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. 14, 2020
Filed:
Dec. 11, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Kensuke Mihara, Osaka, JP;
Takakiyo Harigai, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/08 (2006.01); B41J 2/14 (2006.01); H01L 41/187 (2006.01); H01L 41/09 (2006.01);
U.S. Cl.
CPC ...
H01L 41/0815 (2013.01); B41J 2/14233 (2013.01); H01L 41/0973 (2013.01); H01L 41/1876 (2013.01);
Abstract
A piezoelectric functional film includes a base layer and a piezoelectric layer. The piezoelectric layer contains niobium-doped lead zirconate titanate. The base layer contains one of niobium-doped lead titanate, (niobium, lanthanum)-doped lead titanate, and (niobium, lanthanum, magnesium)-doped lead titanate.