Cholesteric liquid crystal devices
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United States of America Patent
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Feb 11, 1997
Issued Date -
N/A
app pub date -
Feb 16, 1995
filing date -
Jun 21, 1993
priority date (Note) -
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Abstract
A liquid crystal cell including chiral nematic liquid material with negative dielectric anisotropy. The cell is placed between two orthogonal polarizers. In the absence of an applied field, the liquid crystal molecules assume a homeotropic alignment. The liquid crystal molecules assume a twisted pattern in the field-on state.
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