Electrophoretic displays, display fluids for use therein, and methods of displaying images
AssigneeXerox Corporation
InventorsPinyen Lin, David H. Pan, Chieh-Min Cheng, Adam Bush
Life of this patent
Estimating the term…
Abstract
An electrophoretic display liquid composition for use in an electrophoretic display device that has a multiplicity of individual reservoirs, each containing the display liquid of at least two sets of particles dispersed in a transparent liquid system, the at least two sets of particles exhibiting different, contrasting color and different charging properties from each other, and at least one of the sets of particles containing flow aid particles as additives upon an external surface of the particles. Preferred flow aid additives include silica and titania particles.
Claims19
An electrophoretic display device comprising a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, wherein the electrophoretic display fluid comprises at least two sets of particles dispersed in a transparent liquid system, the at least two sets of particles exhibiting different, contrasting color and different charging properties from each other, and wherein at least one of the sets of particles contain flow aid particles as additives upon an external surface of the particles, wherein the flow aid particles are present in an amount of from about 0.1% to about 15% by weight of the particles.
An electrophoretic display device comprising a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, wherein the electrophoretic display fluid comprises at least two sets of particles dispersed in a transparent liquid system, the at least two sets of particles exhibiting different, contrasting color, wherein at least one of the sets of particles are magnetic particles while the other set of particles are non-magnetic particles, and wherein at least one of the sets of particles contain flow aid particles as additives upon an external surface of the particles.
An electrophoretic display device comprising a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, wherein the electrophoretic display fluid comprises at least two sets of particles dispersed in a transparent liquid system, the at least two sets of particles exhibiting different, contrasting color and different charging properties from each other, wherein at least one of the sets of particles are hollow polymer particles, and wherein at least one of the sets of particles contain flow aid particles as additives upon an external surface of the particles, wherein the flow aid particles are present in an amount of from about 0.1% to about 15% by weight of the particles.
An electrophoretic display device comprising a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, wherein the electrophoretic display fluid comprises one set of particles dispersed in a colored liquid system, the particles and the liquid exhibiting different, contrasting color and different charging properties from each other, wherein the set of particles are pigmented particles, and wherein the set of particles contain flow aid particles as additives upon an external surface of the particles, wherein the flow aid particles are present in an amount of from about 0.1% to about 15% by weight of the particles.
Dependencies are inferred from the claim text.