Search Patents
  • TN and STN liquid-crystal displays
    Publication number: 20030104143
    Abstract: The invention relates to TN and STN liquid-crystal displays and to the novel nematic liquid-crystal mixtures used therein, characterized in that they comprise one or more compounds of the formula I 1
    Type: Application
    Filed: June 27, 2002
    Publication date: June 5, 2003
    Applicant: Merck Patent GmbH
    Inventor: Juliane Suermann
  • Liquid-crystalline medium
    Publication number: 20030203129
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric aniostropy, characterized in that it comprises one or more compounds of the general formula I 1
    Type: Application
    Filed: April 4, 2003
    Publication date: October 30, 2003
    Applicant: MERCK PAPTENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Kazuaki Tarumi, Brigitte Schuler, Eike Poetsch, Volker Reiffenrath, Yukiomi Tanaka
  • Liquid crystal display
    Patent number: 8999459
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PSA (polymer sustained alignment) type, and to polymerizable compounds and LC media for use in PSA displays.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: April 7, 2015
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Melanie Klasen-Memmer, Matthias Bremer
  • Liquid-crystal display
    Patent number: 8778466
    Abstract: The present invention relates to a liquid-crystal display of the PSA (polymer sustained alignment) type, and to novel liquid-crystal media and novel polymerizable compounds for use in PSA displays.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: July 15, 2014
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck
  • Liquid-crystalline medium
    Patent number: 7455894
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds, containing one or more compounds of the formula I in which R, Y1, Y2 and X have the meanings indicated in Claim 1.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: November 25, 2008
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Elvira Montenegro
  • TN and STN liquid-crystal displays
    Publication number: 20020064607
    Abstract: The invention relates to TN and STN liquid-crystal displays and to the novel nematic liquid-crystal mixtures used therein, characterized in that they comprise one or more compounds of the formula I 1
    Type: Application
    Filed: June 19, 2001
    Publication date: May 30, 2002
    Applicant: Merck Patent GmbH
    Inventors: Harald Hirschmann, Martina Weidner, Sven Schupfer, Peer Kirsch
  • Liquid-crystalline medium
    Patent number: 7678432
    Abstract: The invention relates to a liquid-crystalline medium, characterized in that it comprises one or more compounds of the formula I in which R1, R2 and X1-12 have the meanings indicated in Claim 1.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: March 16, 2010
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Elvira Montenegro
  • Nematic liquid-crystal composition
    Patent number: 6174572
    Abstract: The invention relates to nematic liquid-crystal compositions comprising bisalkenyl compounds of the formula I and to their use in plasma-addressed LCDs.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: January 16, 2001
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Harald Hirschmann, Sven Sch{umlaut over (u)}pfer, Marcus Reuter
  • Liquid-crystalline medium
    Publication number: 20020093004
    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 1
    Type: Application
    Filed: July 2, 2001
    Publication date: July 18, 2002
    Applicant: Merck Patent Gesellschaft mitbeschrankter Haftung
    Inventors: Kazuaki Tarumi, Brigitte Schuler, Eike Poetsch, Volker Reiffenrath, Yukiomi Tanaka
  • Nematic liquid-crystal mixture, and displays containing same
    Patent number: 7220464
    Abstract: A nematic liquid-crystal mixture contains a compound of formula I in which R11 and R12 are as defined in the specification, and a liquid-crystal displays containing same.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: May 22, 2007
    Assignee: Merck Patent Gesellschaft
    Inventors: Harald Hirschmann, Volker Reiffenrath
  • Liquid-crystalline medium
    Publication number: 20030064172
    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 1
    Type: Application
    Filed: November 2, 2001
    Publication date: April 3, 2003
    Applicant: Merck Patent Gesellschaft mitbeschrankter Haftung
    Inventors: Kazuaki Tarumi, Brigitte Schuler, Eike Poetsch, Volker Reiffenrath, Yukiomi Tanaka
  • Liquid-crystal lens
    Patent number: 11473014
    Abstract: A LC lens and a liquid-crystal medium used in said LC lens, wherein the medium contains one or more compounds of each of formulae I and II
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: October 18, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Arnold (Jer-Wei) Chang, Roger (Chih-chieh) Chang, Ray (Kuang-Ting) Chou
  • Liquid-crystalline medium
    Patent number: 8017200
    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 17, 2010
    Date of Patent: September 13, 2011
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Elvira Montenegro, Konstantin Schneider, Brigitte Schuler
  • Liquid-crystal display
    Patent number: 8940375
    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 3, 2008
    Date of Patent: January 27, 2015
    Assignee: Merck Patent GmbH
    Inventors: Matthias Bremer, Georg Bernatz
  • Chiral compounds
    Patent number: 7771801
    Abstract: The invention relates to chiral compounds, methods of their preparation, and to their use in optical, electrooptical, electronic, semiconducting or luminescent components or devices, and in decorative, security, cosmetic or diagnostic applications.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 10, 2010
    Assignee: Merck Patent GmbH
    Inventor: Louise Diane Farrand
  • Chiral compounds
    Patent number: 7771800
    Abstract: The invention relates to chiral compounds, methods of their preparation, and to their use in optical, electrooptical, electronic, semiconducting or luminescent components or devices, and in decorative, security, cosmetic or diagnostic applications.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 10, 2010
    Assignee: Merck Patent GmbH
    Inventor: Louise Diane Farrand
  • Liquid-crystalline medium
    Patent number: 6613401
    Abstract: Liquid-crystalline media comprising one or more compounds of formula A and at least one compound of formula B are suitable for use in TN and STN displays.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: September 2, 2003
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Sven Schüpfer, Renate Graulich, Martina Weidner
  • Liquid crystalline medium
    Patent number: 7658978
    Abstract: The invention relates to a liquid crystalline medium containing one or more compounds of formula I, wherein R1 and R2 have the meanings described in claim 1, to its use for electrooptical purposes, and to displays containing this medium.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: February 9, 2010
    Assignee: Merck Patent Gesellschaft
    Inventors: Harald Hirschmann, Volker Reiffenrath
  • Liquid-crystalline medium and liquid-crystal display having high twist
    Patent number: 6858268
    Abstract: The present invention relates to a liquid-crystalline medium having high twist, to the use thereof for electro-optical purposes, and to displays containing this medium.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: February 22, 2005
    Assignee: Merck Patent GmbH
    Inventors: Juliane Suermann, Meike Krumwiede
  • Liquid-crystalline medium
    Patent number: 6544603
    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 formula I
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: April 8, 2003
    Assignee: Merck Patent GmbH
    Inventors: Kazuaki Tarumi, Brigitte Schuler, Eike Poetsch