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Color electrophoretic displays

  • US 7,167,155 B1
  • Filed: 08/27/1998
  • Issued: 01/23/2007
  • Est. Priority Date: 07/20/1995
  • Status: Expired due to Fees
First Claim
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1. An electrophoretic display comprising:

  • at least one capsule containing a suspending fluid and at least one particle;

    a cyan-colored electrode disposed adjacent said capsule;

    a magenta-colored electrode disposed adjacent said capsule, said magenta-colored electrode spaced apart from said cyan-colored electrode;

    a yellow-colored electrode disposed adjacent said capsule, said yellow-colored electrode spaced apart from said cyan-colored electrode and said magenta-colored electrode; and

    a white electrode adjacent said capsule, said white electrode spaced apart from said cyan-colored electrode, said yellow-colored electrode, and said magenta-colored electrode;

    wherein application of a voltage potential to said cyan-colored electrode, magenta-colored electrode, and yellow-colored electrode causes said white particles to migrate within the capsule to locations adjacent said cyan-colored electrode, said magenta-colored electrode, and said yellow-colored electrode causing said capsule to appear white, and wherein application of a second voltage potential to said cyan-colored, said magenta-colored, and said yellow-colored electrode causes said white particles to migrate within said capsule to a location adjacent said white electrode causing said capsule to appear substantially black.

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