Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft

Christian Hock

Volker Reiffenrath

Brigitte Schuler

Michael Heckmeier

Harald Hirschmann

Georg Luessem

Izumi Saito

Peer Kirsch

Markus Czanta

Eike Poetsch

Matthias Bremer

Detlef Pauluth

Sabine Schoen

Michael Wittek

Achim Goetz

Marcus Reuter

Sayuri Ogiri

Joachim Krause

Melanie Klasen-Memmer

Rocco Fortte

Axel Jansen

Shinji Nakajima

Martina Windhorst

Andreas Pohle

Lars Lietzau

Alexander Hahn

Volker Meyer

Dagmar Klement

Martina Weidner

Georg Lüssem

Renate Bender

Georg L&uuml;ssem

Renate Seeger

Mark Goebel

Brigette Schuler

Kai Jaehrling

Herald Hirschmann

The present invention relates to a liquid-crystalline medium (LC medium), to the use thereof for electro-optical purposes, and to LC displays containing this medium.

Liquid-crystal medium

Liquid-crystalline medium

The invention relates to dielectrically positive liquid crystalline media comprising a compound of formula I wherein the parameters have the meaning given in claimand to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and IPS mode displays.

Liquid crystalline medium

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I and one or more compounds selected from the compounds of the formulae IA and IB in which R, R, L, Xand Xhave the meanings indicated in claim

The invention relates to compounds of the formula I in which

Liquid crystal medium

The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I 

The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I in which the parameters have the meaning indicated in the specification, and optionally one or more compounds selected from the group of the compounds of the formulae II and III in which the parameters have the meaning indicated in the specification, and optionally one or more compounds of the formula IV in which the parameters have the meaning indicated in the specification, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.

Liquid-crystalline medium and liquid-crystal display

A dielectrically positive liquid crystalline media comprising: 

Liquid crystalline medium and liquid crystal display

The invention relates to liquid-crystalline compounds of the formula (I) in which R, R, A, A, A, A, Z, Z, Z, a, b and c have the meanings indicated in Claimand to liquid-crystalline media comprising at least one compound of the (I) and to electro-optical displays containing a liquid-crystalline medium of this type.

Liquid-crystalline compounds

Described are media for liquid-crystal applications where the media include a mixture of polar compounds of positive dielectric anisotropy. The mixtures include one or more compounds of the formula I in which: Ris a halogenated or unsubstituted alkyl or alkoxy radical having from 1 to 15 carbon atoms, where one or more CHgroups in these radicals are optionally, independently of one another, replaced by &#x2014;C&#x2261;C&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;O&#x2014;, &#x2014;CO&#x2014;O&#x2014;or &#x2014;O&#x2014;CO&#x2014; in such a way that O atoms are not linked directly to one another; X is F, Cl, CN, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical having 1 to 6 carbon atoms; and Land Lare each, independently of one another, H or F. It being provided that the media exhibit a TN threshold of below 1.3V.

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.

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula Iin which R, Land Lare as defined in claim.

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula Iin which R, Land Lare as defined in claim

A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which contains one or more compounds of the formula Iin which

Growing community of inventors

Mainaschaff, Germany

Christian Hock