Electro-optical liquid crystal display element

An electrooptical liquid crystal display element, containing a dielectric with at least two liquid crystalline components, which dielectric comprises at least one fluorine-containing compound of the formula I

• R.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.2 --R.sup.2 I
• wherein
• R.sup.1 is H, F, Cl, Br, --CN, --NCS or an unsubstituted straight-chain alkyl group having 1-15 C atoms, in which one or two CH.sub.2 groups are optionally replaced by --O--, --CO--, --O--CO--, --CO--O--, --C.tbd.C--, or --CH.dbd.CH--, no 2 heteroatoms being linked to one another;
• R.sup.2 is perfluoroalkoxy of not more than 15 carbon atoms, and having at least 2 CF2 groups in which one or more CF.sub.2 groups are optionally replaced by --CF.dbd.CF--,
• A.sup.1 is 1,4-phenylene which is unsubstituted or substituted by one or two F or Cl atoms or CH.sub.3 groups or CN groups, and in which one or two CH Groups are optionally replaced by N atoms;
• 1,4-cyclohexylene in which one or two non-adjacent CH.sub.2 groups are optionally replaced by O atoms or S atoms;
• piperidine-1,4-diyl;
• 1,4-bicyclo[2.2.2]octylene, unsubstituted or CN-- substituted decahydronaphthaline-2,6-diyl or 1,2,3,4-tetrahydronaphthaline-2,6-diyl;
• A.sup.2 is 1,4-phenylene which is substituted by one or two F atoms;
• m is 1, 2, or 3;
• and
• Z.sup.1 is --CO--O--, --O--CO--, --OCH.sub.2 --, --CH.sub.2 O--, --CH.sub.2 CH.sub.2 -- or a single bond,
• it being possible for multiple groups A.sup.1 to be identical or different and for multiple groups Z.sup.1 to be identical or different in the case where M=2 or 3, whereby said element is based on the twisted cell, guest-host, deformation of aligned phase, dynamic scattering, SBE or STN effects.