Title:
STACKED PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2020/152905
Kind Code:
A1
Abstract:
Provided is a stacked piezoelectric element that is capable of accurately and efficiently operating a target. The stacked piezoelectric element 100 comprises a stacked structure 50 in which a plurality of piezoelectric body layers have been stacked in a stacking direction. An expansion-contraction piezoelectric element 10 comprises a first piezoelectric body layer 11 and an expansion-contraction electrode pair 19 sandwiching the first piezoelectric body layer 11, and expands and contracts in the lengthwise direction of the first piezoelectric body layer via signals input to the expansion-contraction electrode pair 19. A flexural piezoelectric element 20 comprises a second piezoelectric body layer 21 and a flexural electrode pair 29 sandwiching the second piezoelectric body layer 21, and flexes in the widthwise direction of the second piezoelectric body layer via signals input to the flexural electrode pair 29. The expansion-contraction piezoelectric element 10 is disposed so as to include a central position in the stacking direction of the stacked structure 50.
Inventors:
ARASAWA TETSUYA (JP)
NIIMI KOICHI (JP)
UCHIDA NAOHIKO (JP)
NIIMI KOICHI (JP)
UCHIDA NAOHIKO (JP)
Application Number:
PCT/JP2019/036499
Publication Date:
July 30, 2020
Filing Date:
September 18, 2019
Export Citation:
Assignee:
FUKOKU KK (JP)
International Classes:
H01L41/083; H01L41/047; H01L41/09; H02N2/00
Domestic Patent References:
| WO2007091443A1 | 2007-08-16 | |||
| WO2016158743A1 | 2016-10-06 |
Foreign References:
| JP2011072129A | 2011-04-07 | |||
| JP2013182904A | 2013-09-12 | |||
| JP2011171754A | 2011-09-01 | |||
| JP2018182194A | 2018-11-15 |
Attorney, Agent or Firm:
OFUCHI, Michie et al. (JP)
Download PDF: