Abstract: The present invention relates to modulation elements for electromagnetic radiation and to modulation devices and systems comprising these devices, such as e.g. television screens and computer monitors, as well as to micrometer wave components. The modulation elements according to the invention comprise a mesogenic modulation medium with a dielectric anisotropy, which shows two or more distinct transitions upon application of an electric field. The mesogenic modulation media used in the modulation elements for electromagnetic radiation are also a subject of the present invention.

Abstract: The present invention relates to modulation elements for electromagnetic radiation and to modulation devices and systems comprising these devices, such as e.g. television screens and computer monitors, as well as to micrometre wave components. The modulation elements according to the invention comprise a mesogenic modulation medium with a dielectric anisotropy, which shows two or more distinct transitions upon application of an electric field. The mesogenic modulation media used in the modulation elements for electromagnetic radiation are also a subject of the present invention.

Abstract: The invention relates to polymerisable monocyclic compounds, their use in liquid crystal mixtures, polymers and polymer films, and the use of the compounds, mixtures, polymers and polymer films in optical, electrooptical and electronic devices, for decorative and security applications.

Abstract: The invention relates to a liquid crystalline medium characterized by containing one or more compounds of general formula (I) and one or more compounds of formula (II), wherein R1, R2, R3, R4 and c have the meanings as cited in Claim No. 1.

Abstract: The invention relates to a liquid crystalline medium characterized by containing one or more compounds of general formula (I) and one or more compounds of formula (II), wherein R1, R2, R3, R4 and c have the meanings as cited in Claim No. 1.

Abstract: The invention relates to a liquid crystalline medium characterized by containing one or more compounds of general formula (I) and one or more compounds of formula (II), wherein R1, R2, R3, R4 and c have the meanings as cited in claim No. 1.

Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of compounds of negative dielectric anisotropy comprising one or more polymerizable compounds, and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, a, b and c are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.

Abstract: The invention relates to a liquid crystalline medium characterized by containing one or more compounds of general formula (I) and one or more compounds of formula (II), wherein R1, R2, R3, R4 and c have the meanings as cited in Claim No. 1.

Abstract: The invention relates to liquid-crystalline compounds of the formula I 1

Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of compounds of negative dielectric anisotropy comprising one or more polymerizable compounds, and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I and one or more compounds of the formula IA in which are as defined herein, is suitable for use in MLC, TN and STN displays.

Abstract: A liquid-crystal medium comprising a) at least one compound of the formula I and b) at least one compound of the formula II wherein R11, R12, R21, R22, A1, A21, Z21, Z22, L21, L22 and I are as defined herein are suitable for use in ECB, VAN, IPS, GH and ASM-PA LCD displays.

Abstract: Disclosed is a tetracyclic compound of the formula I in which R1, R2 are each, independently of one another, an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF3, or monosubstituted by halogen. One or more CH2 groups in these radicals may also, in each case independently of one another be replaced by —O—, —S—, —CO—, —CO—O—, —O—CO— or —O—CO—O— such that the O atoms are not linked directly to one another. Z is —OCF2—, —CF2O— or a single bond. L1, L2, L3, and L4 are each, independently of one another, H or F. m is 1 or 2. Similar compounds, as well as liquid-crystalline media having these compounds, are also disclosed.

Abstract: The invention relates to polymerisable monocyclic compounds, their use in liquid crystal mixtures, polymers and polymer films, and the use of the compounds, mixtures, polymers and polymer films in optical, electrooptical and electronic devices, for decorative and security applications.

Abstract: Disclosed is a tetracyclic compound of the formula I 1

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R1 and R2 are as defined herein.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R1 is an alkoxy group having up to 12 carbon atoms.

Abstract: The invention relates to a liquid-crystalline medium one or more compounds of the general formula IA and one or more compounds of the formula IB R, R*, R**, z, L and Y are defined herein.

Abstract: A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1