Merck Patent Gmbh

Mila Fischer

Peer Kirsch

Matthias Bremer

Elvira Montenegro

Melanie Klasen-Memmer

Atsutaka Manabe

Michael Junge

Michael Wittek

Ursula Patwal

Andreas Beyer

Erdal Durmaz

Norihiko Tanaka

Andreas Ruhl

Malgorzata Rillich

Susann Beck

Andreas Taugerbeck

Volker Meyer

Ties De Jong

Edward Plummer

Susann Gunst

Ewa Dominica Ptak

Paul Verbunt

Harald Lannert

Mathias Bremer

Norihito Tanaka

Michael Witteck

Liquid-crystalline media containing one or more mesogenic compounds, one or more chiral compounds, and one or more polymerizable mesogenic compounds, wherein the media exhibit a pitch of 0.55 &#x3bc;m or more and a clearing point of 80&#xb0; C. or more and wherein the one or more polymerizable mesogenic compounds are contained in an amount, based on the overall contents of the media, of 5% by weight or less, are suitable as modulation materials. Such modulation materials can be used in switching layers and window elements.

Liquid-crystalline medium for use in a switching element

The present invention relates to liquid-crystalline media comprising one or more mesogenic compounds of formula I as set forth hereinafter, wherein the one or more compounds of formula I are contained in the medium in an amount, based on the overall contents of the medium, of at least 15% by weight. The present invention further relates to a switching layer, a switching element and a window element containing the liquid-crystalline medium.

The present invention relates to liquid crystalline media comprising one or more benzothiadiazol derivatives of formula I, in which R, R, A, A, A, A, Z, Z, Z, Z, W, X, X, r and s have the meanings indicated in claim, to the use of such liquid crystal media for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows.

Liquid crystalline medium

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

Dithioalkylpyrrolopyrroles and the use thereof as dyes

The present invention relates to thiadiazoloquinoxaline derivatives of the formula I, in which R, R, A, A, A, A, Z, Z, Z, Z, W, X, X, r and s have the meanings indicated in Claim to processes and intermediates for the preparation thereof, to the use of the compounds of the formula I for optical, electro-optical and electronic purposes, in particular in liquid-crystal media and in devices for regulating the passage of energy from an outside space into an inside space, and to these LC media and the devices comprising these media.

Thiadiazoloquinoxaline derivatives

The application relates to a device for regulating the entry of light into a room, which comprises a switchable layer of specific design comprising a twisted nematic liquid-crystalline medium and a dichroic compound.

Device for regulating the entry of light

The present invention relates to mesogenic media and to electro-optical displays comprising these media as light modulation media. In particular, the electro-optical displays according to the present invention are displays, which are operated at a temperature, at which the mesogenic modulation media are in an optically isotropic phase, preferably in a blue phase.

Liquid crystal medium and liquid crystal display

An optical switching device comprising a polarisation layer and a switching layer which comprises a liquid-crystalline material and a dye compound. Use of the optical switching device for the regulation of the passage of light through an area element. A window element which has the optical switching device therein.

Optical switching device

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.

Liquid crystal material

The instant invention relates to mesogenic media exhibiting a blue phase, comprising one or both components selected from the two following components, components A and B, component A, comprising one or more compounds selected from the group of compounds of formula I-M, and component B, consisting of one or more compounds selected from the group of compounds of formula I-U, wherein the parameters are as specified in the text, preferably stabilized by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such displays.

The instant invention relates to mesogenic media comprising one or more compounds selected from the group of compounds of formulae M-I and M-II wherein the parameters are as specified in the text, preferably to mesogenic media showing a blue phase, preferably stabilized by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices.

The instant invention relates to mesogenic media exhibiting a blue phase, comprising one, two or more compounds of formula I-A wherein the parameters are as specified in the text, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such displays.

The instant invention relates to mesogenic media exhibiting a blue phase, comprising two or more components selected from the following components, components A to C, component A comprising one or more compounds selected from the group of compounds of formula I-T component B consisting of one or more compounds selected from the group of compounds of formula I-N component C consisting of one or more compounds selected from the group of compounds of formula I-E wherein the parameters are as specified in the text, preferably stabilized by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such displays.

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Muehltal, Germany

Mila Fischer