Electroosmotic display device

A black-matrix-type electroosmotic display (EOD) device is described. It makes use of a transparent porous substance with fine dot-shaped depressions on its surface and whose pores are filled with a transparent liquid with a high electroosmotic mobility. The device is manufactured using an embossing process and conventional printing techniques. The principle of operation involves electroosmotic movement to control the wetting of the depression's sloped surfaces on the porous substance. Characteristics of the EOD device are presented and a multicolor experimental numerical display is described. The EOD device has a relatively fast response time and low power consumption (less than 10/sup 2/ mu W/cm/sup 2/).<
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