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:
Sep. 18, 2012
Filed:
Nov. 05, 2009
Applicants:
Kohei Miyagawa, Osaka, JP;
Yasushi Kobayashi, Osaka, JP;
Daigo Yamashina, Osaka, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a semiconductor substrate of a first conductivity type, first to third drain offset regions of a second conductivity type are formed in that order in a bottom up manner. A body region of the first conductivity type is formed partly in the second drain offset region and partly in the third drain offset region. The second drain offset region has a lower impurity concentration than the first and third drain offset regions. A curvature portion of the body region is located in the second drain offset region.