发明授权
- 专利标题: Oscillator device and electronic apparatus
- 专利标题(中): 振荡器和电子设备
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申请号: US13990904申请日: 2011-12-20
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公开(公告)号: US09306148B2公开(公告)日: 2016-04-05
- 发明人: Yasuharu Onishi , Yuichiro Kishinami , Shigeo Satou , Jun Kuroda , Yukio Murata , Motoyoshi Komoda , Nobuhiro Kawashima , Tatsuya Uchikawa
- 申请人: Yasuharu Onishi , Yuichiro Kishinami , Shigeo Satou , Jun Kuroda , Yukio Murata , Motoyoshi Komoda , Nobuhiro Kawashima , Tatsuya Uchikawa
- 申请人地址: JP Tokyo
- 专利权人: NEC CORPORATION
- 当前专利权人: NEC CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Young & Thompson
- 优先权: JP2010-282666 20101220
- 国际申请: PCT/JP2011/007099 WO 20111220
- 国际公布: WO2012/086180 WO 20120628
- 主分类号: H04R17/00
- IPC分类号: H04R17/00 ; H01L41/053 ; H04R1/40 ; H01L41/09 ; H04R1/28 ; G01S15/08
摘要:
In an electro-acoustic transducer 100 which is an oscillator device, center positions of principal surfaces of piezoelectric elements 130 that are positioned on both surfaces of an elastic member 120 are different from each other. As such, since the two piezoelectric elements 130 are disposed asymmetrically on the upper and lower sides in the electro-acoustic transducer 100, it is possible to prevent vibrations of reversed phases at the time of divided vibration in which the reversed phases overlap with each other. In other words, since it is possible to prevent the generation of sound waves due to the vibration of local reversed phases, the sound pressure level can be improved.
公开/授权文献
- US20130242702A1 OSCILLATOR DEVICE AND ELECTRONIC APPARATUS 公开/授权日:2013-09-19
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