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US 5,310,500 AGranted
Liquid crystal compounds
AssigneeShowa Shell Sekiyu K.K.
InventorsYoshihiko Aihara, Tadaaki Isozaki, Toru Ooide, Noriko Yamakawa
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Abstract
Antiferroelectric liquid crystal compounds are provided which have the formula ##STR1## wherein R.sub.1 represents an alkyl group having 5-18 carbon atoms, R.sub.2 represents an alkyl group having 6-16 carbon atoms, Y represents a group ##STR2## and A represents a group ##STR3##
Claims3
A liquid crystal compound represented by the formula (I):
- ##STR60## wherein;
- R.sub.1 represents an alkyl group having 5-18 carbon atoms,
- R.sub.2 represents an alkyl group having 6-16 carbon
- Y represents a group ##STR61## and A represents ##STR62## and which exhibits optically tristable states in S.sup.* (3) phase.
1 more element
A liquid crystal compound represented by the following formula:
- ##STR65## and which exhibits optically tristable states in S.sup.* (3) phase.
Dependencies are inferred from the claim text.