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:
Aug. 12, 2014
Filed:
Jul. 27, 2009
Yoshikazu Hishinuma, Kanagawa-ken, JP;
Takehiro Kasahara, Minamiashigara, JP;
Yasukazu Nihei, Kanagawa-ken, JP;
Takamichi Fujii, Kanagawa-ken, JP;
Yuuichi Okamoto, Minamiashigara, JP;
Takami Arakawa, Kanagawa-ken, JP;
Takayuki Naono, Kanagawa-ken, JP;
Yoshikazu Hishinuma, Kanagawa-ken, JP;
Takehiro Kasahara, Minamiashigara, JP;
Yasukazu Nihei, Kanagawa-ken, JP;
Takamichi Fujii, Kanagawa-ken, JP;
Yuuichi Okamoto, Minamiashigara, JP;
Takami Arakawa, Kanagawa-ken, JP;
Takayuki Naono, Kanagawa-ken, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A piezoelectric device, including the following on a substrate in the order listed below: a lower electrode, a piezoelectric film which contains a Pb containing perovskite oxide represented by a general expression (P) below, and an upper electrode, in which the piezoelectric film has a layer of pyrochlore oxide on the surface facing the lower electrode, and the average layer thickness of the pyrochlore oxide layer is not greater than 20 nm.ABO  (P)where, A: at least one type of A-site element containing Pb as a major component, B: at least one type of B-site element selected from the group consisting of Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Sc, Co, Cu, In, Sn, Ga, Zn, Cd, Fe, and Ni, and O: an oxygen element.