ULTRASONIC PROBE, ULTRASONIC IMAGE DIAGNOSTIC APPARATUS, AND METHOD FOR MANUFACTURING ULTRASONIC PROBE

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic probe which is excellent in sensitivity and bandwidth expansion and is equipped with a composite piezoelectric layer high in durability and stability, an ultrasonic image diagnostic apparatus, and a method for manufacturing the ultrasonic probe.SOLUTION: An ultrasonic probe for outputting ultrasound on the basis of a received driving signal includes: a composite piezoelectric layer where a piezoelectric material and a polymer material are arranged by turns in a one-dimensional or two-dimensional array shape; an acoustic reflection layer having higher acoustic impedance than acoustic impedance of the composite piezoelectric layer; and an adhesion layer for joining the composite piezoelectric layer and the acoustic reflection layer. Portions formed by the polymer material in a joint surface between the composite piezoelectric layer and the acoustic reflection layer is formed into a recess on the side opposite the acoustic reflection layer side with respect to a portion formed by the piezoelectric material.