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. 08, 2025
Filed:
Nov. 23, 2021
Fuji Electric Co., Ltd., Kawasaki, JP;
Keiji Okumura, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
A semiconductor device has an active area in which a main current flows and an outer-edge area surrounding the active area. The semiconductor device includes: an n-type semiconductor layer made of a wide bandgap semiconductor; a plurality of p-type guard rings provided inside the semiconductor layer in the outer-edge area to surround the active area; and a separation region provided in a concentric ring shape in the outer-edge area to be in contact with both of the adjacent guard rings, wherein the separation region contains both n-type first impurities and p-type second impurities.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile