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. 19, 2011
Filed:
Jun. 04, 2007
Shinichiro Kakei, Tokyo, JP;
Hitoshi Saita, Tokyo, JP;
Kuniji Koike, Tokyo, JP;
Kenji Horino, Tokyo, JP;
Shinichiro Kakei, Tokyo, JP;
Hitoshi Saita, Tokyo, JP;
Kuniji Koike, Tokyo, JP;
Kenji Horino, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A dielectric device having a dielectric layer and first to nth metal layers (where n is an integer of 2 or greater) in contact with the dielectric layer. At least one of the first to nth metal layers contains a base metal. Interfaces between the first to nth metal layers and the dielectric layer have respective arithmetic mean roughnesses of Rato Ra(nm), while an average value Ram (nm) of the arithmetic mean roughnesses of Rato Ra(nm) and a thickness T (nm) of the dielectric layer satisfy T/Ram ≧1.3.