Title:
PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC SENSOR
Document Type and Number:
WIPO Patent Application WO/2022/210916
Kind Code:
A1
Abstract:
This piezoelectric element comprises a layered body and an external electrode. In the layered body, a plurality of piezoelectric bodies and internal electrodes are laminated. The external electrode is positioned on a side surface of the layered body and is connected to the internal electrodes. The layered body has an active region sandwiched between internal electrodes having different polarities, and an inactive region sandwiched between internal electrodes having the same polarity. The internal electrodes contain Ag and Pd as primary components. An active section of the internal electrodes located in the active region is a first section. An inactive section of the internal electrodes located in the inactive region has a second section with a higher Pd content than the first section. The first section has a higher Ag content than the second section.
Inventors:
KAMEGAWA SHOJI (JP)
Application Number:
PCT/JP2022/016098
Publication Date:
October 06, 2022
Filing Date:
March 30, 2022
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
G01L1/16; H01L41/047; H01L41/083; H01L41/107; H01L41/113; H01L41/187; H01L41/29; H01L41/297
Foreign References:
| JP2008010529A | 2008-01-17 | |||
| JP2017183541A | 2017-10-05 | |||
| JP2020123664A | 2020-08-13 | |||
| JP2017010998A | 2017-01-12 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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