Electric display device
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United States of America Patent
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-
Aug 3, 1993
Grant Date -
N/A
app pub date -
Mar 6, 1991
filing date -
Mar 6, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bistable electrostatic light valve display in which a movable electrode is disposed opposite a fixed electrode and is biased to move in a preferred direction upon application of an electric field across the electrodes to produce a light valve or light shutter. In one embodiment, the movable electrode is restrained at one end and coils about the fixed end in a preferential roll direction. The bias is achieved by inducing anisotropic stress or anisotropic stiffness. In another embodiment, the moveable electrode is restrained at both ends and is biased upwardly by anisotropic stress or stiffening.
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