Title:
MULTILAYER PIEZOELECTRIC ELEMENT
Document Type and Number:
WIPO Patent Application WO/2022/190729
Kind Code:
A1
Abstract:
Provided is a multilayer piezoelectric element in which heat generation can be reduced while a good piezoelectric property is maintained. This multilayer piezoelectric element is a laminate of a plurality of piezoelectric films each having a piezoelectric body layer having a macromolecular complex piezoelectric body containing piezoelectric body particles in a matrix including a macromolecular material, and electrode layers formed on both sides of the piezoelectric body layer. When a value obtained by dividing a capacitive reactance Xc of the piezoelectric films at a frequency of 1 kHz by an equivalent series resistance ESR is 1, a value XE20 obtained by dividing the capacitive reactance Xc at a frequency of 20 kHz by the equivalent series resistance ESR is in the range of 0.6 to 1.5.
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Inventors:
MIYOSHI TETSU (JP)
KAGAWA YUSUKE (JP)
KAGAWA YUSUKE (JP)
Application Number:
PCT/JP2022/004356
Publication Date:
September 15, 2022
Filing Date:
February 04, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
B06B1/06; H01L41/047; H01L41/083; H01L41/09; H01L41/113; H01L41/18; H01L41/187; H01L41/23; H01L41/29; H04R17/00
Domestic Patent References:
| WO2020095812A1 | 2020-05-14 | |||
| WO2017018313A1 | 2017-02-02 |
Foreign References:
| US20070247028A1 | 2007-10-25 | |||
| JP2014014063A | 2014-01-23 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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