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Electrophoretic caps prepared from encapsulated electrophoretic particles

  • US 7,352,501 B2
  • Filed: 03/31/2005
  • Issued: 04/01/2008
  • Est. Priority Date: 03/31/2005
  • Status: Expired due to Fees
First Claim
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1. An article comprising:

  • a cap of electrophoretic material suspended in a dielectric fluid;

    wherein the cap of electrophoretic material includes a substance that has a glass transition temperature of about 75°

    C. or less;

    wherein the cap of electrophoretic material and dielectric fluid are encapsulated in a shell, the cap comprising a plurality of melted electrophoretic particles fused together to have a continuous surface;

    wherein a portion of the cap of electrophoretic material is proximate to a viewable portion of an inner surface of the shell when the potential of an electrode near the shell attracts the cap of electrophoretic material to the viewable portion of an inner surface of the shell.

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