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. 29, 2015
Filed:
Jul. 25, 2012
Applicants:
Philipp Menz, Wartenberg, DE;
Berthold Staufer, Moosburg, DE;
Yasuda Hiroshi, Plano, TX (US);
Inventors:
Assignee:
TEXAS INSTRUMENTS DEUTSCHLAND GMBH, Freising, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/082 (2006.01); H01L 29/00 (2006.01); H01L 27/102 (2006.01); H01L 29/73 (2006.01); H01L 29/732 (2006.01); H01L 29/10 (2006.01); H01L 29/66 (2006.01);
U.S. Cl.
CPC ...
H01L 29/73 (2013.01); H01L 29/1004 (2013.01); H01L 29/66234 (2013.01); H01L 29/7325 (2013.01);
Abstract
The invention relates to an electronic device with a bipolar transistor having an emitter, a base and a collector. The base has a first region of a first concentration of the first dopant for forming an electrically active region of the base and a second region of a second concentration of the first dopant close to the surface of the base region. The first region is separated from the second region by a region of a third concentration of the first dopant and the third concentration is lower than the first and the second concentration.