Patent ID: 8125582

Claim:
A three-dimensional image display device, comprising: a polarized light module, for outputting a polarized light; a non-vertical polarized light barrier grating unit, disposed in a light path of the polarized light to modulate the polarized light into a modulated polarized light in interlaced lines for outputting, wherein the non-vertical polarized light barrier grating unit comprises: a micro phase retardation unit, having a non-vertical first phase modulation material and a second phase modulation material disposed in interlace, for respectively modulating a phase of the polarized light to output a plurality of modulated light; a polarizing film, for receiving the modulated light from the micro phase retardation unit to output the modulated polarized light; and an even phase retardation unit, having an optical axis direction substantially perpendicular to an optical axis direction of the micro phase retardation unit, and disposed between the polarized light module and the polarizing film; and an image display unit, for receiving the modulated polarized light from the non-vertical polarized light barrier grating unit, so as to output two or more images with parallax.