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US 5,308,543 AGranted
Nematic liquid-crystal composition for active matrix application
AssigneesMerck Patent Gesellschaft mit besrankter Haftung, Sharp Kabushiki Kaisha
InventorsKei Sasaki, Masako Okada, Shuichi Kohzaki, Fumiaki Funada, Bernhard Rieger, Hiroshi Numata, Reinhard Hittich, Herbert Plach, Thomas Geelhaar, Eike Poetsch, Volker Reiffenrath
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Abstract
The invention relates to a nematic liquid-crystal composition for active matrix displays with high voltage holding ratio and extremely good low temperature stability.
Claims4
A nematic liquid-crystal composition based on terminally and laterally fluorinated compounds, comprising about 8 to 60% by weight of one or more compounds from group 1:
- ##STR8## wherein R.sup.1 denotes a straight-chain alkyl group of 2 to 7 carbon atoms, about 8 to 60% by weight of one or more compounds from group 2:
- ##STR9## wherein R.sup.2 denotes a straight-chain alkyl group of 2 to 7 carbon atoms, L is H or F and Q is OCF.sub.2, OCFH, OCFCl or a single bond, about 8 to 60% by weight of one or more compounds from group 3:
- ##STR10## wherein R.sup.3 denotes a straight-chain alkyl group of 2 to 7 carbon atoms, E is ##STR11## and L and Q are as defined above, and 0 to 60% by weight of one or more compounds from group 4:
- ##STR12## wherein R.sup.4 denotes a straight-chain alkyl group of 2 to 7 carbon atoms and L is H or F.
1 more element
Dependencies are inferred from the claim text.