Abstract: An infrared touch screen device capable of smoothly sensing contact positions of a plurality of touch points and sensing multi-touch points, when a plurality of touch points are produced, are provided. The infrared touch screen comprises a screen provided with a display panel on which an image is projected and a reinforced glass plate formed on a front surface of the display panel, an reinforced glass plate formed on a front surface of the screen to protect the screen and on which a touch is made, an optical scanner formed on one side of the screen and scanning the screen with the infrared, a light guide bar formed on a border of the reinforced glass plate, a light receiving portion provided on a distal end of the light guide bar, and a position detector for detecting the touch position with a scanning angle of the optical scanner.

Abstract: An infrared touch screen device capable of smoothly sensing contact positions of a plurality of touch points and sensing multi-touch points, when a plurality of touch points are produced, are provided. The infrared touch screen comprises a screen provided with a display panel on which an image is projected and a reinforced glass plate formed on a front surface of the display panel, an reinforced glass plate formed on a front surface of the screen to protect the screen and on which a touch is made, an optical scanner formed on one side of the screen and scanning the screen with the infrared, a light guide bar formed on a border of the reinforced glass plate, a light receiving portion provided on a distal end of the light guide bar, and a position detector for detecting the touch position with a scanning angle of the optical scanner.