Patent ID: 8450904
Filing Date: 2013-05-28
Classification: H03H,Y10T

Abstract:
1. A piezoelectric device comprising: a support; a piezoelectric thin-film including opposed main surfaces and being supported by the support on a support side of the piezoelectric thin-film; IDT electrodes located on the support side of the piezoelectric thin-film to define an IDT electrode region; and a space located over the IDT electrode region of the piezoelectric thin-film that is located on the support side such that the IDT electrodes are not in contact with the support; wherein the piezoelectric thin-film is configured such that vibration displacements are generated on both of the opposed main surfaces of the piezoelectric thin-film when a charge is applied to the IDT electrodes; and the IDT electrodes are located only on the support side of the piezoelectric thin-film such that no IDT electrodes are disposed on a side of the piezoelectric thin-film opposite to the support side.