Ultrasonic touch panel

An ultrasonic touch panel is offered which can detect whether there is a touch, at an improved accuracy without the need to adjust the detection sensitivities of individual piezoelectric bodies separately. The piezoelectric bodies have comb-like electrodes that excite ultrasonic waves. A sealant is applied to those of the side surfaces of the piezoelectric bodies which intersect with the direction of propagation of the excited ultrasonic waves. This suppresses reflection of the ultrasonic waves, thus attenuating ultrasonic waves propagating to the intersecting side surfaces. Generation of parasitic waves which would normally be caused by reflection of ultrasonic waves is prevented.