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Patent Searching and Data


Title:
POLYMER COMPOSITE PIEZOELECTRIC BODY, PIEZOELECTRIC FILM, PIEZOELECTRIC SPEAKER AND FLEXIBLE DISPLAY
Document Type and Number:
WIPO Patent Application WO/2020/261904
Kind Code:
A1
Abstract:
The present invention provides: a polymer composite piezoelectric body which enables the achievement of a piezoelectric film that is capable of outputting a higher sound pressure if used in a piezoelectric speaker; a piezoelectric film which uses this polymer composite piezoelectric body; and a piezoelectric speaker and a flexible device, each of which uses this piezoelectric film. A polymer composite piezoelectric body according to the present invention comprises piezoelectric particles and a polymer matrix that contains a polymer having a group represented by formula (1). Formula (1): *-L1-CR1R2-CN In formula (1), L1 represents a divalent linking group other than a divalent aliphatic hydrocarbon group; and each of R1 and R2 independently represents a hydrogen atom, an alkyl group or an aryl group.

Inventors:
KIKUCHI WATARU (JP)
Application Number:
JP2020/021914
Publication Date:
December 30, 2020
Filing Date:
June 03, 2020
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
C08F20/34; C08K3/18; C08L33/14; G09F9/30; H01L41/09; H01L41/113; H01L41/18; H04R17/00
Domestic Patent References:
WO2017018313A12017-02-02
WO2018061393A12018-04-05
WO2018135457A12018-07-26
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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