Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Renate Bender

Markus Czanta

Brigitte Schuler

Michael Wittek

Andreas Taugerbeck

Volker Reiffenrath

Harald Hirschmann

Graziano Archetti

Lars Lietzau

Martina Weidner

Peer Kirsch

Rocco Fortte

Izumi Saito

Christian Hock

Ming-Chou Wu

Fortte Rocco

The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy comprising self-alignment additives (SAMs) with an at least one bifunctional or polyfunctional anchor group, which effects the homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the liquid-crystalline medium (LC medium) without conventional imide alignment layers. The LC media may be supplemented by a polymerizable or polymerized component, which serves for stabilization of the alignment, for adjustment of the tilt angle and/or as passivation layer.

Liquid-crystal displays and liquid-crystalline media having homeotropic alignment

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having a negative dielectric anisotropy which contains at least one self-aligning additive, especially at least one additive selected from the group of the compounds of the formula IA to ID in which

Liquid-crystalline medium

The present invention relates to liquid-crystal displays (LC displays) with polymer-stabilized, homeotropic (vertical) alignment of the liquid-crystalline medium (LC medium) without conventional imide alignment layers. The LC medium according to the invention comprises particles having a mass of at least 450 Da which have been functionalized by a polar, organic anchor group.

Liquid crystalline media and liquid crystal displays with a polymer-stabilized homeotropic orientation

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

The present invention relates to dielectrically positive liquid-crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of the formula I in which the parameters have the meaning indicated in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of great than 3, and optionally a dielectrically neutral component, component C, and to liquid-crystal displays containing these media, especially active-matrix displays and in particular TN, IPS and FFS displays.

Liquid crystalline medium and liquid crystal display

The instant invention relates to dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula I wherein the parameters have the meaning given in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3 and optionally a dielectric neutral component, component C, as well as to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and to IPS displays.

Disclosed are a liquid-crystalline medium, the use thereof for electro-optical purposes, and displays containing this medium, characterised in that the medium contains one or more compounds of formula I and one or more compounds selected from compounds of formulae K-1 to K-11, containing a CFO bridge.

Disclosed are liquid-crystalline medium, use thereof for electro-optical purposes, and displays containing this medium, wherein the medium contains one or more compounds of formula I and one or more compounds of formulae K-1 to K-11, containing a CFO bridge.

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Darmstadt, Germany

Renate Bender