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. 17, 2015
Filed:
Jun. 04, 2012
Applicants:
Hitoshi Sakuma, Tokyo, JP;
Katsuyuki Kurachi, Tokyo, JP;
Yasuhiro Aida, Tokyo, JP;
Kazuhiko Maejima, Tokyo, JP;
Mayumi Nakajima, Tokyo, JP;
Inventors:
Hitoshi Sakuma, Tokyo, JP;
Katsuyuki Kurachi, Tokyo, JP;
Yasuhiro Aida, Tokyo, JP;
Kazuhiko Maejima, Tokyo, JP;
Mayumi Nakajima, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/08 (2006.01); H01L 41/047 (2006.01);
U.S. Cl.
CPC ...
H01L 41/0815 (2013.01); H01L 41/0477 (2013.01);
Abstract
A piezoelectric device has a first electrode film, a piezoelectric film provided on the first electrode film, and a second electrode film provided on the piezoelectric film. At least one of the pair of electrode films is composed of an alloy, and a major component of the alloy is a metal selected from the group consisting of Ti, Al, Mg, and Zn.