Abstract: The invention relates to supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependencies, and to the novel nematic liquid-crystal mixtures used therein, which are distinguished in that they comprise at least one compound of the formula IA and at least one compound of the formula IB and/or at least one compound of the formula IC in which Ra, Rb, Rc, Rd, Re, Z, L, q and c have the meaning given.

Abstract: The invention relates to TN and STN liquid-crystal displays and to the novel nematic liquid-crystal mixtures used therein, characterized in that they comprise one or more compounds of the formula I in which R1, R2, A, u, L1 and L2 are as defined herein.

Abstract: The invention relates to supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependencies, and to the novel nematic liquid-crystal mixtures used therein, which are distinguished in that they comprise at least one compound of the formula IA and at least one compound of the formula IB in which Ra, Rb, Rc, Rd, Y1, Y2, n and p have the meaning given.

Abstract: The invention relates to supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angular dependences and to the novel nematic liquid-crystal mixtures employed therein, which are distinguished by the fact that they comprise at least one compound of the formula IA and at least one compound of the formula IB and/or at least one compound of the formula IC in which Ra, Rb, Rc, Rd, Re, Y1, Y2, Y3, Y4, q and p are as defined above.

Abstract: The invention relates to TN and STN displays having very short switching times and good steepness and angular dependence and to the novel nematic liquid crystal mixtures employed therein, which are distinguished by comprising at least one compound of formula IA, where R3 is an alkenyl group having from 2 to 7 C atoms, and comprising at least one compound of formula IB, where R1 and R2 each, independently of one another, are an alkyl, alkoxy or alkenyl group having from 1 to 12 C atoms, with the additional option of 1 or 2 non-adjacent CH2 groups being replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and L is H or F.

Abstract: The invention relates to supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angular dependences and to the novel nematic liquid-crystal mixtures employed therein, which are distinguished by the fact that they comprise at least one compound of the formula IA 1

Abstract: The invention relates to nematic liquid-crystal compositions comprising bisalkenyl compounds of the formula Ia. in which R1 and R2, are each independently alkenyl having 2 to 8 carbon atoms, and Z2 is a single bond, —(CH2)2— or trans-CH═CH—. and to their use in plasma-addressed LCDs.

Abstract: Acetylene derivatives of the formula I in which R, A1, A2, Z1, Z2, Z3, L1, L2, L3, Y, m and n are as defined herein are suitable as components of liquid-crystalline media.

Abstract: Liquid-crystalline media comprising one or more compounds of formula A 1

Abstract: TN and HTN liquid-crystal displays having very short response times and good steepness values and angle dependencies, are obtained using nematic liquid-crystal mixtures which comprise compounds of formula IA in combination with compounds of the formula IC: in which R1 to R3, L1, Z, and C are defined herein.

Abstract: The invention relates to TN and STN liquid-crystal displays and to the novel nematic liquid-crystal mixtures used therein, characterized in that they comprise one or more compounds of the formula I 1

Abstract: Supertwist liquid-crystal displays (SLCDs) with outstanding properties are obtained if the nematic liquid-crystal mixtures used therein comprise one or more compounds of the formula IA and one or more compounds of the formula IB Ra is alkyl, alkoxy, alkenyl or alkenyloxy having 1 to 12 carbon atoms, Rb is alkyl or alkoxy having 1 to 5 carbon atoms, Z is —COO —CH2CH2— or a single bond, and  are each, independently of one another,  and one of the rings  may alternatively be R3 is an alkenyl group having 2 to 7 carbon atoms, R4 is as defined for Ra in the formula IA, and c is 0 or 1.

Abstract: The invention relates to nematic liquid-crystal compositions comprising bisalkenyl compounds of the formula I and to their use in plasma-addressed LCDs.

Abstract: The invention relates to tolan derivatives of the formula I in which R1, R2, A, Z, L1, L2, L3, L4, L5, L6, Q, m and n are as defined herein.

Abstract: The invention relates to bisalkenylbicyclohexanes of the formula I ##STR1## in which R.sup.1, R.sup.2 and Z are as defined in claim 1, and to their use in liquid-crystalline media.

Abstract: Supertwist liquid crystal displays (STN displays) of excellent characteristics are obtained if the nematic liquid crystal mixtures used therein comprise at least one compound of the formula IA ##STR1## and at least one compound of the formula IB ##STR2## in which R.sup.a, R.sup.b, Z, L.sup.a, L.sup.b, L.sup.c, L.sup.d, L.sup.e, L.sup.f, L.sup.g, L.sup.h, R.sup.3, R.sup.4 are as defined below.

Abstract: Supertwist liquid-crystal displays (SLCDs) with outstanding properties are obtained if the nematic liquid-crystal mixtures used therein comprise at least one compound selected from the formulae 1A and 1B ##STR1## and at least one compound of the formula 1C ##STR2## in which R.sup.a is alkyl, alkoxy, alkenyl or alkenyloxy having 1 to 12 carbon atoms,R.sup.b is alkyl or alkoxy having 1 to 5 carbon atoms,Z is --COO--, --CH.sub.2 CH.sub.2 -- or a single bond, andL.sup.a, L.sup.b, L.sup.c, L.sup.d, L.sup.e, L.sup.f, L.sup.g, and L.sup.h in each case independently of one another are H or F,with the proviso that the 1,4-phenylene rings carry not more than 2 fluorine atoms per ring,R.sup.3 is an alkenyl group having 2 to 7 carbon atoms,R.sup.4 is R.sup.a or R.sup.3 andc is 0 or 1.

Abstract: TN liquid-crystal displays and supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependencies are obtained by using nematic liquid-crystal mixtures which comprise at least one compound of formula IA ##STR1## and at least one compound of the formula IB ##STR2## in which R.sup.a, R.sup.b, R.sup.c, L and r are as defined herein.

Abstract: Supertwist liquid-crystal displays having excellent properties are obtained if the nematic liquid-crystal mixture comprises at least one compound of the formula I: ##STR1## and at least one compound of the formula I.sup.* : ##STR2## in which R.sup.1 is alkyl, alkoxy, alkenyl or alkenyloxy having 1 to 12 carbon atoms,R.sup.2 is alkyl or alkoxy having 1 to 8 carbon atoms,Z is --COO--, --CH.sub.2 CH.sub.2 or a single bond,one of the radicals L.sup.1 and L.sup.2 is F and the other is H,Alkenyl.sup.* is an alkenyl radical having up to 7 carbon atoms,L.sup.* is H or F, andR.sup.* is F or an alkyl group having 1 to 12 carbon atoms which is unsubstituted or non-substituted.

Abstract: The invention relates to TN liquid-crystal displays and supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependences, and to the novel nematic liquid-crystal mixtures used therein, which are distinguished by the fact that they comprise at least one compound o the formula IA ##STR1## and at least one compound of the formula IB ##STR2## in which R.sup.a, R.sup.b, R.sup.c, Ring A*, L, l and r are as defined in claim 1.