Patent ID: 7286196

Claim:
An electro-optical display system comprising: a rear reflective heterogeneous polarizer having a first and a second region, wherein said first region transmits a first polarization state and reflects a second polarization state and said second region transmits the second polarization state and reflects the first polarization state; a front heterogeneous polarizer having a third and a fourth region, wherein said third region is substantially aligned with and approximately the same size and shape as said first region and said fourth region is substantially aligned with and approximately the same size and shape as said second region; and a light modulation unit coupled to said front and rear polarizers, wherein said modulation unit modifies the polarization state of transmitted light, wherein said light modulation unit is a liquid crystal display layer; said layer having fifth and sixth regions that are oriented relative to the first and second regions of said rear polarizer and the third and fourth regions of said front polarizer; wherein said fifth region is substantially aligned with and approximately the same shape and size as said first region and said third region and wherein said sixth region is substantially aligned with and approximately the same shape and size as said second region and said fourth region.