Some uses of microencapsulation for electric paper
First Claim
Patent Images
1. A display medium comprising:
- a plurality of bichromal balls, each having two hemispheric surfaces, one surface differing from the other in both color and electrical characteristicsa layer of liquid surrounding each ball,a skin of a first compound surrounding the layer of liquid to form a microcapsule, anda substrate of a second compound within which all of said microcapsules are encapsulated.
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Abstract
Bichromal balls have two hemispheres, typically one black and one white, each having different electrical properties. Each ball is enclosed within a spherical shell and then a space between the ball and shell is filled with a liquid to form a microsphere so that the ball is free to rotate in response to an electrical field. The microspheres can then be mixed into a substrate which can be formed into sheets or can be applied to any kind of surface. The result is a film which can form an image from an applied electrical field.
352 Citations
9 Claims
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1. A display medium comprising:
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a plurality of bichromal balls, each having two hemispheric surfaces, one surface differing from the other in both color and electrical characteristics a layer of liquid surrounding each ball, a skin of a first compound surrounding the layer of liquid to form a microcapsule, and a substrate of a second compound within which all of said microcapsules are encapsulated. - View Dependent Claims (2, 3)
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4. A display medium comprising:
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a plurality of bichromal balls, each having two hemispheric surfaces, one surface differing from the other in both color and electrical characteristics a layer of liquid surrounding each ball, a skin of a first compound surrounding the layer of liquid, and a substrate of a second compound within which all of said microcapsules are encapsulated, which substrate is adapted to be bonded to a surface. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification