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US 7,259,744 B2Granted
Dielectrophoretic displays
AssigneeE Ink Corporation
InventorsAlexi C. Arango, Joseph M. Jacobson
Life of this patent
Estimating the term…
Abstract
A dielectrophoretic display comprises a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface; a suspending fluid contained within the cavity; a plurality of at least one type of particle suspended within the suspending fluid; and means for applying to the substrate an electric field effect effective to cause dielectrophoretic movement of the particles to the side wall of the cavity.
Claims42
A dielectrophoretic display comprising:
- a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface;
- a suspending fluid contained within the cavity;
- a plurality of a first type of particle suspended within the suspending fluid, the first type of particle having a first optical characteristic and a first electrophoretic mobility;
- a plurality of a second type of particle suspended within the suspending fluid, the second type of particle having a second optical characteristic different from the first optical characteristic and a second electrophoretic mobility different from the first electrophoretic mobility;
- a backing member disposed on the opposed side of the cavity from the viewing surface, at least part of the backing member having a third optical characteristic different from the first and second optical characteristics;
- and
- means for applying to the substrate an electric field effective to cause dielectrophoretic movement of the first and second types of particles to the side wall of the cavity.
4 more elements
A process for operating a dielectrophoretic display, the process comprising:
- providing a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface;
- a suspending fluid contained within the cavity;
- a plurality of a first type of particle suspended within the suspending fluid, the first type of particle having a first optical characteristic and a first electrophoretic mobility;
- a plurality of a second type of particle suspended within the suspending fluid, the second type of particle having a second optical characteristic different from the first optical characteristic and a second electrophoretic mobility different from the first electrophoretic mobility;
- and a backing member disposed on the opposed side of the cavity from the viewing surface, at least part of the backing member having a third optical characteristic different from the first and second optical characteristics;
- and
- applying to the substrate an electric field effective to cause dielectrophoretic movement of the first and second types of particles to the side wall of the cavity.
4 more elements
A dielectrophoretic display comprising:
- a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface;
- a suspending fluid contained within the cavity;
- a plurality of at least one type of particle suspended within the suspending fluid, the particles having a first optical characteristic;
- a backing member disposed on the opposed side of the cavity from the viewing surface, at least part of the backing member having a second optical characteristic different from the first optical characteristics;
- and
- means for applying to the substrate an electric field effective to cause dielectrophoretic movement of the particles to the side wall of the cavity.
3 more elements
A process for operating a dielectrophoretic display, the process comprising:
- providing a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface, a suspending fluid contained within the cavity;
- and a plurality of at least one type of particle suspended within the suspending fluid, the particles having a first optical characteristic;
- and a backing member disposed on the opposed side of the cavity from the viewing surface, at least part of the backing member having a second optical characteristic different from the first optical characteristic;
- and
- applying to the substrate an electric field effective to cause dielectrophoretic movement of the particles to the side wall of the cavity.
2 more elements
Dependencies are inferred from the claim text.