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:
Apr. 19, 2016
Filed:
Mar. 26, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Xiaoxing Wang, Chino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); H01L 41/187 (2006.01); B41J 2/14 (2006.01); C04B 35/495 (2006.01); H01L 41/09 (2006.01);
U.S. Cl.
CPC ...
H01L 41/1873 (2013.01); B41J 2/14201 (2013.01); B41J 2/14233 (2013.01); C04B 35/495 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/03 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3248 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3268 (2013.01); C04B 2235/3294 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/77 (2013.01); C04B 2235/80 (2013.01); H01L 41/0973 (2013.01); H01L 41/1878 (2013.01);
Abstract
A piezoelectric element is provided. The piezoelectric element includes a piezoelectric layer made of a perovskite compound containing sodium, potassium, lithium, niobium and tantalum and bismuth manganate. The piezoelectric element may also include electrodes for applying a voltage to the piezoelectric layer. The piezoelectric layer may contain 0.25 to 1 mol % of bismuth manganate relative to the perovskite ceramics.