Title:
POLYMER COMPOSITE PIEZOELECTRIC BODY AND PIEZOELECTRIC FILM
Document Type and Number:
WIPO Patent Application WO/2020/261957
Kind Code:
A1
Abstract:
Provided is a polymer composite piezoelectric body and a piezoelectric film in which variations in the piezoelectric conversion efficiency are suppressed to provide stable piezoelectric conversion characteristics under various humid environments. This polymer composite piezoelectric body includes piezoelectric particles in a matrix that includes a polymer material. The pore volume per unit area of a sample of the polymer composite piezoelectric body is 0.01 μL/mm2 to 1.7 μL/mm2, the sample being obtained by cutting the polymer composite piezoelectric body in the direction of thickness, cutting out a 12.5 mm × 25 mm piece, subjecting this piece to mercury porosimetry to determine the intruded mercury volume, and dividing the intruded mercury volume by the cross-section area of the sample.
Inventors:
HAGA MASAYUKI (JP)
Application Number:
PCT/JP2020/022508
Publication Date:
December 30, 2020
Filing Date:
June 08, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H04R17/00; H01L41/053; H01L41/18; H01L41/257
Domestic Patent References:
| WO2011083611A1 | 2011-07-14 | |||
| WO2016121765A1 | 2016-08-04 |
Foreign References:
| JP2014195132A | 2014-10-09 | |||
| JP2014014063A | 2014-01-23 | |||
| JP2014209724A | 2014-11-06 | |||
| JP2016015354A | 2016-01-28 |
Other References:
See also references of EP 3993443A4
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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