Patent ID: 8189296

Claim:
A method for producing a thin-film piezoelectric device, comprising: a step of stacking a first electrode layer, a piezoelectric layer, and a second electrode layer in order on a first substrate to form a first laminate; a step of stacking a support layer on a second substrate to form a second laminate; a step of bonding the first laminate and the second laminate through an adhesive layer so that the second electrode layer and the support layer are opposed to each other, to form a third laminate consisting of the first laminate, the adhesive layer, and the second laminate; a step of removing the first substrate from the third laminate; a step of processing the third laminate in a desired shape, after the step of removing the first substrate; and a step of removing the second substrate, after the step of processing the third laminate, wherein a Young's modulus of the adhesive layer is smaller than a Young's modulus of the piezoelectric layer, wherein respective Young's moduli of the second electrode layer and the support layer are larger than the Young's modulus of the adhesive layer, and wherein the third laminate has no other piezoelectric layer except for said piezoelectric layer.