ULTRASONIC PROBE AND ULTRASONIC DIAGNOSING DEVICE

摘要

A ultrasonic probe formed by arranging a plurality of ultrasonic vibrators each including a piezoelectric layer (2) and a pair of electrodes (7-1, 7-2) provided to sandwich this piezoelectric layer, the piezoelectric layer (2) consisting of a first piezoelectric layer (2-1) disposed on the ultrasonic wave outputting side across a common electrode (8) and a second piezoelectric layer (2-2) disposed on the opposite side, each ultrasonic vibrator having a uniform low-frequency response distribution in a minor-axis direction perpendicular to the arranging direction of the ultrasonic vibrators and having a high high-frequency response distribution at the center in the minor-axis direction, characterized in that the characteristics of the minor-axis-direction frequency and sound pressure of the first piezoelectric layer are complemented by those of the second piezoelectric layer to thereby make uniform frequency characteristics for a minor-axis-direction low frequency.