摘要:
A component for high-frequency technology or for the microwave range and millimeter wave range of the electromagnetic spectrum. The component contains a liquid-crystal compound of the formula I in which the parameters have the respective meanings given in the claims or in the text, or a liquid-crystal medium which itself comprises one or more compounds of this formula I. Also, the corresponding, novel liquid-crystal media, the use and preparation thereof, and the production and use of the components. The components are particularly suitable as phase shifters in the microwave and millimeter wave range, for microwave and millimeter wave array antennae and very particularly for so-called tuneable reflectarrays.
摘要:
The present invention relates to liquid-crystalline media comprising at least one compound of the formula I and at least one compound of the formula II or at least one compound of the formula I and at least one compound of the formula III or at least one compound of the formula II and at least one compound of the formula III or at least one compound of the formula I and at least one compound of the formula II and at least one compound of the formula 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.
摘要:
The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises a) a compound of the formula (I), b) one or more compounds of the formula (II) and c) one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4. The liquid-crystalline medium is useful in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.
摘要:
The instant invention relates to electro-optical switching elements and displays comprising them. In particular, it relates to electro-optical switching elements comprising one or more light conversion means capable to convert light (e.g. ambient light and/or light from a backlight system), wherein each of said light conversion means o is capable to convert the state of polarization of the light from non-polarized light either to linear polarized light or to circular polarized light and, at the same time, o optionally is capable to shift the wavelength of the light to longer values and—at least one of said conversion means o is capable to shift the wavelength of the light to longer values and—a liquid crystal material, which is capable of switching,—one or more means to polarize light, and—optionally a means for illumination such as e.g. a backlight.
摘要:
The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds of the formula IA (IA), in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain the media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, for phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennae and very particularly for so-called tuneable “reflectarrays”.
摘要:
The present invention relates to compounds containing at least three ring systems, at least one of which is a 2,6-naphthylene group, and two unsaturated bridging groups between the ring systems, and to the use of the compounds for high-frequency components, in particular antennae, especially for the gigahertz region. The liquid-crystalline media comprising these compounds serve, for example, for the phase shifting of microwaves for tuneable ‘phased-array’ antennae.
摘要:
The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises a) a compound of the formula (I) b) one or more compounds of the formula (II) and c) one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4), in which the parameters have the meanings indicated in Claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, displays of this type contain a liquid-crystalline medium of this type, and the use of the compound of the formula I for the stabilisation of a liquid-crystalline medium that comprises one or more compounds of the formula II and one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4).
摘要:
The present invention relates to bistolans of the formula I where one or more of the radicals L1 to L3 denote an Rx, where Rx denotes cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, and the other parameters are as defined in Claim 1. The invention also encompasses liquid-crystalline media which comprise the title compounds, to components for high-frequency technology which comprise these media, in particular phase shifters and microwave array antennae.
摘要:
The present invention relates to chemical compounds containing five or more benzene rings arranged in a linear manner and two bridging units between these rings, where at least one of these units represents a —CF2O— bridge. The invention additionally relates to liquid-crystalline media and to high-frequency components comprising these media, in particular antennae, especially for the gigahertz range.
摘要:
The present invention relates to liquid-crystalline media comprising at least one compound of the formula I and at least one compound of the formula II or at least one compound of the formula I and at least one compound of the formula III or at least one compound of the formula II and at least one compound of the formula III or at least one compound of the formula I and at least one compound of the formula II and at least one compound of the formula 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.