Electrophoretic displays with controlled amounts of pigment
First Claim
1. An electrophoretic medium having walls defining at least one microcavity containing an internal phase, this internal phase comprising a plurality of at least one type of electrophoretic particle suspended in a suspending fluid and capable of moving therethrough upon application of an electric field to the electrophoretic medium, the average height of the at least one microcavity differing by not more than about 5 μ
- m from the saturated particle thickness of the electrophoretic particle divided by the volume fraction of the electrophoretic particles in the internal phase.
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Abstract
An electrophoretic medium has walls defining a microcavity containing an internal phase. This internal phase comprises electrophoretic particles suspended in a suspending fluid and capable of moving therethrough upon application of an electric field to the electrophoretic medium. The average height of the microcavity differs by not more than about 5 μm from the saturated particle thickness of the electrophoretic particle divided by the volume fraction of the electrophoretic particles in the internal phase.
367 Citations
22 Claims
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1. An electrophoretic medium having walls defining at least one microcavity containing an internal phase, this internal phase comprising a plurality of at least one type of electrophoretic particle suspended in a suspending fluid and capable of moving therethrough upon application of an electric field to the electrophoretic medium, the average height of the at least one microcavity differing by not more than about 5 μ
- m from the saturated particle thickness of the electrophoretic particle divided by the volume fraction of the electrophoretic particles in the internal phase.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification