.................................................................................................. HOME < Product < Touch Screen < Construction   Pure glass touchscreens for superior image clarity durable, scratch resistant glass surface Finger, gloved hand, soft stylus activation Fast sensitive touch response Flat, spherical, cylinderical touchscreen. The touchscreen controller sends a five-megaherz electrical signal to the transmitting transducer, which converts the signal into ultrasonic waves within the glass. This is a device driver and control program to work touchscrren.