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:
Apr. 21, 2015
Filed:
Nov. 29, 2012
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Yu Harubeppu, Hitachinaka, JP;
Takayuki Kushima, Hitachi, JP;
Yasuhiro Nemoto, Hitachi, JP;
Keisuke Horiuchi, Mito, JP;
Hisashi Tanie, Mito, JP;
Hitachi Power Semiconductor Device, Ltd., Hitachi-shi, JP;
Abstract
The purpose of the present invention is to provide a power semiconductor device which has a light weight, high heat dissipation efficiency, and high rigidity. The power semiconductor device including a base, semiconductor circuitswhich are arranged on the base, and a cooling finwhich cools each of the semiconductor circuits, in which one or more protruding portionsare formed on the base, widths of the protruding portionsin a direction parallel to the basesurface being longer than a thickness of the base, thereby providing power semiconductor deviceswhich have a light weight, high heat dissipation efficiency, and high rigidity.