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:
Jul. 24, 2012
Filed:
Oct. 10, 2004
Applicants:
Tadahiro Ohmi, Miyagi, JP;
Akihiro Morimoto, Miyagi, JP;
Inventors:
Tadahiro Ohmi, Miyagi, JP;
Akihiro Morimoto, Miyagi, JP;
Assignee:
Foundation for Advancement of International Science, Tsukuba-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
As a substrate for a semiconductor device, a metal substrate is used, and the metal substrate is composed of a metal base body made of a first metal and a connecting metal layer made of a second metal for covering the metal base body. The substrate has a structure wherein a diffusion preventing layer for preventing diffusion of the first metal is provided on the connecting metal layer.