Piezoelectric element and electroacoustic transducer

Abstract

Provided are a piezoelectric element and an electroacoustic transducer, which can be made thinner while ensuring piezoelectric characteristics in a piezoelectric element. The piezoelectric element includes a common electrode layer, a first piezoelectric layer which consists of a polymer-based piezoelectric composite material containing piezoelectric particles in a matrix containing a polymer material and is provided on one surface of the common electrode layer, a first electrode layer which is provided on a surface of the first piezoelectric layer on a side opposite to the common electrode layer, a first protective layer which is provided on a surface of the first electrode layer on a side opposite to the first piezoelectric layer, a second piezoelectric layer which consists of a polymer-based piezoelectric composite material containing piezoelectric particles in a matrix containing a polymer material and is provided on the other surface of the common electrode layer, a second electrode layer which is provided on a surface of the second piezoelectric layer on a side opposite to the common electrode layer, and a second protective layer which is provided on a surface of the second electrode layer on a side opposite to the second piezoelectric layer.

Dependencies are inferred from the claim text.