Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft MIT

Merck Kgaa

Georg Lüssem

Peer Kirsch

Michael Heckmeier

Detlef Pauluth

Melanie Klasen-Memmer

Mark John Goulding

Eike Poetsch

Matthias Bremer

Kazuaki Tarumi

Kevin Adlem

Volker Meyer

Alexander Hahn

Werner Binder

Warren L Duffy

Volker Reiffenrath

David Coates

Joachim Krause

Sabine Schoen

Brigitte Schuler

Owain Llyr Parri

Andreas Taugerbeck

Achim Goetz

Mark Andrew Verrall

Stephen Christopher Kitson

Christian Hock

Dagmar Klement

Rolf Jakoby

Patrick Scheele

Peter Best

Carsten Weil

Stefan Müller

Warren Duffy

The present invention relates to switchable components for high-frequency technology, in particular microwave technology, which use liquid-crystalline dielectrics, to the liquid-crystal materials, to the use thereof, and to a process for the production of the components, for their operation and for improving their characteristics.

Components for high-frequency technology

The invention relates to an alignment layer comprising a polymerized liquid crystal material with homeotrophic orientation, to methods of its preparation, to polymerizable liquid crystal compositions and liquid crystal polymers used for the preparation of the alignment layer, to liquid crystal devices comprising the alignment layer, and to a method of controlling the electrooptical steepness of a liquid crystal display comprising at least one alignment layer by varying the surface anchoring energy of the alignment layer.

Homeotropic alignment layer

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 general formula I in which R, L, L, L, L, L, L, Z, Z, X, v and u are as defined in claim 1.

Liquid-crystalline medium

The invention relates to CFO-bridged cyclohexane derivatives, in particular compounds of formula (I), R1-(-A1-Z1-)k1-Q-CF2O-A2-(-Z3-A3-)K3-R2, wherein Q represents group (a); W, Wrepresent &#x2014;CH&#x2014; and/or &#x2014;O&#x2014; independendy from each other, X, X, X, Xrepresent H, F, &#x2014;CH&#x2014;CHF&#x2014;CHF and/or &#x2014;CFindependently from each other, provided that at least one substituent X, X, Xand/or Xdoes not represent H, Zrepresents a simple bond, &#x2014;CH&#x2014;CH&#x2014; or &#x2014;CF&#x2014;CF&#x2014;, m represents 0 or 1 and R, R, A, A, A, Z, Z, k1 and k3 have the meaning cited in the description. The invention further relates to liquid crystal substances such as optical and electro-optical display elements.

[object Object]

A tetrahydropyran derivative comprising at least three cyclic rings and one aromatic endgroup of the formula Aa process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.

Pyrans as liquid crystals

Tetrahydropyran derivatives having at least one ester group (&#x2014;CO&#x2014;O&#x2014;) and at least one group &#x2014;CN, &#x2014;NCS,&#x2014;F, &#x2014;Cl, &#x2014;OCHF, &#x2014;OCF, &#x2014;CF, &#x2014;OCHFCF, &#x2014;OCFCHFCF, SF, or &#x2014;OCFCF; a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.

The invention relates to 2,4'-substituted 6-cyclohexyl-trans-decalins of the general formula Iin which R, Rand Z are as defined in Claim, to the use thereof as components of liquid-crystalline media, and to a liquid-crystal display element and an electro-optical display element.

2,4'-Substituted 6-cyclohexyl-trans-decalines

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Ober-Ramstadt, Germany

Georg Lüssem