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:
Feb. 17, 2015
Filed:
Dec. 12, 2012
Fuji Electric Co., Ltd., Kawasaki, JP;
Dawei Cao, Matsumoto, JP;
Yasuhiko Onishi, Matsumoto, JP;
Fuji Electric Co., Ltd., , JP;
Abstract
A semiconductor device is disclosed that has enhanced its electric charge resistance. A first parallel p-n layer is disposed in an element activating part, and a second parallel p-n layer is disposed in an element peripheral edge part. An nsurface area is disposed between the second parallel p-n layer and a first principal face. Two or more p-type guard ring areas are disposed so as to be separate from each other on the first principal face side of the nsurface area. First field plate electrodes and second field plate electrodes are electrically connected to p-type guard ring areas. Second field plate electrodes cover the first field plate electrodes adjacent to each other so as to cover the first principal face between the first field plate electrodes through a second insulating film.