Invention Grant
- Patent Title: Piezoelectric speaker device
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Application No.: US14886160Application Date: 2015-10-19
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Publication No.: US09807515B2Publication Date: 2017-10-31
- Inventor: Masamichi Ando
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Nagaokakyo-Shi, Kyoto-Fu
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Nagaokakyo-Shi, Kyoto-Fu
- Agency: Arent Fox LLP
- Priority: JP2010-232158 20101015
- Main IPC: H04R29/00
- IPC: H04R29/00 ; H04R17/00 ; H04R17/02 ; H04R7/02

Abstract:
A piezoelectric speaker device that includes an organic polymer piezoelectric film, at least one pair of electrodes provided in contact with the piezoelectric film and the at least one pair of electrodes including a user-side electrode on a first side of the piezoelectric film, an insulation layer on the user-side electrode, a flaw detection electrode line on the insulation layer, and a detection circuit configured to detect whether the flaw detection electrode line is in a normal electric conduction state.
Public/Granted literature
- US20160044421A1 Piezoelectric Speaker Device Public/Granted day:2016-02-11
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