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Dual panel display with cross BEF collimator and polarization-preserving diffuser

  • US 9,329,430 B2
  • Filed: 04/25/2012
  • Issued: 05/03/2016
  • Est. Priority Date: 04/28/2011
  • Status: Active Grant
First Claim
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1. A dual panel display, comprising:

  • an image-generating panel;

    at least one contrast-enhancing panel;

    a backlight, positioned such that light from the backlight illuminates the the contrast-enhancing panel, and light transmitted through the contrast-enhancing panel illuminates the image-generating panel;

    a controller, the controller receiving input image data and sending control signals to the backlight to emit a low resolution version of the input image data;

    a polarization-preserving diffuser between the contrast-enhancing panel and the image-generating panel, said polarization-preserving diffuser comprising a holographic diffuser; and

    a cross BEF collimator between the backlight and the contrast-enhancing panel;

    a reflective polarizer between the backlight and the contrast-enhancing panel, wherein the backlight, the cross BEF collimator, the reflective polarizer, the contrast-enhancing panel, the polarization-preserving diffuser and the image-generating panel are arranged in this order.

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