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. 18, 2012
Filed:
Dec. 24, 2009
Applicants:
Takeshi Hishida, Kanagawa, JP;
Tsutomu Igarashi, Kanagawa, JP;
Inventors:
Takeshi Hishida, Kanagawa, JP;
Tsutomu Igarashi, Kanagawa, JP;
Assignee:
Sumitomo Electric Device Innovations, Inc., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/485 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes a semiconductor layer, an electrode pad that is composed of Au and is provided on the semiconductor layer, a silicon nitride film provided on the semiconductor layer and the electrode pad so that an end portion of the silicon nitride film is located, and a metal layer that contacts a part of a surface of the electrode pad and the end portion of the silicon nitride film and is provided so that another part of the surface of the electrode pad is exposed, the metal layer including any of Ti, Ta and Pt.