Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gmbh

Merck Patent Gesellschaft MIT

Merck Patent Gesellschaft

Merck Patent Gesellschaft MIT Beschr&auml;nkter Haftung

Sharp Kabushiki Kaisha Corporation

Merck Patent Gesellschaft MIT Beschraenkter Haftung

Merck Kgaa

Merck Gmbh

Kazuaki Tarumi

Brigitte Schuler

Volker Reiffenrath

Peer Kirsch

Eike Poetsch

Joachim Krause

Michael Heckmeier

Matthias Bremer

Detlef Pauluth

Sabine Schoen

Andreas Beyer

Ekkehard Bartmann

Yukiomi Tanaka

Melanie Klasen-Memmer

Marcus Reuter

Michael Schwarz

Hideo Ichinose

Michael Kompter

Axel Pausch

Bernhard Rieger

Hiroshi Numata

Akiko Takashima

Andreas Tangerbeck

Yasuyoshi Namiki

Anja Huth

Andreas Wachtler

Andreas Ruhl

Georg Lüssem

Michael Darius

David Coates

Georg Weber

Yuichi Inoue

Yohei Nakanishi

Kazutaka Hanaoka

Herbert Plach

Atsutaka Manabe

Owain Llyr Parri

Andreas Taugerbeck

Simon Greenfield

Hubert Spreitzer

Mark John Goulding

Michael Junge

Masakazu Shibasaki

Ulrich Finkenzeller

Izumi Saito

Mark Andrew Verrall

Stephen Christopher Kitson

Axel Jansen

Shinji Nakajima

Werner Binder

Dagmar Klement

Richard Harding

Heike Kniel

Clarissa Weller

Georg L&uuml;ssem

Akihiro Kojima

Yuka Ikedo

Peter Mackert

Melanie Klasen

Rolf Sander

Harald Lannert

Atsusi Sawada

The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (t) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (t/&#x394;n) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.

Liquid crystal medium and electrooptical display containing same

The invention relates to an electro-optical liquid-crystal display which contains, as dielectric, a liquid-crystalline medium having negative dielectric anisotropy and includes a backlight which essentially only emits light having a wavelength of 400 nm or more or has, between the liquid-crystal layer and the backlight, a cut-off filter which essentially only allows light having a wavelength of 420 nm or more to pass through. In particular, the liquid-crystalline medium comprises in which the parameters have the meanings indicated in claim, and a further (second) dielectrically negative component (component B). Very particular preference is given to the use of the liquid-crystalline media in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PSVA, FFS or IPS effect and very particularly in displays which use an LED backlight.

Liquid crystal display and liquid crystalline medium

The invention relates to a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which comprises at least one compound selected from the group of the compounds of the formulae IA, IB and IC in which

Liquid-crystal medium

The invention relates to chiral compounds of formula (I) R&#x2014;X-(A-Z)-G-(Z-A)-X&#x2014;R, wherein R, R, X, X, A, A, Z, Z, G, m and n have the meaning given in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I).

Chiral compounds II

A liquid crystal display device produced through the steps of injecting a polymerizable monomer-containing liquid crystal composition between two substrates and, while applying a voltage between opposing transparent electrodes of the substrates, polymerizing the monomer, wherein the polymerizable monomer contained in the liquid crystal composition has one or more ring or condensed ring structures and functional groups bonded directly to the ring or condensed ring structure. The monomer is preferably represented by the following general formula:P-A-(Z-A)-Pwherein Pand Pare acrylates or the like, Aand Aare 1,4-phenylenes or the like, Zis &#x2014;COO&#x2014; or the like, and n is 0 to 2.

Liquid crystal display device

The present invention relates to liquid-crystal mixtures having specific resistance values, comprising acidic compounds. The present invention furthermore relates to liquid-crystal displays containing these liquid-crystal mixtures. The invention furthermore relates to compounds of the formula I, in which the parameters are as defined in the text, to their preparation, and to their use for achieving certain specific resistance values in liquid-crystal mixtures. The application also relates to a method of adjusting the specific resistance of liquid-crystal mixtures using acidic compounds.

Liquid-crystal composition, methods of adjusting the resistance, and substituted phenols

The invention relates to liquid crystal compounds of formula (I), where X, X, X, Z, Z, L, L, L, L, L, L, L, L, L, L, Land a have the meanings given in claim, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium 

Liquid crystal compounds

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

A liquid-crystalline medium containing a mixture of polar compounds of positive dielectric anisotropy. The mixture contains one or more compounds of formula I in which: R is H, an alkyl or alkenyl radical having 1 to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CFor at least monosubstituted by halogen, where one or more CHgroups in these radicals are optionally, in each case independently of one another, replaced by &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CO&#x2014;, &#x2014;CO&#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014; or &#x2014;O&#x2014;CO&#x2014;O in such a way that O atoms are not linked directly to one another; is a trans-1,4-cyclohexylene ring, in which one or two CHgroups are optionally replaced by &#x2014;O&#x2014; and/or &#x2014;S&#x2014;, or a cyclohexenylene ring; Y is halogenated alkyl, halogenated alkenyl, halogenated alkoxy or halogenated alkenyloxy having 1 to 6 carbon atoms; Z is &#x2014;OCH&#x2014;, &#x2014;CHCH&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;CFO&#x2014;, &#x2014;OCF&#x2014;, &#x2014;CF&#x2014; or a single bond; and n is 1 or 2. And the mixture contains one or more dioxane compounds of the following formula wherein Ris n-alkyl, oxoalkyl, fluoroalkyl or alkenyl, in each case having 1 to 7 carbon atoms; and Xis F, Cl, halogenated alkyl, alkenyl or alkoxy having 1 to 6 carbon atoms.

Liquid-crystalline medium

The invention relates to chiral compounds of formula (I) wherein R, R, A, A, X, X, Zand m have the meaning give in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I).

Chiral compounds 1

The invention relates to chiral compounds of formula (I) wherein Y, Y, Y, Y, X, X, Xand Xhave the meaning given in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I) 

Chiral compounds III

A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which medium exhibits a birefringence value of &#x2266;0.065 and includes one or more compounds of formula Iaand at least one compound of the formula Xc or Xd:in which R, alkyl, alkenyl and alkenyl* are as defined in claim 1.

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula Iin which R, A, Z, Y and L are as defined in claim 1.

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]

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which medium comprises one or more compounds the general formula Iaand one or more compounds selected from the group consisting of compounds of the formula III and V to VIII:The notations r, R, R, X, Zand Yare defined herein.

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Seeheim, Germany

Kazuaki Tarumi