Merck Patent Gmbh

Clariant International Ltd

Hoechst Aktiengesellschaft

Clariant Finance (bvi) Limited

Aventis Research & Technologies Gmbh & Co Kg

Clariant Corporation

Merck Patent Gesellschaft

Hoechst Research & Technology Deutschland Gmbh & Co. Kg

Aventis Research & Technologies

Merck Patent Beschraenkter Haftung

Aventis Research & Technology Deutschland Gmbh & Co.kg

Hoechst Reasearch & Technology Deutschland Gmbh & Co. Kg

Hoescht Research & Technology Deutchland Gmbh & Co.

Clariant Financi (bvi) Limited

Aventis Reseach & Technologies Gmbh & Co. Kg

Barbara Hornung

Rainer Wingen

Wolfgang Schmidt

Javier Manero

Toshiaki Nonaka

Ayako Ogawa

Matthias Bremer

Detlef Pauluth

Melanie Klasen-Memmer

Dietmar Jungbauer

Hans-Rolf D&uuml;bal

Ayako Takeichi

Ji Li

Hans-Rolf Dübal

Michael Heckmeier

Gerd Heppke

Clarissa Weller

Kazuya Nagao

Michael Morr

Detlef Lotzsch

Li Ji

Melaine Klasen-Memmer

Hans-Rolf Duebal

Liquid crystal mixture comprising one or several compounds of formula (I) wherein R, R, R, R, R, R, M, M, X, A, and m are defined herein.

Liquid crystal mixture

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula I 

Liquid-crystal medium

Compounds of the formula (I) are described in which

Fluorinated phenanthrenes and their use in liquid-crystal mixtures

A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R, Rand have the meanings indicated in claim, is described. Also described is the use thereof for an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.

Liquid-crystalline medium

Compounds of the formula (I) in which R, R, p, q, G and X are each as defined in the description,

Fluorinated fused aromatics and their use in liquid-crystal mixtures

A compound of the formula (I) is described where Rand Rare defined in the specification and p=q=r=or 1 with p+q+r&#x2260;. The compound of formula (I) has high dielectric anisotropy, thermally stable, fast response time and high voltage holding ratio, which is used as a liquid crystal medium for the liquid-crystal displays such as ECB, in-plane-switching (IPS) and VA display mode.

Polyfluorinated fused aromatics and their use in liquid-crystal mixtures

Concerning the compound of the formula (I) 

Fluorinated xanthenes and use thereof in liquid-crystal mixtures

In the compound of the formula (I), where:

Fluorinated heterocycles and their use in liquid-crystal mixtures

Fluorinated five-membered ring compounds of the formula (I)R&#x2014;X&#x2014;(A&#x2014;M)&#x2014;(A&#x2014;M)&#x2014;A&#x2014;Y&#x2014;E &#x2003;&#x2003;(I)where E is a radical T&#x2014;Z&#x2014;Rcontaining a five-membered ring and, for example,

Five membered-ring compounds and utilization thereof in liquid crystal mixtures

Compounds of the general formula (I)where:

The invention relates to fluorinated aromatics of the formula (I)where

Fluorinated aromatic compounds and the use of the same in liquid crystal mixtures

The liquid-crystal switching or display device comprises a chiral smectic liquid-crystal mixture, where the ratio &#x394;/&#x398; of the angle between the rubbing direction and the smectic layer normal to the tilt angle in the liquid-crystal mixture is at least 0.41. Preferably, the liquid-crystal mixture has the phase sequence I-N-C and the tilt angle &#x398; at 25&#xb0; C. is between 19&#xb0; and 39&#xb0;.

Smectic liquid crystal high-contrast control or display device

Compounds of the formula (I)in which the parameters are as defined herein, are suitable for use in liquid-crystal media and liquid-crystal displays which contain these media.

Fluorinated naphthalenes, liquid-crystal mixtures comprising them, and liquid-crystal displays

Fluorinated polycycles and their use in liquid-crystal mixtures

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of negative dielectric anisotropy which comprises at least one compound of the formula Iin which Rand R, ring A, Z, a, Land Lare as defined in claim 1, and the use thereof for an active-matrix display based on the ECB effect.

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Hasselroth, Germany

Barbara Hornung