Title:
PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC VIBRATION DEVICE, AND MOBILE TERMINAL
Document Type and Number:
WIPO Patent Application WO/2014/098077
Kind Code:
A1
Abstract:
[Problem] To provide: a piezoelectric actuator having reduced noise caused by the vibration of a piezoelectric element; a piezoelectric vibration device; and a mobile terminal. [Solution] This piezoelectric actuator (1) has: a piezoelectric element (10) comprising a laminated body (14) having an internal electrode (12) and a piezoelectric layer (13) laminated therein, and a surface electrode (15) electrically connected to the internal electrode (12) on one main surface of the laminated body (14); a flexible substrate (2) electrically joined to the surface electrode (15); and a reinforcing plate (3) fixed to an area above the flexible substrate (2) and overlapping the piezoelectric element (10). A bent section (31) is provided in the reinforcing plate (3).
Inventors:
MURAKAMI MICHIYA (JP)
Application Number:
PCT/JP2013/083744
Publication Date:
June 26, 2014
Filing Date:
December 17, 2013
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H01L41/047; H01L41/04; H01L41/053; H01L41/083; H01L41/09; H04R1/02; H04R7/04; H04R17/00; H05K1/02
Domestic Patent References:
| WO2012117738A1 | 2012-09-07 |
Foreign References:
| JP2004276487A | 2004-10-07 | |||
| JP2003023186A | 2003-01-24 | |||
| JP2011199206A | 2011-10-06 |
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