Liquid-crystal display device
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United States of America Patent
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May 11, 1993
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N/A
app pub date -
Aug 13, 1992
filing date -
Oct 18, 1989
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Abstract
A liquid-crystal display device having a twisted nematic liquid-crystalline material is provided with a layer of an optically anisotropic material to obtain a colourless display device which is rich in contrast. The optically anisotropic material is a synthetic resin composition comprising a polymer network having a helicoidal order manufactured from a curable liquid-crystalline composition having a chiral dopant.
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