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Title:
ELECTROACOUSTIC CONVERSION FILM, METHOD FOR PRODUCING SAME, ELECTROACOUSTIC TRANSDUCER, FLEXIBLE DISPLAY, VOCAL CORD MICROPHONE AND SENSOR FOR MUSICAL INSTRUMENTS
Document Type and Number:
WIPO Patent Application WO/2017/018313
Kind Code:
A1
Abstract:
Provided are: an electroacoustic conversion film which has high conversion efficiency and is capable of reproduction with a sufficient sound volume; a method for producing this electroacoustic conversion film; an electroacoustic transducer; a flexible display; a vocal cord microphone; and a sensor for musical instruments. 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; two thin film electrodes which are respectively laminated on both surfaces of the polymer composite piezoelectric body; and two protective layers which are respectively laminated on the two thin film electrodes. The intensity ratio α1 of the peak intensity of the (002) plane and the peak intensity of the (200) plane ascribed to the piezoelectric particles as the polymer composite piezoelectric body is evaluated by an X-ray diffraction method, namely the intensity ratio α1 = (peak intensity of (002) plane)/( (peak intensity of (002) plane) + (peak intensity of (200) plane)) is 0.6 or more but less than 1.

Inventors:
MURAKAMI Naoki (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
MIYOSHI Tetsu (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
Application Number:
JP2016/071392
Publication Date:
February 02, 2017
Filing Date:
July 21, 2016
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
H04R17/00; G10H3/14; H01L41/09; H01L41/113; H01L41/18; H01L41/257; H04R17/02
Foreign References:
JP2014014063A2014-01-23
JP2010030875A2010-02-12
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (Yusen Iwamoto-cho Bldg. 6F, 3-3 Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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