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Controlling polarization for liquid crystal displays

  • US 20070008471A1
  • Filed: 05/23/2006
  • Published: 01/11/2007
  • Est. Priority Date: 05/23/2005
  • Status: Abandoned Application
First Claim
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1. A polarizing liquid crystal display protection panel having a protection panel rear surface and a protection panel front surface through which light from a display module may pass and exit to a viewer, said protection panel comprising:

  • a retarder layer RB having a front surface, a rear surface, a slow axis RBX, and a retardance of about (2m+1)λ

    /4, where m is an integer and λ

    is between about 400 nm to 700 nm;

    a linear polarizer PB forward said retarder layer RB and closer to the viewer, said linear polarizer PB having a linear polarization axis PBX that forms an angle θ

    2 of about 45°

    or −

    45°

    to said slow axis RBX of said retarder layer RB; and

    a transparent supportive panel, said transparent supportive panel comprises a sheet of glass substrate, a sheet of plastic substrate, or a touch input device, wherein at least one of said panel front and rear surfaces comprises an anti-reflection treatment.

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