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:
Jun. 10, 2003
Filed:
Jul. 30, 2001
Applicant:
Inventor:
Hirotoshi Kubo, Gunma, JP;
Assignee:
Sanyo Electric Co., Ltd., Moriguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/976 ;
U.S. Cl.
CPC ...
H01L 2/976 ;
Abstract
The present invention is intended to form the adjacent trenches by bending them to make a widened portion and a narrowed portion on the substrate of the semiconductor inside the trenches shaped in stripes and to arrange the adjacent widened portions and the narrowed portions alternately to lay the body contact region in the widened portion. By this arrangement, the stability of the potential is improved and thus leakage current is decreased. Further, the on-state resistance can be decreased and an advantage in rule is achieved while improving the channel width per unit area.