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:
Aug. 30, 2022
Filed:
Mar. 02, 2020
Fuji Electric Co., Ltd., Kawasaki, JP;
Toshiaki Sakata, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
A semiconductor device has an active region through which current flows and a termination structure region. On a front surface of a semiconductor substrate of a first conductivity type, a first semiconductor layer of the first conductivity type is provided. On a surface of the first semiconductor layer in the active region, a first parallel pn structure is provided including first columns of the first conductivity type and second columns of a second conductivity type disposed repeatedly alternating one another in a plane parallel to the front surface. In the termination structure region, a second parallel pn structure is provided including third columns of the first conductivity type and fourth columns of the second conductivity type disposed repeatedly alternating one another. On a surface of the second parallel pn structure, a first semiconductor region of the second conductivity type is provided including plural regions apart from one another.