PIEZOELECTRIC ACOUSTIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric acoustic device that can easily be made thin in thickness. SOLUTION: The piezoelectric acoustic device 1 provided with a piezoelectric element 30 both sides of which an electrode film 31 is formed and a diaphragm 20 bonded with one electrode film of the piezoelectric element 30, is provided with a belt-like extraction electrode 32 adhered to the electrode film 31 of the piezoelectric element 30 by adhesive with adhesion and conductivity.