TRIAZINE RING BASED POLYMERS FOR PHOTOINDUCED LIQUID CRYSTAL ALIGNMENT, LIQUID CRYSTAL ALIGNMENT LAYER CONTAINING THE SAME, LIQUID CRYSTAL ELEMENT USING THE ALIGNMENT LAYER AND METHOD OF MANUFACTURING THE SAME
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United States of America Patent
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Jun 27, 2006
Grant Date -
Feb 26, 2004
app pub date -
Nov 11, 2002
filing date -
Nov 12, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Triazine ring based polymers for photoinduced liquid crystal alignment introduces photoactive groups for inducing, reinforcing, improving and preserving liquid crystal alignment, for example photoreactor such as cinnamate, coumarin, chalcone and maleimide, as a chain to have at least one photoactive group. One of the photoactive groups can experience Fries rearrangement which induces liquid crystal alignment, and other groups can experience photodimerization, photoisomerization, photocrosslinkng or photodegradation to reinforce, change or preserve the generated alignment.
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