and a surface insulating film disposed in a manner extending across the cell portion and the outer peripheral portion, and in the cell portion, formed to be thinner than a part in the outer peripheral portion.