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. 23, 2022
Filed:
Mar. 28, 2017
Daikin Industries, Ltd., Osaka, JP;
Tetsuhiro Kodani, Osaka, JP;
Saori Sakami, Osaka, JP;
Hiroyuki Sagami, Osaka, JP;
Takaya Yamada, Osaka, JP;
Shinya Bitou, Osaka, JP;
Eri Mukai, Osaka, JP;
Takashi Kanemura, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
The present invention addresses the problem of providing a bimorph-type piezoelectric film that is less susceptible to the influence of pyroelectric noise resulting from temperature changes, and that makes it possible to provide a pressure-sensitive sensor or the like. The present invention provides a bimorph-type piezoelectric film comprising a first pyroelectric film having piezoelectric anisotropy in an in-plane direction, and a second pyroelectric film having piezoelectric anisotropy in an in-plane direction, the first pyroelectric film and the second pyroelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing.