Patent ID: 8018642
Filing Date: 2011-09-13
Classification: G02F

Abstract:
1. An electro-optical display element comprising: a first electrode; a second electrode opposed to the first electrode; a dielectric layer, formed on at least one of the first or the second electrodes, that is patterned to create defined recessed regions on the first or the second electrodes; a fluid with colorant particles that is contained between the first and second electrodes; wherein a voltage applied to the first and second electrodes controls movement of the colorant particles such that a first voltage results in a first optical state by collecting colorant particles near a defined region and a second voltage results in a second optical state by spreading colorant particles into a viewable area of the display element, wherein the total area of the defined regions of the first or second electrodes is less than 50 percent of the area of the display element such that optical contrast is provided between the first optical state and second optical state.