Search Patents
  • Polymerisable compounds and the use thereof in liquid-crystal displays
    Patent number: 10550327
    Abstract: Polymerisable compounds and processes and intermediates for the preparation thereof. Also liquid-crystal (LC) media comprising the polymerisable compounds, and the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the PSA (“polymer sustained alignment”) type.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: February 4, 2020
    Assignee: Merck Patent GmbH
    Inventors: Martin Engel, Andreas Taugerbeck, Constanze Brocke, Helmut Haensel, Stephan Derow, Julian Vogt
  • Biaxial film
    Patent number: 7527833
    Abstract: The invention relates to an optically biaxial film with cholesteric structure, methods and materials for its preparation, its use as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial retardation film.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: May 5, 2009
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Kim Slaney, Mark Verrall, Owain Parri, Karl Skjonnemand, Tara Perrett
  • Benzochromene derivatives
    Patent number: 7326447
    Abstract: The present invention relates to benzochromene derivatives of the formula I in which the various parameters are as defined in the text, and to liquid-crystal media which comprise these compounds, and to the use of the media in electro-optical displays, in particular in VAN LCDs.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: February 5, 2008
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Andreas Taugerbeck, Melanie Klasen-Memmer
  • Liquid-crystal display
    Patent number: 8313669
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to polymerizable compounds and LC media for use in PS (polymer stabilized) and PSA displays.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: November 20, 2012
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Georg Bernatz, Andreas Taugerbeck
  • Liquid crystal medium containing thiophene derivatives
    Patent number: 8906261
    Abstract: The present invention relates to liquid-crystalline media (LC media) comprising thiophene derivatives and to liquid-crystal displays (LC displays) containing these LC media. The media have high optical anisotropy and preferably have a content of thiophene derivatives of 25% by weight or more.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: December 9, 2014
    Assignee: MERCK PATENT GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Axel Jansen
  • Matrix liquid crystal display
    Patent number: 6562419
    Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: May 13, 2003
    Assignee: MERCK Patent Gesellschaft mit beschrankter Haftung
    Inventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
  • Alkynyl-tolanes, liquid-crystal mixtures containing them and components for high-frequency technology
    Patent number: 10099975
    Abstract: Compounds of formula I their use in liquid-crystalline media, for example, for the phase shifting of microwaves for tunable phased-array antennae, and their use for high-frequency components, in particular antennae, especially for the gigahertz range.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: October 16, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Christian Jasper, Constanze Brocke, Detlef Pauluth, Volker Reiffenrath, Atsutaka Manabe
  • Optical compensator and liquid crystal display l
    Patent number: 7169448
    Abstract: The invention relates to an optical compensator for liquid crystal displays comprising at least one O plate retarder, and at least one twisted A plate retarder with a twist angle ? of more than 90°, and further relates to a liquid crystal display comprising such a compensator.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: January 30, 2007
    Assignee: Merck Patent GmbH
    Inventors: David Coates, Owain Llyr Parri, Mark Verrall, Peter Le Masurier
  • Liquid-crystal composition, methods of adjusting the resistance, and substituted phenols
    Publication number: 20020084444
    Abstract: 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.
    Type: Application
    Filed: July 19, 2001
    Publication date: July 4, 2002
    Applicant: Merck Patent Gesellschaft Mit
    Inventors: Michael Darius, Volker Reiffenrath, Kazuaki Tarumi, Bernhard Rieger, Michael Heckmeier, Marcus Reuter, Peer Kirsch
  • Polymerizable compounds and liquid crystal media
    Patent number: 9255223
    Abstract: The invention relates to 1,1-disubstituted cyclohexane derivatives containing one or more polymerizable groups, and to liquid-crystalline media comprising at least one compound of the formula I. At least one of the polymerizable groups is located at the geminally substituted position of the cyclohexane ring. The compounds are suitable for the stabilization of liquid-crystalline phases. Examples of polymer-stabilized blue phases are indicated.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: February 9, 2016
    Assignee: Merck Patent GmbH
    Inventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
  • Polymerizable compounds
    Patent number: 7807068
    Abstract: The present invention relates to novel polymerizable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (polymer-stabilized) and PSA (polymer-sustained alignment) type.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 5, 2010
    Assignee: Merck Patent Gesellschaft
    Inventors: Matthias Bremer, Achim Goetz, Stephan Derow
  • Liquid-crystal display
    Patent number: 9005721
    Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: April 14, 2015
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • Liquid-crystal medium and electro-optical display containing same
    Patent number: 7314653
    Abstract: Disclosed are nematic liquid-crystal media which have an initial current density of 0.05 ?A/cm2 or less and a threshold voltage of 1.0 V or less and their use in liquid-crystal displays, preferably TN or STN displays.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: January 1, 2008
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Harald Hirschmann, Sabine Schoen
  • POLYMERIZABLE COMPOUNDS AND THEIR USE IN LIQUID CRYSTAL MEDIA AND LIQUID CRYSTAL DISPLAYS
    Publication number: 20140125938
    Abstract: The present invention relates to polymerizable compounds, liquid-crystalline media containing the compounds, in particular liquid crystal (LC) media and LC displays having a polymer-stabilized blue phase, and also LC media for LC displays of the PS or PSA type (“polymer-sustained” or “polymer-sustained alignment”).
    Type: Application
    Filed: May 15, 2012
    Publication date: May 8, 2014
    Applicant: MERCK PATENT GMBH
    Inventors: Michael Wittek, Norihiko Tanaka, Andreas Taugerbeck
  • Liquid-crystalline medium
    Patent number: 7754103
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I and one or more compounds of the formula IA in which R1, R1A, X, XA, L1-7, A1, Z1 and n have the meanings indicated in claim 1.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: July 13, 2010
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Elvira Montenegro, Gerald Scholz, Detlef Pauluth
  • Cyanopyridone derivatives as liquid crystals
    Patent number: 7442475
    Abstract: The invention relates to cyanopyridone derivatives, to their use in liquid crystal media, liquid crystal devices, anisotropic polymers, optical, electrooptical, decorative, security, cosmetic, diagnostic, pharmaceutic, electric, electronic, charge transport, semiconductor, optical recording, electroluminescent, photoconductor and electrophotographic applications, and to liquid crystal media, polymers and displays comprising them.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: October 28, 2008
    Assignee: Merck Patent GmbH
    Inventors: Louise Diane Farrand, Michael Heckmeier
  • Electro-rheological fluid and haptic device
    Patent number: 10160930
    Abstract: The present invention relates to an electro-rheological fluid comprising particles of at least one inorganic or organic material suspended in a polar liquid crystalline medium, the use of such electro-rheological fluid in an haptic device, an haptic device itself, a method of the production of such haptic device and the use of such haptic device in electro-optical devices.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: December 25, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Simon Siemianowski, Rachel Tuffin, Roger Kemp, Ian Charles Sage
  • Liquid-crystalline medium
    Patent number: 10662377
    Abstract: The invention relates to a liquid crystalline medium, characterised in that it comprises one or more compounds of formula A and one or more compounds of formula II wherein the parameters have the meaning indicated in claim 1, and to high-frequency components comprising the same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular microwave phased-array antennas.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 26, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Constanze Brocke, Atsutaka Manabe, Michael Wittek, Renate Seeger
  • Polymerisable liquid crystal material and polymerised liquid crystal film
    Patent number: 10106742
    Abstract: The invention relates to a polymer film comprising a polymerized liquid crystal (LC) material with improved adhesion to a substrate, to methods for preparing such a polymer film, to a polymerizable LC material used for the preparation of such a polymer film, and to the use of the polymer film and said polymerizable LC material for optical, electrooptical, decorative or security uses and devices.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: October 23, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Hyun-Jin Yoon, Yong-Kuk Yun, Heui-Seok Jin, Yong-Hyun Choi
  • Birefringent polymer film with negative optical dispersion
    Patent number: 8289494
    Abstract: The invention relates to a polymer film having negative optical dispersion, novel polymerisable compounds and liquid crystal (LC) materials for its preparation, and the use of the polymer film and novel compounds and materials in optical, electrooptical, electronic, semiconducting or luminescent components or devices.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: October 16, 2012
    Assignee: Merck Patent GmbH
    Inventors: Owain Llyr Parri, Kevin Adlem, Karl Skjonnemand, David Wilkes