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US 6,661,158 B2Granted
Piezoelectric device and method for producing the same
AssigneeDenso Corporation
InventorNaoyuki Kawazoe
Life of this patent
Estimating the term…
Abstract
A stacked piezoelectric device 1 comprising a plurality of piezoelectric layers which are stacked one over another has an abutment 61, 62 which is brought into direct abutment with at least one end face 101, 102 of the piezoelectric device 1 in a stretching direction and a coating member 4 having electrically insulating properties and which covers an abutment portion 60 between the abutment member 61, 62 and the piezoelectric device 1 so that the abutment condition of the abutment member and the piezoelectric device can be maintained.
Claims6
A stacked-type piezoelectric device comprising:
- a plurality of piezoelectric layers and electrode layers which are stacked in alternate fashion,
- an abutment member which is brought into direct abutment with at least one end face of one of the piezoelectric layers in a stretching direction thereof, the abutment member being made of a different material than the material of the piezoelectric layers;
- a coating member having electric insulating properties which covers at least part of the abutment portion between said abutment member and said one of the piezoelectric layers so that the state is maintained in which said abutment member and said one of the piezoelectric layers are in direct abutment with each other without adhesive interposed between the abutment member and said one of the piezoelectric layers.
Dependencies are inferred from the claim text.