Transparent surface acoustic wave tactile display

We have already proposed a novel method to provide human tactile sensation using surface acoustic wave (SAW). A pulse modulated driving voltage excites temporal distribution of standing SAW. The distribution generates friction shift on the surface of a SAW substrate. When the surface with the burst SAW is explored, the friction shift can be perceived as tactile sensation at mechanoreceptors in the finger skin. Controlling the burst frequency according to measured rubbing motion, reality of the displayed sensation can be enhanced. In this paper, we proposed a transparent tactile display. An experimental apparatus was fabricated on trial and controlled by using captured images. The apparatus demonstrated potentiality of the tactile display for various applications.