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:
Mar. 31, 2015
Filed:
Mar. 20, 2013
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Kazuya Kitada, Suwa, JP;
Tsutomu Asakawa, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/14 (2006.01); H01L 41/18 (2006.01); H01L 41/08 (2006.01); H01L 41/187 (2006.01); B41J 2/16 (2006.01); H01L 41/318 (2013.01);
U.S. Cl.
CPC ...
B41J 2/14201 (2013.01); H01L 41/183 (2013.01); H01L 41/0805 (2013.01); H01L 41/1878 (2013.01); B41J 2/14233 (2013.01); B41J 2/161 (2013.01); B41J 2/1623 (2013.01); B41J 2/1628 (2013.01); B41J 2/1629 (2013.01); B41J 2/1642 (2013.01); B41J 2/1645 (2013.01); B41J 2/1646 (2013.01); H01L 41/318 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/14419 (2013.01);
Abstract
A liquid ejecting head that discharges a liquid through a nozzle aperture includes a piezoelectric element. The piezoelectric element includes a piezoelectric layer and a first and a second electrode provided for the piezoelectric layer. The piezoelectric layer is made of a complex oxide containing bismuth, iron, barium and titanium and having a perovskite structure. The iron content in the piezoelectric layer is higher at the interface with the second electrode than other portions in the thickness direction of the piezoelectric layer.