Ultrasound probe, ultrasound diagnostic imaging apparatus and manufacturing method of ultrasound probe

An ultrasound probe which outputs ultrasound on a basis of a drive signal which is to be received, the probe comprising:

• a composite piezoelectric layer in which a piezoelectric material and a polymer material are arranged in a one-dimensional array or in a two-dimensional array so that an upper edge surface of the piezoelectric material and an upper edge surface of the polymer material are arranged alternately;
• an acoustic reflection layer which has an acoustic impedance higher than an acoustic impedance of the composite piezoelectric layer;
• and
• an adhesion layer which bonds the acoustic reflection layer on the composite piezoelectric layer,
• wherein the upper edge surface of the piezoelectric material and the upper edge surface of the polymer material are on a bonding surface side of the composite piezoelectric layer which is bonded to the acoustic reflection layer, and the upper edge surface of the polymer material is concaved in a direction opposite to the bonding surface side as compared to the upper edge surface of the piezoelectric material.