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:
Apr. 12, 2011
Filed:
Mar. 20, 2009
Masayuki Kitamura, Kanagawa, JP;
Junichi Wada, Kanagawa, JP;
Hideto Matsuyama, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor device includes a contact plug electrically connected to a semiconductor substrate; a first barrier metal film with a columnar crystal structure arranged in contact with the semiconductor substrate at least on a bottom surface side of the contact plug; an amorphous film made of a material of the first barrier metal film arranged in contact with the first barrier metal film at least on the bottom surface side of the contact plug; a second barrier metal film made of a material identical to that of the first barrier metal film and having a columnar crystal structure, at least a portion of which is arranged in contact with the amorphous film on the bottom surface side and a side surface side of the contact plug; and a dielectric film arranged on the side surface side of the contact plug.