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AssigneeE Ink Corporation
InventorsLan Cao, Charles Howie Honeyman, Kimberly L. Houde, Andrew L. Loxley, David D. Miller, Richard J. Paolini, Jr., Tibyron Quinn, Michael L. Steiner, Thomas H. Whitesides, Libing Zhang
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An encapsulation material, intended for use in encapsulated electrophoretic displays, comprises the coacervation product of a polyanionic polymer having a vinyl main chain and a plurality of anionic groups bonded to the main chain, with a cationic or zwitterionic water-soluble polymer capable of forming an immiscible second phase on contact with the polyanionic polymer.
An encapsulation material comprising the coacervation product of a polyanionic polymer having a vinyl main chain and a plurality of anionic groups bonded to the main chain, with a cationic or zwitterionic water-soluble polymer which forms an immiscible second phase on contact with the polyanionic polymer.
A capsule comprising a capsule wall and an internal phase encapsulated by the capsule wall, the internal phase comprising a suspending fluid and a plurality of electrically charged particles suspended in the suspending fluid and capable of moving therethrough upon application of an electric field to the capsule, the capsule wall being formed of a material which is swellable by the suspending fluid, the internal phase comprising a hydrocarbon and the capsule wall material comprising any one or more-of poly(dimethyl siloxane), poly (trifluorobutyl methyl siloxane), poly(vinyl chloride), poly(butadiene), a polyacrylate, and a polymethacrylate.
Dependencies are inferred from the claim text.