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:
Aug. 19, 2025
Filed:
Aug. 23, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Kentaro Ichinoseki, Higashimurayama Tokyo, JP;
Keiko Kawamura, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
A semiconductor device includes a semiconductor part, first to third electrodes, a control electrode and first to third insulating films. The semiconductor part is provided between the first and second electrodes. The third electrode extends in a first direction inside a trench of the semiconductor part. The control electrode is provided inside the trench at an opening side thereof. The control electrode includes first and second control portions arranged in a second direction crossing the first direction. The third electrode has an end portion between the first and second control portions. The first insulating film is provided between the semiconductor part and the third electrode. The second insulating film is provided between the semiconductor part and the control electrode. The third insulating film covers the end portion of the third electrode. The first insulating film includes an extending portion extending between the third insulating film and the control electrode.