Electro-acoustic transducer

An electro-acoustic transducer includes a base and at least a vibration portion. The vibration portion includes a piezoelectric transducer layer and is connected to the base. The piezoelectric transducer layer includes an upper electrode layer and a piezoelectric material layer. The piezoelectric material layer has a first zone and a second zone, at least a part of the upper electrode layer is disposed on the first zone, and the piezoelectric material layer has a plurality of first holes at the second zone. The piezoelectric transducer layer is adapted to receive electrical signal to deform, such that the vibration portion is driven to vibrate and generate corresponding acoustic wave. The vibration portion is adapted to receive acoustic wave to vibrate, such that the piezoelectric transducer layer is driven to deform and generate corresponding electrical signal.