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:
Jun. 01, 2021
Filed:
Dec. 26, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
A semiconductor device includes a silicon carbide semiconductor layer, a termination region disposed in the silicon carbide semiconductor layer, an insulating film covering part of the termination region, an electrode disposed on the silicon carbide semiconductor layer, a seal ring disposed on remaining part of the termination region and surrounding the electrode, and a passivation film covering the insulating film and the seal ring. Assuming that an outer peripheral end of the seal ring and an outer peripheral end of the passivation film have distance L2 at a side of the silicon carbide semiconductor layer, the outer peripheral end of the seal ring and the outer peripheral end of the passivation film have distance L1 at a corner, and the outer peripheral end of the passivation film at the corner has radius of curvature R1, L1>L2 and R1≥L2 are satisfied.