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Light control film

  • US 9,063,284 B2
  • Filed: 06/16/2010
  • Issued: 06/23/2015
  • Est. Priority Date: 06/18/2009
  • Status: Active Grant
First Claim
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1. A light control film, comprising:

  • a light input surface and a light output surface opposite the light input surface; and

    alternating transmissive and non-transmissive regions disposed between the light input surface and the light output surface, each transmissive region having a width, W′

    , at its narrowest region;

    wherein the average pitch of successive transmissive regions, P, is 0.040 mm or less; and

    wherein W′

    /P>

    0.75; and

    wherein light incident on the light input surface exits the light output surface having a maximum relative brightness ratio (RBR) in the major viewing axis direction of 65 or greater and an effective polar viewing angle (EPVA) of 45°

    or less.

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