Patent ID: 8009239

Claim:
A stereoscopic display device comprising: an inner polarizer having a plurality of alternately arranged first and second polarization regions, said first polarization regions having a polarization angle of α+90 degrees, said second polarization regions having a polarization angle of α degrees; an outer polarizer having a plurality of alternately arranged third polarization regions and fourth polarization regions, said third polarization regions corresponding in position to said first polarization regions of said inner polarizer and having a polarization angle of α degrees, said fourth polarization regions corresponding in position to said second polarization regions of said inner polarizer and having a polarization angle of α+90 degrees; and a display substrate panel interposed between said inner and outer polarizers, a light beam portion that has a polarization angle of α+90 degrees after passing through said first polarization regions of said inner polarizer passing through said display substrate panel and further passing through said third polarization regions of said outer polarizer as α-degree polarized light, a light beam portion that has a polarization angle of α degrees after passing through said second polarization regions of said inner polarizer passing through said display substrate panel and further passing through said fourth polarization regions of said outer polarizer as (α+90)-degree polarized light.