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:
Mar. 01, 2005
Filed:
Mar. 11, 2004
Tatsuyuki Saito, Ome, JP;
Junji Noguchi, Ome, JP;
Hizuru Yamaguchi, Akishima, JP;
Nobuo Owada, Ome, JP;
Tatsuyuki Saito, Ome, JP;
Junji Noguchi, Ome, JP;
Hizuru Yamaguchi, Akishima, JP;
Nobuo Owada, Ome, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a semiconductor integrated circuit device, upon connection of an interconnection made of aluminum or aluminum alloy and another interconnection made of Cu or Cu alloy, a barrier conductor film or plug is disposed at the joint portion between these interconnections. Among the interconnection layers, the uppermost one is made of a wiring material such as aluminum or aluminum alloy, while the lower, one is made of Cu or Cu alloy. The lowest interconnection is made of a conductive material other than Cu or Cu alloy. For example, the conductive material which permits minute processing and has both low resistance and high EM resistance such as tungsten is employed.