Patent ID: 8661634

Claim:
A method for manufacturing a flexible piezoelectric device, comprising: laminating a piezoelectric device layer on a sacrificial substrate; treating the piezoelectric device layer on the sacrificial substrate at high temperature; patterning the laminated piezoelectric device layer to form a piezoelectric device; etching the sacrificial substrate to separate the piezoelectric device from the sacrificial substrate; and contacting the piezoelectric device with a transfer layer and transferring the piezoelectric device to a flexible substrate, wherein the piezoelectric device is formed at a piezoelectric device region with the sacrificial substrate nearby exposed, and wherein the sacrificial substrate is a single-crystal silicon substrate having (1, 1, 1) crystal structure, said etching is anisotropic etching in the (1, 1, 0) direction, and the sacrificial substrate below the piezoelectric device layer is etched by the anisotropic etching.