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AssigneeE Ink Corporation
InventorsStephen J. TELFER, Stephen BULL, Alain BOUCHARD, Craig A. HERB, Kosta LADAVAC, Ana L. LATTES, Jennifer M. MORRISON, Richard J. PAOLINI, JR., Michael Thomas REGAN, Luke M. SLOMINSKI, Lee YEZEK, Kenneth R. CROUNSE, J. Ryan KRUSE, Christopher L. HOOGEBOOM, Jason D. FEICK, David Darrell MILLER
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An electrophoretic display comprising a fluid including a first species of particles and a charge control agent disposed between first and second electrodes. When a first addressing impulse have an electrical polarity is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but having the same electrical polarity, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.
An electrophoretic display capable of rendering multiple different colors, the display comprising an electrophoretic medium comprising a fluid, a plurality of particles, and charge control agents disposed in the fluid, the display further comprising first and second electrodes disposed on opposed sides of the electrophoretic medium, wherein upon application of a first addressing impulse to the electrophoretic medium the particles move towards the first electrode, but upon application of a second addressing impulse, larger than, but of the same polarity as the first addressing impulse, the particles move towards the second electrode.
An electrophoretic medium comprising a fluid and first, second and third species of particles disposed in the fluid, the first species of particles bearing charges of one polarity, and the second and third species of particles bearing charges of the opposite polarity, such that when a first addressing impulse is applied to the electrophoretic medium, the first and third species of particles move in one direction relative to the electric field and the second species of particles move in the opposed direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but of the same polarity, is applied to the electrophoretic medium, the first species of particles move in said one direction relative to the electric field, while the second and third species of particles move in said opposed direction relative to the electric field.
An electrophoretic medium comprising a fluid, dyed a first color, and first, second and third species of particles disposed in the fluid, the first species of particles being light-scattering, and bearing charges of one polarity, while the second and third species of particles are non-light scattering, are of second and third colors respectively different from the first color and from each other, and bear charges of the opposite polarity, the characteristics of the first, second and third species of particles being such that the particle-particle interactions are less between the particles of the first species and the particles of the second species than between the particles of the first species and the particles of the third species, such that when a first addressing impulse is applied to the electrophoretic medium, the first and third species of particles move in one direction relative to the electric field and the second species of particles move in the opposed direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but of the same polarity is applied to the electrophoretic medium, the first species of particles move in said one direction relative to the electric field, while the second and third species of particles move in said opposed direction relative to the electric field, and when a third addressing impulse, larger than the second addressing impulse but of the same polarity is applied to the electrophoretic medium, the first species of particles move in said opposed direction relative to the electric field, while the second and third species of particles continue to move in said opposed direction relative to the electric field.
Dependencies are inferred from the claim text.