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:
Nov. 24, 2009
Filed:
Feb. 14, 2008
Toshihiro Ifuku, Yokohama, JP;
Tetsuro Fukui, Yokohama, JP;
Kenichi Takeda, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Hiroshi Nakaki, Yokohama, JP;
Rikyu Ikariyama, Yokohama, JP;
Osami Sakata, Sayo-gun, JP;
Toshihiro Ifuku, Yokohama, JP;
Tetsuro Fukui, Yokohama, JP;
Kenichi Takeda, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Hiroshi Nakaki, Yokohama, JP;
Rikyu Ikariyama, Yokohama, JP;
Osami Sakata, Sayo-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention provides a piezoelectric film having a large piezoelectric property, and a piezoelectric element, a liquid discharge head and a liquid discharge apparatus utilizing the same. The piezoelectric film is formed by an epitaxial oxide of <100> orientation having at least a tetragonal crystal structure, in which the oxide is a perovskite type composite oxide represented by a general formula ABOand contains at least domains C, D and E of [100] orientation having mutual deviation in crystal direction, where the angular deviation between [100] directions in domains C and D, in domains D and E, in domains C and E and in domains D and E are respectively 5° or less, 5° or less, 0.3° or less, and 0.3° or more, and the angular deviation between [001] directions in domains C and E and in domains D and E are respectively 1.0° or more, and 1.0° or more.