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:
Mar. 18, 2014
Filed:
Dec. 22, 2011
Applicants:
Kensuke Okonogi, Chuo-ku, JP;
Kazuhiro Nojima, Chuo-ku, JP;
Kiyonori Oyu, Chuo-ku, JP;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/76 (2006.01); H01L 29/94 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device is provided, which includes an N well having a peak concentration of 2E+17 atom/cmor more in the range of 0.2 to 1 μm depth from the surface of a P-type semiconductor substrate, and a region provided below the N well, the region containing P-type impurities with higher concentration than concentration of electrons.