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:
Aug. 06, 2019
Filed:
May. 11, 2016
Applicant:
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Inventor:
Kenji Mawatari, Musashino, JP;
Assignee:
KONICA MINOLTA, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01); C04B 35/491 (2006.01); C23C 14/08 (2006.01); H01L 41/09 (2006.01); H01L 41/316 (2013.01); H01L 41/319 (2013.01);
U.S. Cl.
CPC ...
B41J 2/14 (2013.01); B41J 2/16 (2013.01); C04B 35/491 (2013.01); C23C 14/08 (2013.01); H01L 41/09 (2013.01); H01L 41/187 (2013.01); H01L 41/316 (2013.01); H01L 41/319 (2013.01);
Abstract
A piezoelectric thin film is formed by adding a donor element to lead zirconate titanate. In the piezoelectric thin film, a molar ratio of lead to a total sum of zirconium and titanium is 105% or higher, and, when positive and negative coercive electric fields in polarization and electric field hysteresis are referred to as Ec (+) and Ec (−), respectively, a value of |Ec (+) |/|Ec (−) | is 0.5 or more and 1.5 or less.