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US 2012/0267987 A1Published application
Electromechanical conversion element and drive device
AssigneeKonica Minolta Advanced Layers, Inc.
InventorTomoyuki Yuasa
Life of this patent
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Abstract
A piezoelectric element 1 as an electromechanical conversion element 1 and a drive device S according to the present invention include step portions 21 which are formed on each of a pair of external electrodes 11, 11 formed on outer peripheral surfaces of a laminated body 10 including a plurality of piezoelectric layers 10a and have a difference in height between the boundary of a connection region 11a for connection to a power supply member for supplying power and end sections 10c of the laminated body 10.
Claims11
An electromechanical conversion element, comprising:
- a laminated body in which a plurality of piezoelectric layers made of a piezoelectric material and a plurality of conductive internal electrode layers are alternately laminated;
- and
- a pair of external electrodes which are formed along a lamination direction on outer peripheral surfaces of the laminated body and successively and alternately electrically connected to the internal electrode layers;
- wherein:
- a bonding section used to bond a predetermined member is further provided on an end section of the laminated body in the lamination direction;
- and
- each of the pair of external electrodes has a connection region for connection to a conductive power supply member for supplying power and is formed with a step section having a difference in height between the boundary of the connection region and the end section of the laminated body in the lamination direction.
4 more elements
Dependencies are inferred from the claim text.