Title:
ELECTROACOUSTIC TRANSDUCTION FILM
Document Type and Number:
WIPO Patent Application WO/2014/162976
Kind Code:
A1
Abstract:
Provided is an electroacoustic transduction film that is suitable for speakers having flexibility or the like and that can stably exhibit a predetermined acoustic characteristic regardless of the status of curvature. This problem is solved by arranging that an electroacoustic transduction film have a polymeric composite piezoelectric substance, which is obtained by dispersing piezoelectric grains in a viscoelastic matrix composed of a polymeric material having viscoelasticity at ordinary temperatures, and also have electrode layers sandwiching the polymeric composite piezoelectric substance and that the area ratio of those surfaces of the piezoelectric grains which come into contact with the electrode layers be equal to or less than 50 percent.
Inventors:
MIYOSHI TETSU (JP)
HATANAKA YUSUKE (JP)
HATANAKA YUSUKE (JP)
Application Number:
PCT/JP2014/058858
Publication Date:
October 09, 2014
Filing Date:
March 27, 2014
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H04R17/00; H01L41/047; H01L41/09; H01L41/18; H01L41/187; H01L41/23; H01L41/257; H01L41/29; H01L41/37; H01L41/43; H04R7/04
Foreign References:
| JPH0946792A | 1997-02-14 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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