MIDDLE-LARGE RANGE OF INFRARED TOUCH SCREEN SYSTEM FOR ENHANCING THE MEANINGFUL TOUCH SIGNAL AND SOLVING THE OCCLUSION INDUCED OVERLAID MULTI TOUCHES

摘要

The middle- or large-sized infrared touch screen system for reducing significant signal strength enhancement and signal blurring due to redundant touch according to an embodiment of the present invention includes a touch optical plate formed on the upper part of the display unit, A plurality of infrared light emitting elements and a plurality of infrared light receiving elements formed on the outer surface of the touch optical plate so as to have a phase plane and a plurality of infrared light receiving elements arranged on the outer side of the touch optical plate, And at least two IR cameras that image the change of the IR camera.