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:
Mar. 18, 2014
Filed:
Aug. 28, 2012
Tomohide Terashima, Chiyoda-ku, JP;
Tomohide Terashima, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A semiconductor device supplying a charging current to a charging-target element includes: a semiconductor layer of a first conductivity type; a first semiconductor region of a second conductivity type formed on a main surface of the semiconductor layer and having a first node coupled to a first electrode of the charging-target element and a second node coupled to a power supply potential node supplied with a power supply voltage; a second semiconductor region of the first conductivity type formed in a surface of the first semiconductor region at a distance from the semiconductor layer and having a third node coupled to the power supply potential node; and a charge carrier drift restriction portion restricting drift of charge carrier from the third node to the semiconductor layer.