Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Alcan Systems Gmbh

Merck Patent Gesellschaft MIT Beschraenkter Haftung

Merck Patent Gesellschaft MIT Beschr&auml;nkter Haftung

Technische Universitat Darmstadt

Atsutaka Manabe

Detlef Pauluth

Volker Reiffenrath

Christian Jasper

Elvira Montenegro

Constanze Brocke

Dagmar Klass

Matthias Bremer

Michael Wittek

Brigitte Schuler

Lars Lietzau

Peer Kirsch

Mark Goebel

Renate Seeger

Eike Poetsch

Michael Heckmeier

Markus Czanta

Melanie Klasen-Memmer

Sebastian Hofmeyer

Sven Baran

Herbert Plach

Ulrich Heywang

Alexander Hahn

Rolf Jakoby

Elisabeth Meyer

Elena Kress

Felix Goelden

Joachim Krause

Masayoshi Suzuki

Harald Hirschmann

Marcus Reuter

Onur Hamza Karabey

Gerald Scholz

Martin Kraska

Kazuaki Tarumi

Andreas Taugerbeck

Rocco Fortte

Hubert Spreitzer

Michael Junge

Helmut Haensel

Axel Jansen

Volker Meyer

Martin Engel

Werner Binder

Dagmar Klement

Dmitry Ushakov

Georg Luessem

Mila Fischer

Erdal Durmaz

Sven Christian Laut

Nobuo Kubo

Beate Schneider

Gerald Unger

Ramin Tavakoli

Naoya Fujiwara

Kai Jaehrling

Rolf Prof Jakoby

Cecile Schott

New compounds and their mixtures enable the formation of the ferroelectric nematic liquid crystalline phase at ambient temperature. Compounds of the formula I are presented, in which the variable groups have the meanings indicated in claim. Liquid crystal media comprise at least one compound of the formula I.

Liquid crystal compounds

The new media exhibit a ferroelectric nematic phase preferably at ambient temperature. They preferably comprise one or more compounds selected from the group of compounds of formulae IA, IB and IC, in which the variable groups have the meanings indicated in the text and in the claims. Use of the media for providing ferroelectric nematic materials and a method of operation of an electro-optical device are presented. The media may be useful for energy-saving displays and electrical appliances.

Liquid crystalline medium and electro-optical device

The invention relates to a liquid-crystalline medium having a nematic phase comprising one or more compounds of formula X wherein the parameters have the meaning given in the text, 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 X for improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds, as well as to the compounds of formula X.

Liquid-crystalline medium and liquid-crystal display comprising the same and compounds

The present invention relates to a compound of the general formula I in which the occurring groups and parameters have the meanings indicated in claim, to the use thereof in liquid-crystalline or mesogenic media and to liquid-crystalline or mesogenic media comprising these derivatives.

Dibenzofuran and dibenzothiophene derivatives

The present invention relates to liquid-crystalline media comprising one or more compounds of formula DFS in which the groups and parameters occurring have the meanings indicated in claim, to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas. The present invention further relates to novel mesogenic compounds.

Liquid-crystalline medium

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 T  and the other parameters have the meanings given in the text,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 compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Thiophene compound, liquid-crystalline medium and liquid-crystal display comprising the same

A liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of each of formulae T and L in which the parameters have the meanings given in the claims and in the text. 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. Also, the compounds of formulae T and L and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Liquid-crystalline medium and liquid-crystal display comprising the same

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 YX 

The present invention relates to compounds of formula M in which Rhas the meaning indicated in claim, to liquid crystal mixture comprising the same, to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennae and very particularly for so-called tunable 'reflectarrays'.

Cyanopyrimidine derivatives

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 T  denotes and 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 compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.

A two-dimensional (2-D) beam steerable phased array antenna is presented comprising a continuously electronically steerable material including a tunable material or a variable dielectric material, preferred a liquid crystal material. A compact antenna architecture including a patch antenna array, tunable phase shifters, a feed network and a bias network is proposed. Similar to the LC display, the proposed antenna is fabricated by using automated manufacturing techniques and therefore the fabrication costs are reduced considerably.

Electronically steerable planar phase array antenna

The invention relates to a liquid-crystalline medium having a nematic phase comprising one or more compounds of formula B 

A liquid-crystalline media comprising  in which the parameters have the meaning indicated in claim, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.

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 Y in which the parameters have the meanings given in the text,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 Y for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

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  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.

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Bensheim, Germany

Atsutaka Manabe