Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-12-15
1998-04-14
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 85, G09G 334
Patent
active
057398011
ABSTRACT:
A multithreshold electrical twisting ball display device. The device is composed of electrically and optically anisotropic spheroidal balls of at least two different rotation thresholds, disposed in an elastomer substrate, together with an addressing electrode assembly. The addressing electrode assembly allows a preferred region of the substrate to be selected in which at least one ball of the first set and at least one ball of the second set are disposed, and first and second electric field to be applied to the preferred region thus selected, each of the first and second electric fields extending throughout the preferred region. The first field facilitates a contemporaneous rotation of balls of both the first and second sets rotatably disposed in the preferred region. The second electric field facilitates a rotation of balls of the second set rotatably disposed in the preferred region, without facilitating a rotation of any ball of the first set rotatably disposed in the preferred region. Also disclosed are the substrate material and electrode assembly for the device, and a method of using the device.
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Hjerpe Richard
Silverman Alexander G.
Tran Vui T.
Xerox Corporation
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