Electrostatically addressable electrophoretic display
AssigneeE Ink Corporation
InventorsJonathan D. Albert, Barrett Comiskey
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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.
Claims14
An electrostatically addressable display, comprising:
- (a) a substrate;
- (b) an encapsulated electrophoretic display medium disposed adjacent said substrate, said electrophoretic display medium comprising a plurality of cavities dispersed in a polymeric matrix, wherein at least one of said plurality of cavities contains an electrophoretic contrast media phase that includes at least one particle and a suspending fluid;
- and
- (c) a movable electrode,
- wherein application of electrostatic charge by said movable electrode to said electrophoretic display medium modulates an optical property of said electrophoretic display medium.
A method of addressing an electrostatically addressable display, comprising:
- providing an electrostatically addressable display, comprising:
- a substrate,
- an electrophoretic display medium disposed adjacent said substrate, said electrophoretic display medium comprising a plurality of cavities dispersed in a polymeric matrix, wherein at least one of said plurality of cavities contains an electrophoretic contrast media phase that includes at least one particle and a suspending fluid, and
- a movable electrode;
- and
- applying an electrostatic charge from said movable electrode to said electrophoretic display medium to modulate an optical property of said electrophoretic display medium.
Dependencies are inferred from the claim text.