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:
Jul. 28, 2009
Filed:
Feb. 20, 2006
Applicants:
Setsuya Iwashita, Nirasaki, JP;
Koji Ohashi, Chino, JP;
Takamitsu Higuchi, Matsumoto, JP;
Inventors:
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for manufacturing a piezoelectric element includes the steps of forming a first electrode above a substrate, forming, above the first electrode, a piezoelectric layer composed of a piezoelectric material having a perovskite structure, and forming a second electrode above the piezoelectric layer, wherein the step of forming the first electrode includes forming a layer containing nickel, and forming, above the layer containing nickel, a lanthanum nickelate layer that is oriented to a cubic (100).