Transmissive E-paper display
AssigneeHoneywell International Inc.
InventorAndrei Cernasov
Life of this patent
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Abstract
In accordance with the invention, there are systems for electronic paper, apparatus for electrophoretic display, and methods of making an electrophoretic display. The system for electronic paper can comprise a light transmissive electret substrate comprising a gradient of charges and a plurality of capsules disposed in the light transmissive electret substrate, wherein each of the plurality of capsules can comprise a plurality of charged pigments with a polarity opposite to that of the charges in the light transmissive electret substrate.
Claims22
A system for electronic paper, the system comprising:
- a light transmissive electret substrate comprising a gradient of charges;
- and
- a plurality of capsules disposed in the light transmissive electret substrate, wherein each of the plurality of capsules comprises a plurality of charged pigments with a polarity opposite to that of the charges in the light transmissive electret substrate.
An apparatus for an electrophoretic display, the apparatus comprising:
- a light transmissive electret substrate comprising a gradient of charges;
- and
- a plurality of capsules disposed in the light transmissive electret substrate, wherein each of the plurality of capsules comprises a plurality of charged pigments with a polarity opposite to that of the charges in the light transmissive electret substrate.
A method of making an electrophoretic display, the method comprising:
- providing a light transmissive electret substrate comprising a gradient of charges;
- providing a plurality of capsules disposed in the light transmissive electret substrate, wherein each of the plurality of capsules comprises a plurality of charged pigments with a polarity opposite to that of the charges in the light transmissive electret substrate;
- providing a plurality of first light transmissive electrodes interfaced with a first side of the light transmissive electret substrate, wherein the first light transmissive electrodes are spatially separated from one another;
- providing a plurality of second light transmissive electrodes interfaced with a second side of the light transmissive electret substrate, wherein the second light transmissive electrodes are spatially separated from one another;
- and
- providing a power supply to apply a voltage to at least one of each of the first and second light transmissive electrodes;
- wherein in the absence of the applied voltage to at least one of each of the first and the second light transmissive electrodes, the plurality of charged pigments move in response to the electric field within the capsule due to the gradient of charges in the light transmissive electret substrate, thereby rendering the electrophoretic display opaque.
Dependencies are inferred from the claim text.