Patent ID: 8120239

Claim:
An information display device comprising: an underlying excitation source that emits a first light having a first wavelength, the first light having a first arrangement varying in time, pattern or both; a down converting layer disposed over the underlying excitation source and comprising: approximately a first one-third (⅓) of pixels have a population of a first infrared wavelength emitting quantum dots that absorb at least a portion of the first light; approximately a second one-third (⅓) of pixels have a second infrared wavelength emitting quantum dots that absorb at least a portion of the first light; and approximately a third one-third (⅓) of pixels have no quantum dots that are transparent to the first light; and a long pass optical filter layer disposed over the first and second infrared wavelength emitting pixels that absorbs or reflects at least a portion of residual first light that has been transmitted through the down converting layer.