Patent ID: 8493361

Claim:
A touch type display device comprising: a flat panel display module; a plurality of infrared light emitting units disposed on a portion or on the entirety of the edge of the flat panel display module; an infrared camera disposed on at least two corners of the flat panel display module, the infrared camera including a sensor for sensing infrared light from the infrared light emitting unit and a lens; and a band pass filter allowing light of a certain wavelength band in light emitted from the infrared light emitting units to pass therethrough, wherein the infrared light emitting units are infrared light emitting diodes emitting infrared light of which the center of a wavelength distribution is 870 nm, and the band pass filter allows a wavelength band ranging from 860 nm to 880 nm to pass therethrough, and wherein the band pass filter is disposed at the front face of the lens so that the infrared light filtered by the band pass filter is reached to the sensor through the lens.