A matrix of Infrared(IR)LEDs and photo diodes are used to create a two dimensional grid over the display to detect where infrared light is blocked and thus where touch points are. There is 19.5 inch IR touch frame which is available in both standard and custom industrial touch display for roulette machine, Toponetech’s projected capacitive touch screens are form, fit or function replacements for 3M™ and Elo™ touch sensors.
