The invention relates to a mixture of liquid crystals nematic. / p & & p & this mixture of liquid crystals is constituted by: / p & & p & - at least one 1 - (alkylcyclohexyl) - 2 - (alkylfluorobiphenylyl) ethane of formula: & br / (see appended drawing in bopi) & br / in which r and r, which may be identical or different, are alkyl of 1 to 7 carbon atoms, and / p & & p & - at least a compound chosen from among: / p & & p & a.les bicyclooctane alkyl carboxylates, alkyl fluorophenyl, 1 / p & & p & b.les biphenylbicyclohexyldialkyle, 1 / p & & p & c.les alkylcyclohexylcarboxylates of dicyanoalcoxyphenyle, 1 / p & & p & d.les bicyclohexycarbonitrile dialkyl. / p & & p & the use of such mixtures makes it possible to obtain a degree of multiplexabilite high in the display devices employing the effect of birefringence 27, the electrical standpoint.
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