A liquid crystal mixture intended for electrooptical displays having no polarizers, consisting of: a nematic liquid crystal as the host phase; an optically active additive to give the host phase a cholesteric structure; and at least one pleochroic anthraquinone dye as the guest phase dissolved in the host phase, said anthraquinone dye having the formula: <IMAGE> (I) wherein R2, R3 and R4 are the same or different substituents and are selected from the group consisting of hydrogen, hydroxyl, amino, and short-chain N-monoalkylamino substituents; Y represents halogen, alkyl or alkoxy groups each with 1-16 carbon atoms, amino, alkylamino groups with 1-16 carbon atoms in the alkyl portion, nitro, or hydroxyl group; X represents halogen, amino or the group R5, wherein R5 is an alkyl group with 1-18 carbon atoms, an alkyl chain with 1-18 carbon atoms that is interrupted with one or two oxy groups or a group having the formula: -(CH2)p-(O-C2H4)r-O-R6 wherein p is an integer from 1 to 6, r is either zero or an integer from 1 to 6, and R6 is an alkyl group with 1-6 carbon atoms; the symbol A represents a 5- or 6-membered aromatic, alicyclic or heterocyclic ring which may be substituted with oxo- and/or imino groups, or optionally, hydroxy and/or amino groups and indices n and m can be 0, 1 or 2.
Liquid crystal mixture