Ultrasonic transducer device

Abstract

An ultrasonic transducer device includes a shock absorption layer, an acoustic lens, an acoustic resistance matching layer, a piezoelectric material layer and a first electrode layer. The acoustic resistance matching layer is disposed between the shock absorption layer and the acoustic lens. The piezoelectric material layer is disposed between the shock absorption layer and the acoustic resistance matching layer, and includes a first piezoelectric unit and a second piezoelectric unit and a third piezoelectric unit. A vertical size of the first piezoelectric unit located in the middle is smaller than vertical sizes of the second piezoelectric unit and the third piezoelectric unit located on the sides. The first electrode layer is disposed on a signal side of the piezoelectric material layer, and has electrode terminals bent to each other and corresponding to the signal side of the first piezoelectric unit and the second piezoelectric unit and the third piezoelectric unit.

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