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 12.1(4:3) inch IR touch frame which is available in both standard and custom open frame toushscreen industrial monitor, Toponetech’s projected capacitive touch screens are form, fit or function replacements for 3M™ and Elo™ touch sensors.