Patent ID: 9390739
Filing Date: 2016-07-12
CPC Classification: G11B,H01L,H02N

Claim Text:
1. A piezoelectric microactuator comprising: a piezoelectric material; opposite first and second faces of the piezoelectric microactuator; and a restraining layer having a Young's modulus of greater than 50 GPa bonded to the second face of the piezoelectric microactuator by an adhesive without any additional layer therebetween having a stiffness that is substantially less than the stiffness of the restraining layer, the restraining layer altering the bending behavior of the piezoelectric microactuator so as to increase the effective stroke length of the piezoelectric microactuator compared to what the stroke length of the piezoelectric microactuator would be in the absence of the restraining layer.