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:
Nov. 15, 2016
Filed:
Feb. 04, 2016
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Kenichi Matsushita, Nonoichi Ishikawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor device comprises a first semiconductor region of a first conductivity type, a second semiconductor region of a second conductivity type, a third semiconductor region of the second conductivity type, a fourth semiconductor region of the second conductivity type, and an insulating unit. The fourth semiconductor region is separated from the third semiconductor region. A carrier concentration of the second conductivity type of the fourth semiconductor region is higher than a carrier concentration of the second conductivity type of the second semiconductor region. The fourth semiconductor region protrudes below more than the third semiconductor region. The insulating unit is provided on a portion of the second semiconductor region positioned between the third semiconductor region and the fourth semiconductor region and on the fourth semiconductor region.