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:
Aug. 27, 2013
Filed:
May. 04, 2009
Applicant:
Kentaro Tada, Kanagawa, JP;
Inventor:
Kentaro Tada, Kanagawa, JP;
Assignee:
Renesas Electronics Corporation, Kawasaki-Shi, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/06 (2012.01);
U.S. Cl.
CPC ...
Abstract
In an n-type semiconductor layer that contains gallium (Ga), contact resistance is to be suppressed at a low level. An n-side electrode is provided on a surface of the n-type semiconductor layer containing Ga. The electrode includes a metal layer having a Ga content of equal to or more than 1 at % and equal to or less than 25 at %. The metal layer is disposed in contact with the n-type semiconductor layer.