Ferroelectric chiral smectic liquid crystal composition
AssigneesChisso Corporation, Hitachi, Ltd.
InventorsKenji Furukawa, Kanetsugu Terashima
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Abstract
A ferroelectric liquid crystal composition having a long helical pitch and a light switching element having a quick response property are provided. This composition comprises (1) at least one member selected from the group consisting of liquid crystal compounds having a smectic C phase and no helical structure and liquid crystal compounds having only a nematic phase as a liquid crystal phase and no helical structure and (2) at least one chiral smectic liquid crystal compounds.
Claims2
A ferroelectric chiral smectic liquid crystal composition consisting of 1-30% by weight of at least one liquid crystal compound having only nematic phase as a liquid crystal phase and no helical structure and being expressed by the formula:
- ##STR109## wherein R.sub.2 represents butyl or pentyl and R.sub.3 represents ethyl or pentyl and 99-70% by weight of at least one chiral smectic compound selected from the group consisting of ##STR110##
Dependencies are inferred from the claim text.