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:
May. 30, 2017
Filed:
Nov. 16, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hiroshi Hosokawa, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A semiconductor substrate is provided with a first cell region, the first cell region including: an n-type emitter region; a p-type first top body region; an n-type first barrier region; an n-type first pillar region; and a p-type first bottom body region, the semiconductor substrate may further comprise: an n-type drift region; a p-type collector region; an n-type cathode region, the n-type first barrier region may include a first peak position where a peak of the n-type impurity density is present within a part linked to the n-type first pillar region, and a second peak position where a peak of the n-type impurity density is present within a part in contact with the gate insulating layer, and a depth of the first peak position from a front surface of the semiconductor substrate is different from a depth of the second peak position from the front surface of the semiconductor substrate.