Title:
PIEZOELECTRIC FILM
Document Type and Number:
WIPO Patent Application WO/2020/080382
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a piezoelectric film having good piezoelectricity. The problem can be solved by a piezoelectric film composed of a vinylidene fluoride/tetrafluoroethylene copolymer film and having a residual polarization of at least 40 mC/m2.
Inventors:
KODANI TETSUHIRO (JP)
SAKAMI SAORI (JP)
BITOU SHINYA (JP)
KANEMURA TAKASHI (JP)
SUGIYAMA AKINARI (JP)
SAKAMI SAORI (JP)
BITOU SHINYA (JP)
KANEMURA TAKASHI (JP)
SUGIYAMA AKINARI (JP)
Application Number:
PCT/JP2019/040565
Publication Date:
April 23, 2020
Filing Date:
October 16, 2019
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H01L41/193; A61B5/11; G01L1/16; H01L41/257; H01L41/318; H04R17/00; H04R17/02
Domestic Patent References:
| WO2015053346A1 | 2015-04-16 |
Foreign References:
| JPS61102791A | 1986-05-21 | |||
| JP2016219804A | 2016-12-22 | |||
| JP2008171935A | 2008-07-24 | |||
| JP2016219804A | 2016-12-22 | |||
| JP2011181748A | 2011-09-15 |
Other References:
See also references of EP 3869576A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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