The development of ultra thin speakers for mobile phones

Yasuharu Onishi, Jun Kuroda, Yukio Murata, Motoyoshi Komoda, Nozomi Toki, Yasuhiro Sasaki, Yasuhiro Oikawa, Yoshio Yamasaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper we describe the design of novel, ultra-thin piezoelectric speakers for mobile phones. Due to the expansion of the slim mobile phone market, ultra-thin speakers providing high-quality sound are in strong demand. Piezoelectric speakers are much thinner than the electrodynamic speakers generally used in mobile phones. However, to achieve high-quality sound, the rigid structure and low internal friction of piezoelectric speakers must be improved. In this study, we have successfully developed highly reliable 0.9-mm-thick piezoelectric speakers that consist of a piezoelectric bimorph transducer and an elastic support structure and that provide high-quality sound. We have also successfully used these ultra thin speakers in a slim mobile phone. Copyright

    Original languageEnglish
    Title of host publication20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
    Pages1258-1265
    Number of pages8
    Volume2
    Publication statusPublished - 2010
    Event20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society - Sydney, NSW, Australia
    Duration: 2010 Aug 232010 Aug 27

    Other

    Other20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society
    CountryAustralia
    CitySydney, NSW
    Period10/8/2310/8/27

    Fingerprint

    acoustics
    piezoelectric transducers
    internal friction
    rigid structures
    electrodynamics
    expansion

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Onishi, Y., Kuroda, J., Murata, Y., Komoda, M., Toki, N., Sasaki, Y., ... Yamasaki, Y. (2010). The development of ultra thin speakers for mobile phones. In 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society (Vol. 2, pp. 1258-1265)

    The development of ultra thin speakers for mobile phones. / Onishi, Yasuharu; Kuroda, Jun; Murata, Yukio; Komoda, Motoyoshi; Toki, Nozomi; Sasaki, Yasuhiro; Oikawa, Yasuhiro; Yamasaki, Yoshio.

    20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. Vol. 2 2010. p. 1258-1265.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Onishi, Y, Kuroda, J, Murata, Y, Komoda, M, Toki, N, Sasaki, Y, Oikawa, Y & Yamasaki, Y 2010, The development of ultra thin speakers for mobile phones. in 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. vol. 2, pp. 1258-1265, 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society, Sydney, NSW, Australia, 10/8/23.
    Onishi Y, Kuroda J, Murata Y, Komoda M, Toki N, Sasaki Y et al. The development of ultra thin speakers for mobile phones. In 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. Vol. 2. 2010. p. 1258-1265
    Onishi, Yasuharu ; Kuroda, Jun ; Murata, Yukio ; Komoda, Motoyoshi ; Toki, Nozomi ; Sasaki, Yasuhiro ; Oikawa, Yasuhiro ; Yamasaki, Yoshio. / The development of ultra thin speakers for mobile phones. 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. Vol. 2 2010. pp. 1258-1265
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