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
Publication statusPublished - 2010 Dec 1
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

Publication series

Name20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Volume2

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

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • Cite this

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