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. 24, 2011
Filed:
Jul. 03, 2008
Applicants:
Seiji Otake, Kumagaya, JP;
Yasuhiro Takeda, Ogaki, JP;
Kenichi Maki, Ibaraki, JP;
Inventors:
Assignees:
Sanyo Electric Co., Ltd., Osaka, JP;
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes a gate electrode formed through an insulating film in a groove having a first side surface adjacent to a source region and a base region, and a second conductive type first impurity region formed adjacent to a second side surface of the groove between the groove and a lead-out portion of a drain region existing below the base region so as to extend downward beyond a lower end of the groove.