Electro-optic system configured to reduce a perceived color change

  • US 8,508,832 B2
  • Filed: 04/24/2012
  • Issued: 08/13/2013
  • Est. Priority Date: 08/09/2010
  • Status: Active Grant
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First Claim
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1. An electrochromic system comprising:

  • an electrochromic element comprising;

    a front element comprising first and second surfaces;

    a rear element comprising third and fourth surfaces, wherein said front and rear elements are sealably bonded together in a spaced-apart relationship to define a chamber, such that said second surface and said third surface face one another;

    a transparent first electrode comprising a layer of conductive material carried on said second surface;

    an electrochromic medium contained in said chamber, wherein said electrochromic medium is adapted to be in at least a high transmittance state and a low transmittance state; and

    an at least partially transmissive, partially reflective second electrode; and

    a display device in optical communication with said electrochromic element, said display device comprising;

    at least one light source; and

    said display device being configured to emit at least a first primary and a second primary, and said first and second primaries each having a color (u′


    ) when viewed through said electrochromic element in approximately said high state and a second color (u′


    ) when viewed through said electrochromic element in approximately said low transmittance state, and a difference in said first and second colors (Δ



    ) for said first and second primaries is less than approximately 0.06.

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