Abstract: The present invention relates to an electro-optical light modulation element and to electro-optical displays and display systems, such as television screens and computer monitors, containing elements of this type. The light modulation elements according to the invention contain a mesogenic modulation medium which is in the isotropic phase during operation of the light modulation elements and are particularly distinguished by very short response times in addition to good contrast and low viewing-angle dependence. The mesogenic modulation media used in the electro-optical light modulation elements are likewise a subject-matter of the present invention.

Abstract: The invention relates to a conjugated copolymer comprising indenofluorene and triarylamine units and to its use in organic electronic devices.

Abstract: The present invention relates to an electro-optical light modulation element and to electro-optical displays and display systems, such as television screens and computer monitors, containing elements of this type. The light modulation elements according to the invention contain a mesogenic modulation medium which is in the isotropic phase during operation of the light modulation elements and are particularly distinguished by very short response times in addition to good contrast and low viewing-angle dependence. The mesogenic modulation media used in the electro-optical light modulation elements are likewise a subject-matter of the present invention.

Abstract: The present invention is related to compounds for use in liquid crystal media, liquid crystal media comprising said compounds, the use of said media in electro-optical devices, said electro-optical devices, and the use of said compounds in mesogenic media for use in electro-optical devices that may be operated in an optically isotropic state.

Abstract: The present invention relates to ionic liquids of low viscosity and high electrochemical stability, in particular for use in the area of electrochemistry and as solvents for carrying out chemical reactions.

Abstract: The instant invention relates to mesogenic media comprising one or more compounds which comprise two or more mesogenic groups two of which are linked to the ortho-positions of an aromatic ring, preferably of formula (I) wherein the parameters are as specified in the text, preferably the instant invention relates to mesogenic media showing a blue phase and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices. The instant invention further relates to compounds of formula (I).

Abstract: The invention relates to pyran derivatives of the formula I and to a process and intermediates for their preparation and derivatisation, and to the use thereof in liquid-crystalline media.

Abstract: The invention relates to a conjugated copolymer comprising indenofluorene and triarylamine units and to its use in organic electronic devices.

Abstract: The invention relates to chiral phenols, preferably of formula (I), the different parameters having the meaning indicated in the description, liquid crystal media which contain said compounds as chiral doping agents and/or stabilizers, and the use thereof in electro-optical displays.

Abstract: The present invention relates to an electro-optical light modulation element and to electro-optical displays and display systems, such as television screens and computer monitors, containing elements of this type. The light modulation elements according to the invention contain a mesogenic modulation medium which is in the isotropic phase during operation of the light modulation elements and are particularly distinguished by very short response times in addition to good contrast and low viewing-angle dependence. The mesogenic modulation media used in the electro-optical light modulation elements are likewise a subject-matter of the present invention.

Abstract: The invention relates to an electro-optical light control element and to electro-optical displays and display systems, e.g. television screens and computer monitors, which contain elements of this type. The inventive light control elements contain a mesogenic control medium (2) that exists in an optically isotropic phase when the light control elements are in operation. In addition to having a good contrast, a low dependency on viewing angle and very short switching times, the light control elements are particularly characterized by having relatively low drive voltages. The inventive electro-optical light control elements contain a solid dielectric layer (5) between the electrode structure (3, 4) and the mesogenic control layer. The invention also relates to the mesogenic control media, which are used in the electro-optical light control elements and which can exist in a blue phase.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more compounds of the formula I and one or more compounds of the formula IA in which R1, R2 ring A, ring B, L1-4, Z1, Z2, X1, X2 and a are as defined in claim 1, where the proportion of the compounds of the formula I in the medium is at least 18% by weight.

Abstract: The invention relates to an electro-optic light control element, electro-optic displays containing said elements and display systems such as TV screens and computer monitors. The inventive light control elements contain a mesogenic control medium which is present in the isotropic phase during operation of the light control elements and arc characterized both by good contrast and low angular field dependence and particularly by very short switching, times. The invention also relates to the mesogenic control media used in the electro-optic light control elements.

Abstract: The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I ?and at least one compound of the formula II ?and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I in which Z1, Z2, Z3, a, b and c are as defined in claim 1, and to electro-optical displays containing a liquid-crystalline medium of this type.

Abstract: The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.

Abstract: Liquid-crystalline compounds of the formula I in which R1, A1, A2, Z1, Z2, X, a, b, L1, L2 and L3 are as defined herein, and to liquid-crystalline media comprising at least one compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.

Abstract: The present invention relates to dielectrically positive, nematic liquid crystalline media having a small frequency dependence of the dielectric anisotropy. The media are particularly well suited for application in active matrix displays. The present invention relates to the use of the inventive media in active matrix displays, as well as to these active matrix displays themselves.

Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, comprising one or more compounds of formula I wherein the parameters have the meanings given in the text. It also relates to the compounds as such and to mesogenic or liquid crystalline mixtures comprising these compounds.

Abstract: The present invention relates to chiral dopants having a laterally alkylated phenyl unit of the general formula I: in which Q*, R, A, Z, V, W, X, Y and n are as defined in claim 1, to the use thereof as components in liquid-crystalline mixtures, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline mixtures according to the invention.