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:
Feb. 27, 2018
Filed:
Jul. 26, 2016
Fuji Electric Co., Ltd., Kanagawa, JP;
Takahiro Mitsumoto, Matsumoto, JP;
Akira Iso, Kai, JP;
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Abstract
A semiconductor device is provided comprising a semiconductor element, a case portion housing the semiconductor element and having an opening end on at least some of wall portion, a lid portion covering the opening end of the case portion, and a sealing material sealing the semiconductor element inside the case portion, where a projection portion or a dent portion is provided on a surface of the wall portion close to the sealing material between the opening end and the sealing material. The Purpose is to prevent an oil leakage from a semiconductor device. Also, instead of the projection portion or the dent portion, a semiconductor device is provided with a liquid receiving portion that receives a liquid dripping from the opening end on a surface facing away from the sealing material.