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. 16, 2019
Filed:
Aug. 30, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/047 (2006.01); H01L 41/09 (2006.01); H01L 41/04 (2006.01); B41J 2/045 (2006.01); H01L 41/08 (2006.01); H01L 41/187 (2006.01); H01L 41/318 (2013.01);
U.S. Cl.
CPC ...
H01L 41/042 (2013.01); B41J 2/0459 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); H01L 41/0815 (2013.01); H01L 41/0973 (2013.01); H01L 41/1876 (2013.01); H01L 41/318 (2013.01);
Abstract
A piezoelectric device includes a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer provided between the first electrode and the second electrode, and a driving system that drives the piezoelectric element by applying voltage to the first electrode and the second electrode, in which the driving system drives the piezoelectric element at a maximum voltage that is lower than a voltage at which a tunnel current or a Poole-Frenkel current starts to be generated in the piezoelectric element.