ULTRASONIC VIBRATION DEVICE, ULTRASONIC VIBRATION DEVICE MANUFACTURING METHOD, AND ULTRASONIC MEDICAL EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic vibration device that has heat resistance and prevents a short circuit between electrodes by preventing surface discharge between the electrodes in a construct made without lead.;SOLUTION: An ultrasonic vibration device 2 comprises: a plurality of stacked piezoelectric single crystal plates 61; a plurality of electrodes 62, 63 having an area smaller than a front area and rear area of a piezoelectric single crystal plate 61 and placed between the plurality of piezoelectric single crystal plates 61; electric conduction parts 65, 66 for electrically connecting a positive electrode with other positive electrodes, and a negative electrode with other negative electrodes of the plurality of electrode plates 62, 63; on front and rear surfaces of the piezoelectric single crystal plate 61, flat region 61a where the electrode plates 62, 63 are not provided from an outer peripheral edge toward a center O by a prescribed length of L.;COPYRIGHT: (C)2014,JPO&INPIT