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:
Feb. 05, 2013
Filed:
Mar. 27, 2009
Takashi Nakagawa, Tokyo, JP;
Kaoru Mori, Tokyo, JP;
Nobuyuki Ikarashi, Tokyo, JP;
Makiko Oshida, Tokyo, JP;
Takashi Nakagawa, Tokyo, JP;
Kaoru Mori, Tokyo, JP;
Nobuyuki Ikarashi, Tokyo, JP;
Makiko Oshida, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Provided is a capacitor that realizes a capacitance insulation film having a large relative permittivity and has sufficient capacitance even if an occupied space is small with a reduced amount of leakage current. A capacitor includes: a capacitance insulation film; and an upper electrode and lower electrode each formed on both sides of the capacitance insulation film. The capacitance insulation film is a complex oxide whose main ingredients are Zr, Al and O with the composition ratio of Zr to Al being set at (1−x): x (0.01≦x≦0.15) and is composed of a dielectric substance having a crystal structure. The lower electrode is composed of a conductor whose surface contiguous to at least the dielectric film has an amorphous structure.