Abstract: Compounds of formula I, and liquid-crystalline media, preferably having a nematic phase and negative dielectric anisotropy, comprising: a) one or more compounds of formula I and one or more other compounds selected from: b) one or more compounds of formula II and/or c) one or more compounds selected from compounds of formulae III-1 to III-4 and B Use thereof in electro-optical displays, particularly in active-matrix displays based on the VA, ECB, PALC, FFS or IPS effect and use of compounds of formula I for stabilisation of liquid-crystalline media which comprise one or more compounds of formula II and/or one or more compounds selected from compounds of formulae III-1 to III-4 and B.

Abstract: Novel dithiopyrrolopyrrole derivatives having dichroic properties which have very high photostability in solution in a liquid-crystalline host are proposed.

Abstract: The present invention discloses a negative dielectric anisotropic liquid crystal composition, characterized in that the liquid crystal composition comprises one or more compounds represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III and one or more compounds represented by formula IV, In the liquid crystal molecules of the composition, the van der Waals force therebetween is used as a motive force, such that the liquid crystal molecules generate an attractive force at an appropriate distance and positional relationships, thereby enabling the liquid crystal molecules to have excellent regular alignment characteristics, which is favorable for the liquid crystal molecules to modulate the transmission and blocking of light in the liquid crystal display device.

Abstract: A liquid-crystalline medium, preferably having a nematic phase and exhibiting a dielectric anisotropy of 0.5 or more, which contains compounds of formula B and formula S in which denotes denotes the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, displays of this type which contain a liquid-crystalline medium of this type, and the use of the compounds of formula S for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.

Abstract: The invention relates to a liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula S in which denotes and to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of formula S for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Abstract: An object of the present invention is to provide a composition that realizes high ?n, has a wide liquid crystal phase temperature range, small viscosity, excellent low-temperature solubility, and high resistivity and voltage holding ratio, and is stable against heat and light, and to provide a liquid crystal composition having an excellent lens effect and excellent chemical stability using the composition, and a liquid crystal display device and a liquid crystal lens that use the liquid crystal composition. The present invention provides a liquid crystal composition that contains one or two or more compounds represented by general formula (i) and one or two or more compounds represented by general formula (ii), a liquid crystal display device using the liquid crystal composition, a liquid crystal lens using the liquid crystal composition, and a birefringence lens for stereoscopic image display using the liquid crystal composition.

Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a cyclopentane group and at least two other rings. In one embodiment, the liquid crystal compounds of the invention comprise a cyclopentane group and at least two other rings, one of which is a fused ring system.

Abstract: Provided is a liquid crystal composition, comprising: one or more compounds of general formula I accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula II accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula III accounting for 1-20% of the total weight of the liquid crystal composition; and one or more compounds of general formula IV accounting for 30-80% of the total weight of the liquid crystal composition. The liquid crystal composition has at least one of the following properties: a large specific resistance, a high voltage holding ratio, a suitable optical anisotropy, a large dielectric anisotropy, a small viscosity, a low threshold voltage, etc., and is also green and environmentally friendly.

Abstract: The present application relates to mixtures which have liquid-crystalline properties. The application furthermore relates to the use of the mixtures in devices which regulate the transmission of light through an area element.

Abstract: The present invention provides a liquid crystal composition comprising one or more compounds of general formula I and one or more compounds of general formula II; the liquid crystal composition of the present invention can work at very high and very low temperatures, has a very short response time and a better reliability to light and heat, and particularly exhibits no image retention or a significantly reduced image retention after a long time operation.

Abstract: The present invention relates to liquid crystal mixtures comprising one or more compounds of the formula A and, in addition one or more compounds of formula I or one or more compounds of formula II wherein the individual radicals have the respective meanings indicated in claim 1, to the use thereof for high-frequency components, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media.

Abstract: Provided is a liquid crystal compound represented by formula I, the compound having a positive dielectric anisotropy, a great elastic constant and a good solubility. Further provided is a liquid crystal composition comprising the liquid crystal compound represented by formula I, the liquid crystal composition having a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by the adjustment of the monomer ratio, and a higher clearing point (a very wide service temperature range), and in particular, the liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.

Abstract: The present application concerns a switchable device for the regulation of light transmission, which has a compartmented structure, where the switching state of each of the compartments can be controlled individually.

Abstract: A compound represented by formula (1), a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. R is alkyl having 1 to 15 carbons or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1 and Z2 are independently a single bond, —COO— or the like; Y1, Y2 and Y3 are independently hydrogen, fluorine or chlorine; and m is 0, 1 or 2.

Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds of formula T and one or more compounds selected from the group of compounds of formulae I, II and III, in which the parameters have the meaning indicated in Claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.

Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having high maximum temperature or low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, or a specific compound having a polymerizable group as an additive.

Abstract: The present invention provides a novel liquid crystal material composition comprising one or more compound, in order to achieve the properties of low viscosity, high resistivity, good low-temperature mutual solubility, fast response, excellent transmission, and which can be used for a variety of fast response display modes. Since the working temperature of a LCD material is subjected to the temperature range of individual LC molecules, information can only be displayed in a specific temperature range of the specific liquid crystal macro-alignment phase. At low temperature, the viscosity of liquid crystal increases exponentially, which in turn substantially reduces the response speed and overall performances of the display system.

Abstract: A liquid crystal composition includes a polymerizable compound (or polymer) and a polar compound, where the homeotropic alignment of liquid crystal molecules can be achieved by the action of these compounds, and a liquid crystal display device includes such a composition. A nematic liquid crystal composition has positive dielectric anisotropy and includes a polymerizable compound as a first additive and a polar compound as a second additive, and the composition may include a specific liquid crystal compound having a large positive dielectric anisotropy and a specific liquid crystal compound having a high maximum temperature or a small viscosity, and a liquid crystal display device includes such a composition.

Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and a short helical pitch, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific optically active compound as an additive, and a specific compound having high maximum temperature or small viscosity as a first component, and may contain a specific compound having positive dielectric anisotropy as a second component, or a specific compound having negative dielectric anisotropy as a third component.

Abstract: Provided are a liquid-crystal-medium having stability to heat, light and so forth, a wide liquid-crystal-phase temperature-range and significantly large dielectric-anisotropy and developing an optically isotropic liquid-crystal-phase; and various optical-devices used in a wide temperature-range, having short response-time, a large contrast-ratio and low drive-voltage and suppressing decrease in an effective dielectric-constant in a high-frequency range.

Abstract: The present application relates to a device for regulating the passage of light which is characterised in that it comprises a layer comprising a liquid-crystalline mixture containing a characteristic structural element.

Abstract: A polymerizable compound has a high polymerizability, a high conversion ratio and a high solubility in a liquid crystal composition. A polymerizable composition contains the compound. A liquid crystal composite is prepared from the composition. A liquid crystal display device includes the liquid crystal composite. The polymerizable compound is formed in which the polymerizable compound has at least two polymerizable groups in which at least one polymerizable group is acryloyloxy or methacryloyloxy, and at least one remaining polymerizable group is a polymerizable group selected from the group of groups represented by formulas (P-1), (P-2) and (P-3). In formulas (P-1) to (P-3), R1 to R8 are independently hydrogen, fluorine, methyl, ethyl or trifluoromethyl.

Abstract: Shown are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, a specific compound having high maximum temperature or low viscosity as a fourth component, or a specific compound having a polymerizable group as an additive.

Abstract: A compound represented by formula (1), a liquid crystal composition to which the compound is added, and a liquid crystal display device containing the composition. In formula (1), R1 is hydrogen or alkyl having 1 to 20 carbons, or the like; R2 and R3 are independently methyl, ethyl, isopropyl, or t-butyl; ring A is 1,4-cyclohexylene, 1,4-phenylene or the like; Z is a single bond or alkylene having 1 to 6 carbons, or the like; and m is 0, 1, or 2.

Abstract: The disclosure provides a liquid crystalline compound that has at least one of physical properties such as high stability with respect to heat and light, a high clearing point (or a high upper limit temperature), a low lower limit temperature of a liquid crystal phase, a low viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant, favorable compatibility with other liquid crystalline compounds at room temperature and low temperatures, a liquid crystal composition including the compound, and a liquid crystal display element including the composition. The compound is represented by Formula (1). Here, R1 is an alkyl group having 2 to 10 carbon atoms in which one —CH2CH2— is substituted with —CH?CH—; R2 is an alkyl group having 1 to 8 carbon atoms; ring A1 is 1,4-cyclohexylene; Y1 and Y2 are hydrogen or fluorine; Z1 is a single bond; and n1 is 1 or 2.

Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, A1 denotes L1 denotes F, Cl, CF3, OCF3 or CHF2, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.

Abstract: Disclosed are a liquid crystal composition and a display element or display using the liquid crystal composition, wherein the liquid crystal composition contains one or more compounds of general formulas I, II and III, The liquid crystal composition disclosed in the present invention has an excellent performance, an optical anisotropy in the range of 0.080 to 0.150, a low rotary viscosity, a fast response time, and good chemical, optical and thermal stabilities, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for active matrix display elements, such as active matrix displays using a VA, FFS or IPS mode.

Abstract: A display element, a method for manufacturing the same, and a use thereof are provided. The display element can induce a decrease in driving voltage without reducing a difference in a cell gap, have durability by ensuring proper adhesion characteristics, and, specifically, can effectively overcome a problem of the display element including a vertical alignment adhesive layer, in particular, a problem of increasing driving voltage, which can be generated when the thickness is increased so as to improve the adhesion characteristics.

Abstract: Provided is an optical film which has a maximum absorption at a wavelength in the range of 600 to 680 nm, has a high dichroic ratio, and is excellent in light resistance. The optical film includes: a polymer of a polymerizable liquid crystal compound; and a compound represented by the following general formula (1).

Abstract: The present application relates to a liquid crystal composition, a polarizing element and a use of the polarizing element. Since the polarizing element may be prepared by a simple coating process, the guest host type liquid crystal composition of the present application allows not only for reducing the manufacturing cost and lightweight thinning of the polarizing element, but also for manufacturing the polarizing element showing an excellent heat resistant stability without changes of absorption spectrum to transmission spectrum even in a severe condition such as high temperature environment. Such a polarizing element can be applied to various display devices such as liquid crystal display devices, EL display devices, field emission display devices, display devices using electronic papers, projection display devices or piezoelectric ceramic display devices.

Abstract: Disclosed are a liquid crystal composition comprising a liquid of formula I and formula II-B, and a liquid crystal compound and a related liquid crystal display device wherein R0, R1, R2 and R3 each independently represent an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluoro-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluoro-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluoro-substituted alkenoxy group having a carbon atom number of 3-8, and any one or more non-connected CH2 in R0, R1, R2 and R3 may be substituted with cyclopentyl, cyclobutyl, cyclopropyl or —O—; Y represents ethyl or ethenyl; each independently represent one of and any fluorobenzene; represents benzene or fluorobenzene; and m represents one of 1,

Abstract: A liquid crystal composition comprises a compound of general formula I serving as a first component; a compound of general formula II-1 and/or general formula II-2 serving as a second component; a compound of general formula III serving as a third component; a compound of general formula IV serving as a fourth component; a compound of general formula V serving as a fifth component; and a compound of general formula VI serving as a sixth component. The liquid crystal composition has at least one characteristic among the characteristics of a large dielectric anisotropy, a large optical anisotropy, a high voltage holding ratio and a low threshold voltage and the like, and is suitable to be used in a liquid crystal display device. Additionally, a liquid crystal display device comprising the liquid crystal composition is also provided.

Abstract: Shown is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and small frequency dependence, or has a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition contains a specific compound having large positive dielectric anisotropy as a first component, and a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having positive dielectric anisotropy as a fourth component or a specific compound having negative dielectric anisotropy as a fifth component.

Abstract: An asymmetric benzotrichalcogenophene compound and a polymer are provided. The asymmetric benzotrichalcogenophene compound is a heterocyclic compound having furan, thiophene, selenophene and/or tellurophene subunits. The polymer has an asymmetric benzotrichalcogenophene subunit and can be formed by polymerizing the asymmetric benzotrichalcogenophene compound and an electron-accepting compound. The polymer may be used as a semiconductor active layer material in an organic field effect transistor or a heterogeneous interface material of an organic solar cell.

Abstract: The present invention relates to the technical field of liquid crystal displays, and particularly relates to a liquid crystal composition containing a 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and use thereof, wherein the liquid crystal composition of the present invention comprises, in percentages by weight, 1-50% of one or more compounds represented by general formula I and 10-70% of one or more compounds represented by general formula II, and may further comprise 0-30% of compounds represented by general formula III and/or 6-45% of one or more compounds represented by general formulas IV to XIII. The liquid crystal composition provided by the present invention has a low rotational viscosity and a large elastic constant, is presented as having a shorter response time, and can significantly improve the display effect of a liquid crystal display when applied to TN, IPS and FFS mode displays.

Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one selected from compounds represented by general formula (iii). Moreover, a liquid crystal display device using the composition and an IPS or FFS device that uses the composition are provided.

Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one compound represented by general formula (iii). Also provided is a liquid crystal display device that uses the composition and an IPS or FFS device that uses the composition.

Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, Z1, Z2 and L1-3 have the meanings defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.

Abstract: Provided is a liquid crystal composition satisfying at least one or having suitable balance regarding at least two of characteristics such as high maximum or low minimum temperature of a nematic phase, large optical anisotropy, large positive dielectric anisotropy and high stability to ultraviolet light, and a liquid crystal display device including such a composition, particularly an encapsulated liquid crystal display device, and a liquid crystal display device serving as a constituent of 3D lenses.

Abstract: A liquid-crystalline medium having a nematic phase, a dielectric anisotropy of 0.5 or more and a ratio of the dielectric constant perpendicular to the director (??) to the dielectric anisotropy (??), i.e. (??/??), of 2.0 or less and comprises one or more compounds of formula I: wherein the parameters have the meaning given in the text. An electro-optical display containing such a medium, particularly in an active-matrix display based on the IPS or FFS effect. Methods for using of the compounds of formula I for improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Abstract: Provided are a liquid crystal compound having larger dielectric anisotropy and superb heating reliability in comparison with a similar compound, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1). In formula (1), for example, R1 is alkyl having 1 to 15 carbons, ring A1 is 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 1,4-phenylene in which at least one hydrogen is replaced by halogen or tetrahydropyran-2,5-diyl; Z1 is a single bond or —CF2O—; L1 and L2 are hydrogen or halogen; Y1 and Y2 are hydrogen or halogen; and a is an integer from 1 to 4.

Abstract: There is provided a liquid crystal composition including at least one compound represented by General Formula (i) and at least one compound represented by General Formula (N). The total amount of the compound represented by General Formula (i) is 10% by mass or greater. In the liquid crystal composition and the liquid crystal display element using the composition, the liquid crystal composition has a positive ?? and a flat transmission characteristic curve. Therefore, gradation characteristics are easily controlled. Furthermore, display defects due to burn-in, dropping marks, and the like can be suppressed, and therefore excellent display quality is exhibited. The liquid crystal display element using this liquid crystal composition can be also provided.

Abstract: Provided is a liquid crystal compound that has high stability to heat, light and so forth, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1). For example, R1 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; R2 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 3 to 10 carbons; ring A1 is 1,4-cyclohexylene or 1,4-phenylene; ring A2 is 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond; Z3 is —O— or a single bond; and L1 is F, CF3 or CF2H.

Abstract: The present invention relates to a temperature-reactive device for the regulation of light transmission, containing a liquid-crystalline medium and a compound of formula I, capable of promoting or inducing homeotropic alignment to the adjacent liquid crystal medium at a given temperature. The invention furthermore relates to a process for the temperature-dependent control of light transmission through a layer of a liquid-crystalline medium.

Abstract: The present application relates to a liquid-crystalline material which comprises at least one dye compound and at least one compound of a formula (IA) or (IB). The liquid-crystalline material is suitable for use in optical switching devices, in particular in devices for the homogeneous regulation of the passage of light through an area.

Abstract: Subject It is to provide a polymerizable compound having a high polymerization reactivity, a high conversion yield and a high solubility in a liquid crystal composition, a polymerizable composition including this compound, a liquid crystal composite prepared from this polymerizable composition and a liquid crystal display device containing this composite. Means for solving the Subject A compound represented by formula (1), the liquid crystal composition and the liquid crystal display device. In the formula, for example, ring A1, ring A2 and ring A4 are phenylene or cyclohexylene; Sp1 and Sp2 are a single bond or alkylene having 1 to 6 carbons; Z1 and Z2 are —CH?CH— or —C?C—; a is 1, b is 0; and P1 and P2 are a polymerizable group.

Abstract: A liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and a long service life. The liquid crystal composition contains a compound that can contribute to high stability to heat or ultraviolet light, and has negative dielectric anisotropy and the nematic phase.

Abstract: A liquid crystal composition includes at least one of liquid crystal molecules represented by Chemical Formulas A and B: where in Chemical Formulas A and B, L1 to L4 are each independently —H, —F, —Cl, —OCF3, —CF3, —CH2F, or —CHF2, R1 to R4 are each independently hydrogen, a halogen, a cyano group, a C1-C12 alkyl group, or a C1-C12 alkoxy group, and Z1 to Z4 are each independently a single bond, —O—, —COO—, —OCO—, —CF2O—, —OCF2-, —CH2O—, —OCH2-, —SCH2-, —CH2S—, —CH2CH2-, —C2F4-, —CH2CF2-, —CF2CH2-, —CH2n-, where n is a natural number of 1 to 12, —CH?CH—, —CF?CF—, —CH?CF—, —CF?CH—, —C?C—, or —CH?CHCH2O.

Abstract: A liquid crystal compound is represented by the formula (1). For example, in the formula (1): R1 and R2 each represent an alkyl having 1 to 10 carbon atoms, an alkenyl having 2 to 10 carbon atoms, or an alkoxy having 1 to 9 carbon atoms; a ring A1 and a ring A2 each represent 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 each represent a single bond, —(CH2)2—, —CH?CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, or —OCH2—; and a and b each represent 0, 1, 2, or 3 and the sum of a and b is 4 or less.

Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, Z1, Z2 and L1-3 have the meanings defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.