Invention Grant
- Patent Title: Piezoelectric acoustic device and electronic apparatus
- Patent Title (中): 压电声装置和电子设备
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Application No.: US12742369Application Date: 2008-11-12
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Publication No.: US08385578B2Publication Date: 2013-02-26
- Inventor: Yasuharu Onishi , Yasuhiro Sasaki , Masatake Takahashi , Ukyo Mori , Jun Kuroda , Nozomi Toki , Yukio Yokoyama
- Applicant: Yasuharu Onishi , Yasuhiro Sasaki , Masatake Takahashi , Ukyo Mori , Jun Kuroda , Nozomi Toki , Yukio Yokoyama
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2007-293519 20071112
- International Application: PCT/JP2008/070587 WO 20081112
- International Announcement: WO2009/063905 WO 20090522
- Main IPC: H04R1/02
- IPC: H04R1/02
Abstract:
A piezoelectric acoustic device comprises: at least two piezoelectric actuators; a support body that supports the at least two piezoelectric actuators; and a signal input unit that drives the at least two piezoelectric actuators at respective arbitrary times. At least one pair of piezoelectric actuators among the at least two piezoelectric actuators is arranged in such a manner that their sound radiation surfaces face each other with a predetermined gap.
Public/Granted literature
- US20100246863A1 PIEZOELECTRIC ACOUSTIC DEVICE AND ELECTRONIC APPARATUS Public/Granted day:2010-09-30
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