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:
Oct. 20, 2015
Filed:
Sep. 30, 2013
Infineon Technologies Ag, Neubiberg, DE;
Christian Philipp Sandow, Haar, DE;
Hans-Joachim Schulze, Taufkirchen, DE;
Johannes Georg Laven, Taufkirchen, DE;
Franz-Josef Niedernostheide, Hagen a.T.W., DE;
Frank Pfirsch, Munich, DE;
Hans-Peter Felsl, Munich, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An IGBT includes at least one first type transistor cell, including a base region, a first emitter region, a body region, and a second emitter region. The body region is arranged between the first emitter region and the base region. The base region is arranged between the body region and the second emitter region. The IGBT further includes a gate electrode adjacent the body region and dielectrically insulated from the body region by a gate dielectric, and a base electrode adjacent the base region and dielectrically insulated from the base region by a base electrode dielectric. The base region has a first base region section adjoining the base electrode dielectric and a second base region section arranged between the second emitter region and the first base region section. A doping concentration of the first base region section is higher than a doping concentration of the second base region section.