Title:
PIEZOELECTRIC ACTUATOR, ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC EQUIPMENT
Document Type and Number:
Japanese Patent JP2016184787
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric actuator, an acoustic generator, an acoustic generation device, and electronic equipment, capable of reducing noise caused by transmission of vibration of a piezoelectric element.SOLUTION: A piezoelectric actuator comprises: a piezoelectric element 1 that has a laminate 13 obtained by laminating an internal electrode 11 and a piezoelectric body layer 12, and a surface electrode 14 provided on an upper surface of the laminate 13 and electrically connected with the internal electrode 11; and a flexible substrate 2 that has a connection part 21 electrically connected with the surface electrode 14 at its one end, and has a connector part 22 at the other end. The flexible substrate 2 has a penetration hole 23 in a region between the connection part 21 and the connector part 22, and a recessed part 231 extending in a thickness direction is provided on an inner wall of the penetration hole 23.SELECTED DRAWING: Figure 1
Inventors:
KUMAZAWA SADAOMI
Application Number:
JP2015062778A
Publication Date:
October 20, 2016
Filing Date:
March 25, 2015
Export Citation:
Assignee:
KYOCERA CORP
International Classes:
H04R17/00; H04R7/04
Domestic Patent References:
| JP2003078995A | 2003-03-14 | |||
| JPH1093157A | 1998-04-10 |
Foreign References:
| WO2014091785A1 | 2014-06-19 | |||
| WO2014098077A1 | 2014-06-26 |
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