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. 22, 2015
Filed:
Mar. 07, 2014
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Yoichi Hori, Hyogo-ken, JP;
Takao Noda, Hyogo-ken, JP;
Kohei Morizuka, Hyogo-ken, JP;
Ryoichi Ohara, Hyogo-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor device includes a first semiconductor region, a first electrode, a second semiconductor region, a third semiconductor region, a fourth semiconductor region, a fifth semiconductor region, and a second electrode. The first electrode forms a Schottky junction with the first region. The second region is provided between the first region and the first electrode. The third region is provided between the first region and the first electrode and forms an ohmic junction with the first electrode. The fourth region is provided between the first region and the third region. The fourth region has a higher impurity concentration than the first region. The fifth region is provided between the third region and the first electrode. The fifth region has a higher impurity concentration than the third region. The second electrode is provided on opposite side of the first region from the first electrode.