A phased array ultrasound appartus, a system for user interaction and a method for forming a combined ultrasonic wave based on a phased array ultrasound apparatus. Interuniversitair Micro-Electronica Centrum vzw
A phased array ultrasound apparatus comprises an array of ultrasound transducer elements (110); a plurality of first electrodes (132) and a plurality of second electrodes (134), such that each transducer element (110) is associated with one first (132) and one second electrode (134); wherein each transducer element (110) comprises a layer (118) of piezoelectric material between the first (132) and the second electrode (134) to induce emitting of an ultrasonic wave based on control signals, wherein control signals are shared by the transducer elements (110); wherein a phase of an emitted ...