Multi-color electrophoretic displays and materials for making the same
First Claim
1. A method of driving a multi-color encapsulated electrophoretic display which includes at least one cavity containing at least three species of particles, the display further comprising a first electrode forming a viewing surface of the display and a second electrode on the opposed side of the at least one cavity from the first electrode, the method comprising:
- bringing all three species of particles adjacent one of the first and second electrodes; and
applying an electric field between the first and second electrodes to cause at least one species of particles to move away from said one electrode, thereby placing a desired one of the three species of particles adjacent the viewing surface.
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Abstract
Novel addressing schemes for controlling electronically addressable displays include a scheme for rear-addressing displays, which allows for in-plane switching of the display material. Other schemes include a rear-addressing scheme which uses a retroreflecting surface to enable greater viewing angle and contrast. Another scheme includes an electrode structure that facilitates manufacture and control of a color display. Another electrode structure facilitates addressing a display using an electrostatic stylus. Methods of using the disclosed electrode structures are also disclosed. Another scheme includes devices combining display materials with silicon transistor addressing structures.
183 Citations
45 Claims
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1. A method of driving a multi-color encapsulated electrophoretic display which includes at least one cavity containing at least three species of particles, the display further comprising a first electrode forming a viewing surface of the display and a second electrode on the opposed side of the at least one cavity from the first electrode, the method comprising:
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bringing all three species of particles adjacent one of the first and second electrodes; and applying an electric field between the first and second electrodes to cause at least one species of particles to move away from said one electrode, thereby placing a desired one of the three species of particles adjacent the viewing surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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- 24. A multi-color encapsulated electrophoretic display which includes at least one cavity containing at least three species of particles, wherein the multi-color display predominately displays one of the species of particles in response to a sequence of electrical pulses controlled in both time and direction of the electric field.
Specification