Interference color compensation double layered twisted nematic display
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United States of America Patent
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Apr 17, 1984
Grant Date -
N/A
app pub date -
Dec 3, 1981
filing date -
Dec 9, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A double-layered twisted nematic liquid crystal display device which comprises a double layered structure including first and second layers of liquid crystal, the molecules of said liquid crystal having their longitudinal axes which are twisted, the direction of twist in the first layer being different from that in the second layer and wherein the longitudinal axes of the liquid crystal molecules in each of the first and second layers are perpendicular to each other, an electrical power supply means for applying a voltage to one of the first and second layers for controlling the orientation of the molecules of the liquid crystal in the first layer, the other of said first and second layers serving as a compensator which compensates for interference coloring, and a polarizing means for visibly enhancing the orientation of the molecules of the liquid crystal in the first layer when the voltage is applied thereto.
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