Blue phase liquid crystal composition and method for forming blue phase liquid crystal
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United States of America Patent
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Apr 9, 2013
Grant Date -
Nov 1, 2012
app pub date -
Nov 3, 2011
filing date -
Apr 28, 2011
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Abstract
A blue phase liquid crystal composition includes a chiral dopant, a positive liquid crystal component and a negative liquid crystal component. The positive liquid crystal component includes at least one positive liquid crystal material, has a positive dielectric anisotropy and has no blue phase properties with respect to the chiral dopant. In addition, the negative liquid crystal component includes at least one negative liquid crystal material, has a negative dielectric anisotropy and has no blue phase properties with respect to the chiral dopant, so that the blue phase liquid crystal composition has a dielectric anisotropy between 0.5 and 14 and a blue phase temperature range larger than 3° C.
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