Ferroelectric liquid crystal cells
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United States of America Patent
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Jun 23, 1992
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N/A
app pub date -
Jan 28, 1991
filing date -
Jan 31, 1990
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Abstract
Relaxation effects of a uniform mode ferroelectric liquid crystal cell with obliquely evaporated alignment layers, characterized by the reduction in apparent tilt angle consequent upon removal of a switching stimulus, are eliminated by a poling treatment that typically comprises the application of a relatively low frequency (c. 500 Hz) relatively large amplitude (c. 60 volts peak-to-peak) electric potential difference across the thickness of the liquid crystal layer.
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