PIEZOELECTRIC DEVICE, ULTRASONIC PROBE AND MANUFACTURING METHOD OF PIEZOELECTRIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric device capable of efficiently and largely deforming a membrane, an ultrasonic probe, and a manufacturing method of a piezoelectric device.

SOLUTION: An ultrasonic transmission/reception part 5 as a piezoelectric device in an ultrasonic probe of the present invention includes a circular membrane 6 having a laminated thin plate-like piezoelectric member 62, and electrodes. The electrodes include two or more sets of a pair of first electrodes 63 and 65 and a second electrode 64 provided on the piezoelectric member 62 so as to generate stress opposite to each other accompanying application of voltage respectively to a first area 68 and a second area 69 of the piezoelectric member 62.

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