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:
Oct. 19, 2021
Filed:
Aug. 31, 2017
Shindengen Electric Manufacturing Co., Ltd., Tokyo, JP;
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD., Tokyo, JP;
Abstract
A semiconductor device includes an n-type base substrate; a p-type first region; a p-type surface region having a plurality of second corner portions and a plurality of second side portions surrounding the first region. The p-type surface region has a dopant concentration lower than a dopant concentration of the first region. The semiconductor device further includes a field plate in a region overlapping with the surface region in a plan view by way of an insulation film. The field plate has a plurality of field plate corner portions and a plurality of field plate side portions. A relationship of L>Lis established at least at a portion of the surface region or a relationship of FP>FPis established at least at a portion of the field plate is satisfied. A withstand voltage of the second side portion is lower than a withstand voltage of the second corner portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile