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 26 inch IR touch frame which is available in both standard and custom industrail lcd displays for transportation, Toponetech’s projected capacitive touch screens are form, fit or function replacements for 3M™ and Elo™ touch sensors.
