Title:
ELECTROACOUSTIC CONVERSION FILM AND ELECTROACOUSTIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2016/208385
Kind Code:
A1
Abstract:
Provided are: an electroacoustic conversion film which is capable of reproduction with a sufficient sound volume, while being capable of preventing appearance defects; and an electroacoustic transducer. This electroacoustic conversion film comprises: a polymer composite piezoelectric body which is obtained by dispersing piezoelectric particles in a viscoelastic matrix that is formed of a polymer material which has viscoelasticity at room temperature; a lower thin film electrode which is laminated on one main surface of the polymer composite piezoelectric body; a lower protective layer which is laminated on the lower thin film electrode; an upper thin film electrode which is laminated on the other main surface of the polymer composite piezoelectric body; an upper protective layer which is laminated on the upper thin film electrode; and a coloring layer which is laminated in a position that is closer to the surface layer than the upper thin film electrode and/or a coloring layer which is laminated in a position that is closer to the surface layer than the lower thin film electrode.
Inventors:
OZAWA SHIN (JP)
INOUE DAISUKE (JP)
MIYOSHI TETSU (JP)
INOUE DAISUKE (JP)
MIYOSHI TETSU (JP)
Application Number:
PCT/JP2016/066948
Publication Date:
December 29, 2016
Filing Date:
June 07, 2016
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H04R17/00; H04R7/04
Foreign References:
| JPS56167698U | 1981-12-11 | |||
| JPS61191698U | 1986-11-28 | |||
| JP2014014063A | 2014-01-23 | |||
| JPH01197903A | 1989-08-09 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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