| 摘要 |
<p>The present invention relates to an infrared touch screen device, and more particularly, it relates to an infrared touch screen device capable of smoothly sensing the contact positions of a plurality of touch points and sensing multi-touch points when a plurality of touch points are produced. For this purpose, the infrared touch screen comprises a screen provided with a display panel on which image is projected and a reinforced glass plate formed on a front surface of the display panel and protects the display panel and to which the touch is made, 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 and reflecting a part of the infrared which is projected from the optical scanner and passes through the reinforced glass plate, and guiding the rest non-reflected infrared incident inside the reinforced glass plate and transferring to one end thereof, a light receiving portion provided on a distal end of the light guide bar and receiving the infrared which is transferred through the light guide bar, and a position detector for detecting the touch position with a scanning angle of the optical scanner when the amount of the light received in the light receiving portion is a little wherein the infrared reflected from the light guide bar in incident to other light guide bars which are formed, corresponding to the light guide bar reflecting the infrared.</p> |
