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:
May. 22, 2018
Filed:
Jun. 30, 2015
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Hiromu Shiomi, Tsukuba, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
In a first main surface of a silicon carbide substrate, a second trench having a second side surface which connects to the first main surface and is in contact with a third impurity region and a second impurity region and a second bottom portion continuous to the second side surface is formed. A fourth impurity region has a first region arranged between a second main surface and the second impurity region and a second region connecting the second bottom portion of the second trench and the first region to each other. A first electrode is electrically connected to the third impurity region on a side of the first main surface and is in contact with the second region at the second bottom portion of the second trench.