Title:
LAMINATED PIEZOELECTRIC ELEMENT, JETTING DEVICE PROVIDED WITH SAME, AND FUEL JETTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/101056
Kind Code:
A1
Abstract:
Provided is a highly durable laminated piezoelectric element wherein a conductive connecting member is not disconnected even in the case where the laminated piezoelectric element is continuously driven for a long period of time in a high electric field under high pressure.
A laminated piezoelectric element (1) is provided with: a laminated body (7) wherein piezoelectric layers (3) and internal electrode layers (5) are alternately laminated; an external electrode (9) which is bonded to the side surface of the laminated body (7) and is electrically connected to the internal electrode layers (5); and a conductive connecting member (8), which is provided on the surface of the external electrode (9) and repeatedly has recesses and protrusions at least in the laminating direction of the laminated body (7). Since the conductive connecting member (8) can absorb stress generated due to expansion and contraction of the laminated body (7), disconnection of the conductive connecting member (8) due to generation of cracks can be suppressed.
Inventors:
NAKAMURA SHIGENOBU (JP)
Application Number:
PCT/JP2010/052864
Publication Date:
September 10, 2010
Filing Date:
February 24, 2010
Export Citation:
Assignee:
KYOCERA CORP (JP)
NAKAMURA SHIGENOBU (JP)
NAKAMURA SHIGENOBU (JP)
International Classes:
H01L41/083; F02M51/06; F02M55/02; H01L41/187; H01L41/22; H01L41/23; H01L41/27; H01L41/293
Foreign References:
| JP2006216850A | 2006-08-17 | |||
| JP2008211054A | 2008-09-11 | |||
| JP2005518676A | 2005-06-23 |
Other References:
See also references of EP 2405503A4
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