Patent ID: 8493365
Filing Date: 2013-07-23
Classification: G06F

Abstract:
1. An optical touch display apparatus, comprising: at least one visible light emitting device, capable of emitting a visible beam; a light distribution adjustment device, disposed beside the visible light emitting device in a transmission path of the visible beam; a non-visible light guide module, comprising: at least one non-visible light emitting device, disposed beside the side surface, and capable of emitting a non-visible beam, wherein the non-visible beam is capable of entering the light guide unit through the side surface, and the dichroic unit is capable of letting the visible beam pass through and reflecting the non-visible beam from the side surface to the first surface; a display panel, disposed on the light guide unit, wherein a sensing space is located in front of the display panel, the display panel is disposed between the light guide unit and the sensing space, the light guide unit is disposed between the display panel and the dichroic unit, and the non-visible beam is capable of being transmitted to the sensing space through the first surface; and at least an optical detector, disposed outside the display panel, wherein a touch object reflects a portion of the non-visible beam when the touch object enters the sensing space, and the optical detector is disposed in a transmission path of the portion of the non-visible beam reflected by the touch object.