Patent ID: 8297765

Claim:
A microstructural polarized light-guide device, comprising: a unpolarized light source module, further comprising: a light-guide plate, which is PMMA (polymethylmethacrylate) with the characteristic of high transparency, the surface of the light-guide plate has a plurality of extraction patterns; and a light source, beside the light-guide plate; a subwavelength polarization beam splitter structure, which is a nano-scale structure and is disposed on a surface opposite to the surface with the plurality of extraction patterns of the light-guide plate, further comprising: a dielectric nanograting layer, which is a strip-shaped structure formed on a surface opposite to the surface with the plurality of extraction patterns of the light-guide plate, in addition, being integrated with the light-guide plate; and a metallic nanograting layer, which is a strip-shaped structure formed on the dielectric nanograting layer and vertically stacked with the dielectric nanograting layer; and a polarization conversion module, which is disposed on the surface with the plurality of extraction patterns of the light-guide plate.