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. 30, 2025
Filed:
Dec. 08, 2022
Sanken Electric Co., Ltd., Niiza, JP;
Masayuki Hanaoka, Niiza, JP;
SANKEN ELECTRIC CO., LTD., Niiza, JP;
Abstract
A semiconductor device according to one or more embodiment may include: an IGBT region including a first semiconductor region of a first conductivity type; a second semiconductor region of a second conductivity type arranged on the first semiconductor region; a third semiconductor region of the first conductivity type arranged on the second semiconductor region; a fourth semiconductor region of the second conductivity type arranged on the first semiconductor region and opposite the second semiconductor region; and a control electrode that is arranged via an insulating film opposite the second semiconductor region; and a diode region comprising a fifth semiconductor region of the second conductivity type on the first semiconductor region. In the semiconductor device according to one or more embodiments, an impurity concentration of the fifth semiconductor region may be lower than the impurity concentration of the second semiconductor region.