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Title:
ELECTROSTATIC SOUND WAVE GENERATION DEVICE AND ELECTROSTATIC SPEAKER
Document Type and Number:
WIPO Patent Application WO/2019/177122
Kind Code:
A1
Abstract:
The present invention provides technology that makes it possible to reduce the drive voltage of an electrostatic sound wave generation device or an electrostatic speaker and minimize power consumption. An electrostatic sound wave generation device is provided with: a fixed electrode 11 that has a plate-like shape and that is provided with one or more through holes 11a passing therethrough in the thickness direction; two vibrating electrodes 12 that have a plate-like shape or a film-like shape, that are arranged with the fixed electrode 11 therebetween so as to face the fixed electrode 11, and in which at least a central part thereof is movable in the thickness direction with respect to the fixed electrode 11; a connection member 14 for connecting the two vibrating electrodes via the through holes 11a; and two outer fixed electrodes 15, 16 that have a plate-like shape and that sandwich the vibrating electrodes 12 together with the fixed electrode 11 as a result of being arranged so as to face the fixed electrode 11 from the opposite side with respect to the vibrating electrodes 12.

Inventors:
KATAOKA, Tomohiro (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
TAKAHASHI, Toshiyuki (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
HORIIKE, Sumio (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
NISHIO, Hidetoshi (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
TANAKA, Shuji (2-1-1 Katahira, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
FROEMEL, Joerg (2-1-1 Katahira, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
OHTAKA, Koichi (2-1-1 Katahira, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
MUROYAMA, Masanori (2-1-1 Katahira, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
Application Number:
JP2019/010686
Publication Date:
September 19, 2019
Filing Date:
March 14, 2019
Export Citation:
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Assignee:
OMRON CORPORATION (801 Minamifudodo-cho, Horikawahigashiiru Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
TOHOKU UNIVERSITY (2-1-1, Katahira Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
International Classes:
H04R19/00; H04R3/06
Foreign References:
JP2015130636A2015-07-16
JP2012023559A2012-02-02
JP2012080529A2012-04-19
JPS60501437A1985-08-29
JP2012029290A2012-02-09
Attorney, Agent or Firm:
IP FIRM SHUWA (Acropolis 21 Bldg. 8th Floor, 4-10 Higashi Nihonbashi 3-chome, Chuo-k, Tokyo 04, 〒1030004, JP)
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