LIGHT SENSING ASSEMBLY AND INTERACTIVE DISPLAY DEVICE HAVING THE SAME

摘要

PURPOSE: Light sensing assembly and an interactive display device used in the same is provided to arrange stripe sensor array to a side of a wedge type of light guide plate, thereby performing touch recognition without a structure change of the display panel. CONSTITUTION: A white LED(130) is arranged to a side of a first light guide plate, and irradiates white light for a display. Infrared light emitting diodes(140,142) irradiate infrared light for touch recognition. A second light guide plate is arranged under the first light guide plate, and guides a route of the infrared light inputted according to touch operation. A first sensor array(160) is arranged in a side portion of the second light guide plate. The first sensor array senses the infrared light guided by the second light guide plate.