Method of making a gyricon display using magnetic latching

Details Method of making a gyricon display using magnetic latching Method of making a gyricon display using magnetic latching

1998-11-25

2000-08-29

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

427130, 427131, 427162, 427212, 427258, 4273855, 427386, 4274071, 427550, 427598, B01J 1908

Patent

active

061105384

ABSTRACT:
A method of making rotating element sheet material utilizing magnetic latching is provided. The first step is providing a sheet of sheet material comprising a substrate with a surface and rotatable elements disposed therein. The elements each have an optical and electrical anisotropy, and comprise at least two portions. One of the portions is magnetizable. After the magnetizable portions have been oriented in a common direction, they are magnetized substantially uniformly. The elements can be oriented such that the magnetized portions are disposed towards the surface of the substrate. A layer of hardenable mixture containing a plurality of magnetic particles is then applied to the surface of the substrate. The hardenable liquid is kept liquid for a period of time to allow the migration magnetic particles to the area of the layer in the vicinity of the magnetized portions of the rotatable elements. Then the hardenable liquid is solidified to trap the magnetic particles in said layer in the area of the layer in the vicinity of the magnetized portion of the rotatable elements to form a magnetic pad.

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