Patent ID: 8339373

Claim:
A touch panel display comprising: a display panel having a touch surface; a backlight module comprising a light guide plate and a light source module, the light guide plate comprising a light emitting surface facing the display panel, a side surface directly connected to and adjacent to the light emitting surface, and a bottom surface opposite to the light emitting surface, the light guide plate defining at least one through hole extending through the light emitting surface and the bottom surface, the light source module comprising at least one first light source and at least one second light source, the at least one first light source configured for emitting visible light, the at least one second light source configured for emitting infrared light, the at least one first light source and the at least one second light source only positioned on a same side of the side surface, and aligned with the side surface; the light guide plate capable of transmitting the visible light and the infrared light through to the display panel; at least one infrared camera partially extending into the at least one through hole, wherein a portion of the at least one infrared camera that partially extends into the through hole is smaller than a portion of the at least one infrared camera that does not extend into the through hole, and the at least one infrared camera configured for detecting any of the infrared light that is reflected from an object in contact with or adjacent the touch surface of the display panel, forming an image based on the detected infrared light, and outputting the image; and a processor configured for receiving the image from the at least one infrared camera, and processing the image to obtain a position of the object at the touch surface.