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:
Dec. 03, 2013
Filed:
Oct. 28, 2010
Applicants:
Ichiro Asaoka, Chino, JP;
Toshihiro Shimizu, Fujimi-machi, JP;
Inventors:
Ichiro Asaoka, Chino, JP;
Toshihiro Shimizu, Fujimi-machi, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); H01L 41/00 (2013.01); H02N 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A piezoelectric element has a first electrode, a piezoelectric layer, and a second electrode. The first electrode is preferentially oriented along the (111) plane in the direction parallel to the film surface and, in the direction perpendicular to the film surface, the sum of the (111) and (200) planes relative to the sum of the (111), (200), and (220) planes is 20% or less in terms of the abundance ratio.