Patent ID: 7227568

Claim:
An apparatus for producing three-dimensional images including a Dual Polarizing Filter comprising: a first substrate and second substrate, facing and spaced apart from each other, a dual polarizing component for selectively changing the polarizing status of polarized light passing through portions of the first and second substrates, and a polarizing film attached on outside surface of first substrate, wherein the polarizing film attached on outside surface of first substrate polarizes light transmitted into first substrate, wherein the dual polarizing component selectively changes the polarization status of polarized light passing through the apparatus to produce first and second image portions having first and second polarization directions, the first and second image portions comprising a three-dimensional image, and wherein the dual polarizing component includes a common electrode layer formed on a surface of the first substrate, facing the second substrate, a unit control layer formed on a surface of the second substrate, facing the first substrate, and a liquid crystal sandwich structure layer formed between the unit polarizing control layer and the common electrode layer.