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Subtractive color twisting ball display

  • US 5,767,826 A
  • Filed: 12/15/1995
  • Issued: 06/16/1998
  • Est. Priority Date: 12/15/1995
  • Status: Expired due to Term
First Claim
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1. A material comprising:

  • a substrate comprising a plurality of layers, each layer being a nearest neighboring layer with respect to at least one other layer of the plurality and no more than two other layers of the plurality, the layers including first, second, and third layers;

    a first plurality of spheroidal balls disposed in the first layer, each ball of the first plurality having at least two component regions including a component region having an achromatic color and a component region having a first chromatic color;

    a second plurality of spheroidal balls disposed in the second layer, each ball of the second plurality having at least two component regions including a component region having an achromatic color and a component region having a second chromatic color;

    a third plurality of spheroidal balls being disposed in the third layer, each ball of the third plurality having at least two component regions including a component region having an achromatic color and a component region having a third chromatic color;

    each ball of each of the first, second, and third pluralities having an anisotropy for providing an electrical dipole moment, the electrical dipole moment rendering the ball electrically responsive such that when the ball is rotatably disposed in a nonoscillating electric field while the electrical dipole moment of the ball is provided, the ball tends to rotate to an orientation in which the electrical dipole moment aligns with the field.

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