Search Patents
  • Liquid-crystalline medium and liquid crystal display
    Publication number: 20110001089
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I in which R0, X0 and L1-6 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Application
    Filed: February 18, 2009
    Publication date: January 6, 2011
    Applicant: Merck Patent Gesellschaft
    Inventors: Michael Wittek, Brigitte Schuler, Volker Reiffenrath, Mark Goebel, Markus Czanta
  • Liquid-crystalline medium
    Patent number: 8821757
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula (I), in which R0 has the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Lars Lietzau
  • Liquid-Crystalline Medium
    Publication number: 20080315157
    Abstract: 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) in which R11, R12 and Z1 have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display based on the ECB, FFS or IPS effect.
    Type: Application
    Filed: December 8, 2006
    Publication date: December 25, 2008
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Melanie Klasen-Memmer, Volker Reiffenrath
  • Liquid-crystalline medium
    Patent number: 7595101
    Abstract: Disclosed are a liquid-crystalline medium, which contains a compound of formula I and the use thereof for electro-optical purposes, in particular for TN, TFT, IPS or OCB displays.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: September 29, 2009
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Elvira Montenegro, Konstantin Schneider, Brigitte Schuler
  • Pyran derivatives containing an exocyclic double bond
    Patent number: 7314943
    Abstract: The invention relates to pyran derivatives of formula I and processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: January 1, 2008
    Assignee: Merck Patent GmbH
    Inventors: Eike Poetsch, Volker Meyer, Werner Binder, Michael Heckmeier, Georg Luessem, Stephan Guertler
  • STN liquid crystal display
    Publication number: 20030148043
    Abstract: The invention relates to supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angular dependences and to the novel nematic liquid-crystal mixtures employed therein, which are distinguished by the fact that they comprise at least one compound of the formula IA 1
    Type: Application
    Filed: December 23, 2002
    Publication date: August 7, 2003
    Applicant: Merck Patent GmbH
    Inventor: Harald Hirschmann
  • Liquid-crystalline medium
    Patent number: 7033652
    Abstract: Liquid-crystalline media comprising at least one compound of the formula I in which X, L1, L2 and L3 are as defined herein, are useful for use in electro-optical displays.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 25, 2006
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Martin Engel, Brigitte Schuler, Volker Reiffenrath
  • Electrooptical liquid crystal system
    Publication number: 20010016238
    Abstract: To improve switching times, especially at low temperatures, one or more reactive liquid crystalline compounds is added to a liquid crystal mixture used in an electroptical system.
    Type: Application
    Filed: December 29, 2000
    Publication date: August 23, 2001
    Applicant: Merck Patent GmbH
    Inventors: David Coates, Owain Llyr Parri, Simon Greenfield, Martin David Tillin, Mark John Goulding, Patrick Nolan
  • Liquid-crystalline medium
    Patent number: 7622165
    Abstract: Disclosed are a liquid-crystalline medium, which contains one or more compounds of formula I their use for electro-optical purposes, to displays containing this medium, and to novel LC compounds for use in LC media and displays.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: November 24, 2009
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Lars Lietzau
  • Liquid-crystalline medium
    Patent number: 7972664
    Abstract: Disclosed are a liquid-crystalline medium, which contains a compound of formula I and the use thereof for electro-optical purposes, in particular for TN, TFT, IPS or OCB displays.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: July 5, 2011
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Michael Wittek, Elvira Montenegro, Konstantin Schneider, Brigitte Schuler
  • Thiophene derivatives, and LC media containing same
    Publication number: 20110049427
    Abstract: The present invention relates to thiophene derivatives, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays comprising same.
    Type: Application
    Filed: March 30, 2009
    Publication date: March 3, 2011
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Axel Jansen, Detlef Pauluth, Harald Hirschmann, Markus Czanta
  • As-indacen derivatives
    Patent number: 7517471
    Abstract: The present invention relates to compounds of the formula I where X1, X2, R1, R2, A1, A2, Z1, Z2, m, n and rings B and B? are as defined in claim 1.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: April 14, 2009
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20100320420
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterised in that it comprises one or more compounds of the formula I in which R1, X1, L1-5 have the meanings indicated in Claim 1, and to the use thereof for electro-optical purposes, in particular TN monitor applications.
    Type: Application
    Filed: December 17, 2008
    Publication date: December 23, 2010
    Applicant: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Harald Hirschmann, Michael Wittek, Sabine Schoen
  • Mono-, oligo- and poly-3-(1,1-difluoroalkyl)thiophenes and their use as charge transport materials
    Publication number: 20030062509
    Abstract: Mono-, oligo- and polymers comprising one or more identical or different recurring units of formula I
    Type: Application
    Filed: July 24, 2002
    Publication date: April 3, 2003
    Applicant: Merck Patent GmbH
    Inventors: Martin Heeney, Louise Farrand, Mark Giles, Marcus Thompson, Steven Tierney, Maxim Shkunov, David Sparrowe, Iain McCulloch
  • Liquid-crystalline medium
    Patent number: 7790247
    Abstract: Disclosed are a liquid-crystalline medium, which contains one or more compounds of formula I their use for electro-optical purposes, to displays containing this medium, and to novel LC compounds for use in LC media and displays.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: September 7, 2010
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Lars Lietzau
  • Liquid-crystalline medium
    Patent number: 6685996
    Abstract: 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 I in which R, A1, Z1, Y and L are as defined in claim 1.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: February 3, 2004
    Assignee: Merck Patent GmbH
    Inventors: Kazuaki Tarumi, Brigitte Schuler, Eike Poetsch, Volker Reiffenrath, Yukiomi Tanaka
  • THIOPHENE DERIVATIVES, AND LC MEDIA COMPRISING SAME
    Publication number: 20120001123
    Abstract: The present invention relates to thiophene derivatives, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays comprising same.
    Type: Application
    Filed: February 3, 2010
    Publication date: January 5, 2012
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Axel Jansen, Detlef Pauluth, Harald Hirschmann, Markus Czanta
  • LIQUID CRYSTAL MEDIUM CONTAINING THIOPHENE DERIVATIVES
    Publication number: 20130119312
    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: Application
    Filed: July 1, 2011
    Publication date: May 16, 2013
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Michael Wittek, Brigitte Schuler, Axel Jansen
  • LIQUID-CRYSTALLINE MEDIUM AND LIQUID CRYSTAL DISPLAY
    Publication number: 20100108945
    Abstract: Disclosed are a liquid-crystalline medium based on a mixture of dielectrically negative polar compounds of each of formulae I and II and the use thereof in an electro-optical display, particularly in a display with passive matrix addressing, based on a VA, ECB, PALC, FFS or IPS effect, and such displays.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Masahiro IIJIMA, Nobuo KUBO
  • Matrix liquid crystal display
    Publication number: 20030207046
    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: Application
    Filed: March 10, 2003
    Publication date: November 6, 2003
    Applicant: 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