Feel through window: simultaneous geometry and texture display based on lateral force

Touching through a screen to a displayed object has been one of a goal of human interface. Several researchers employ vibrations in order to display texture information. However no systems realize to display geometrical shapes and textures. In this research we propose a method that allows the user to feel both large bump and precise textures simultaneously through a touchscreen. Our method employs lateral force and high-frequency (around 1-10kHz) direction-controlled vibration. Vibration, normal to moving direction of finger enables independent display between geometrical and texture information. The technology allows not only geometrical shapes but also textures to be felt.