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:
Dec. 15, 2005
Applicants:
Setsuya Iwashita, Nirasaki, JP;
Takeshi Kijima, Matsumoto, JP;
Koji Ohashi, Chino, JP;
Inventors:
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); H01L 41/047 (2006.01);
U.S. Cl.
CPC ...
Abstract
A piezoelectric device includes: a substrate; a first conductive layer formed over the substrate, the first conductive layer including at least one buffer layer formed of a (001) preferentially oriented lanthanum-based layered perovskite compound; a piezoelectric layer formed over the first conductive layer and including a piezoelectric having a perovskite structure; and a second conductive layer electrically connected with the piezoelectric layer.