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. 13, 2021
Filed:
Aug. 30, 2019
Denso Corporation, Kariya, JP;
Atsushi Watanabe, Toyota, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A switching device may include: a n-type source layer; a p-type body layer in contact with the source layer; a n-type drift layer in contact with the body layer; a gate insulating film covering a range extending across a surface of the source layer, a surface of the body layer, and a surface of the drift layer; and a gate electrode opposed to the source layer, the body layer, and the drift layer via the gate insulating film, wherein the gate electrode includes a first electric conductor and a second electric conductor having a work function smaller than a work function of the first electric conductor, the first electric conductor is in contact with a part of the gate insulating film covering the body layer, and the second electric conductor is in contact with a part of the gate insulating film covering the drift layer.