A Haptic Feedback Touch Panel

We present a haptic feedback touch panel. This actuator is capable of generating haptic stimulations, and thus can be used as a vibrotactile display. It is composed of two layers, a touch panel and a glass panel, each coated with ITO electrode. Unlike conventional vibration motors, it does not require an additional mass. The application of voltage induces electrostatic forces and consequently creates vibration. Through voltage control, vibration patterns of varying intensity and frequency can be generated. The demonstrated actuator exhibits stimulations of fast response time, and strong vibration acceleration of 5 G and normal displacement of 100 μm.