Chiral smetic liquid crystals and glassy materials containing the same for displaying and storing information
AssigneeHoechst Aktiengesellschaft
InventorsGerd Heppke, Feodor Oestreicher
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Abstract
The chiral smetic liquid-crystalline compounds of the general formula (I) M.sub.1.sup.* --B--M.sub.2.sup.* (I) solidify on cooling from the liquid-crystalline phase in glassy form, as a result of which they are suitable for materials for displaying and storing information. Such materials may be used in electro-optic data stores or display components which are based on the ferroelectric or electroclinic switching effect in a chiral or chirally doped, smetic liquid-crystalline phase. In the general formula, M.sub.1.sup.*, M.sub.2.sup.* stand for chiral smetogenic groups and --B-- is, as bridging link, a typical bivalent group.
Claims4
A chiral smectic liquid-crystalline compound of the general formula (I)
- M.sup.* .sub.1 --B--M.sup.* .sub.2 (I)
- in which M.sup.* .sub.1, M.sup.* .sub.2 are, independently of each other, but in particular, identical chiral smectogenic groups and the bridging link --B-- stands for a bivalent group, and which simultaneously solidify in a glassy form from the liquid-crystalline phase on cooling.
Dependencies are inferred from the claim text.