Title:
ELECTROACOUSTIC TRANSDUCER AND ELECTROACOUSTIC CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/136591
Kind Code:
A1
Abstract:
The present invention provides an electroacoustic transducer and an electroacoustic conversion system with which it is possible to stably reproduce a high-quality sound and expand a reproducible-frequency bandwidth. An electroacoustic transducer having: an electroacoustic conversion film that has a polymer composite piezoelectric medium formed by dispersing piezoelectric particles in a viscoelastic matrix that comprises a polymer material having viscoelasticity at normal temperature, and two thin-film electrodes laminated on both sides of the polymer composite piezoelectric medium; and an elastic support arranged in close adhesion to one principal surface of the electroacoustic conversion film so as to cause the electroacoustic conversion film to curve, wherein the curved portion of the electroacoustic conversion film is quadrilateral in shape, the length of the short side of the curved portion is 10 cm or less, and the length of the long side of the curved portion is 30 cm or more.
Inventors:
MIYOSHI TETSU (JP)
Application Number:
PCT/JP2016/054739
Publication Date:
September 01, 2016
Filing Date:
February 18, 2016
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H04R17/00; H04R1/02; H04R1/40; H04R7/12
Domestic Patent References:
| WO2013047872A1 | 2013-04-04 |
Foreign References:
| JP2009278498A | 2009-11-26 | |||
| JP2015029270A | 2015-02-12 | |||
| JP2012142546A | 2012-07-26 | |||
| JP2012095193A | 2012-05-17 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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