Patent ID: 8860694

Claim:
A light sensing assembly comprising: a first light guide plate; a light-emitting diode part at a side portion of the first light guide plate, wherein the light-emitting diode part emits white lights and the first light guide plate guides a path of the white lights to a display panel which displays an image by using the white lights; an infrared light-emitting diode part which emits infrared lights of a detected touch; a second light guide plate below the first light guide plate, wherein the second light guide plate guides a path of the infrared lights of the detected touch which are inputted in accordance with a touch operation; a third light guide plate below the first light guide plate and parallel with the second light guide plate, wherein the third light guide plate guides the path of the infrared lights of the detected touch inputted in accordance with the touch operation; and a first sensor array at a side portion of the second light guide plate, wherein the first sensor array senses the infrared lights which are guided by the second light guide plate; a second sensor array at a side portion of the third light guide plate, wherein the second sensor array senses the infrared lights which are guided by the third light guide plate, wherein the first light guide plate is between the display panel, and the second and third light guide plates.