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:
Nov. 06, 2012
Filed:
Mar. 24, 2011
Teruhisa Ikuta, Nara, JP;
Yoshinobu Sato, Osaka, JP;
Teruhisa Ikuta, Nara, JP;
Yoshinobu Sato, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a semiconductor device of the present invention, a first base regionis extended to a part under a gate electrodewhile having a vertical concentration profile of an impurity that increases from the surface of a semiconductor layerand becomes maximum under an emitter region, and the length in the lateral direction from a point where the impurity concentration becomes maximum located under an end of the gate electrodeto the boundary with a second base regionis not smaller than the length in the vertical direction from the point where the impurity concentration becomes maximum to the boundary with the second base region
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