Search Patents
  • 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
  • Cyclohexane derivatives and liquid-crystalline medium
    Patent number: 6551666
    Abstract: The invention relates to cyclohexane derivatives of the formula I in which n, m, p, R1, X1, X2, Z1, Z2, Z3, A1 A2 and Y are as defined above.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: April 22, 2003
    Assignee: Merck Patent Gesellschaft Mit
    Inventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
  • LIQUID-CRYSTALLINE MEDIUM AND HIGH-FREQUENCY COMPONENTS COMPRISING SAME
    Publication number: 20140217325
    Abstract: The present invention relates to liquid-crystalline media and to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas.
    Type: Application
    Filed: August 7, 2012
    Publication date: August 7, 2014
    Applicant: MERCK PATENT GMBH
    Inventors: Atsutaka Manabe, Dagmar Klass
  • 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
  • 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
  • Liquid-crystalline medium
    Publication number: 20020027217
    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: April 13, 2001
    Publication date: March 7, 2002
    Applicant: Merck Patent Gesellschaft mit Beschrankt Patents
    Inventors: Georg Lussem, Dagmar Klement, Christian Hock, Detlef Pauluth, Matthias Bremer, Joachim Krause
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20120228549
    Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALO, FFS or IPS effect.
    Type: Application
    Filed: May 22, 2012
    Publication date: September 13, 2012
    Applicant: MERCK PATENT GMBH
    Inventors: Melanie KLASEN-MEMMER, Matthias BREMER
  • 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
  • Liquid-crystalline medium
    Patent number: 7763329
    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: July 30, 2009
    Date of Patent: July 27, 2010
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Michael Wittek, Elvira Montenegro, Konstantin Schneider, Brigitte Schuler
  • 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: 6861107
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of compounds of negative dielectric anisotropy comprising one or more polymerizable compounds, and to the use thereof for electro-optical purposes, and to displays containing this medium.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: March 1, 2005
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Dagmar Klement, Matthias Bremer
  • 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 CRYSTAL MEDIUM AND HIGH-FREQUENCY COMPONENTS COMPRISING SAME
    Publication number: 20140239227
    Abstract: The present invention relates to liquid crystal media and to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas.
    Type: Application
    Filed: September 7, 2012
    Publication date: August 28, 2014
    Applicant: MERCK PATENT GMBH
    Inventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass
  • 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
  • Liquid-crystalline medium
    Patent number: 8486298
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I in which R0 and X0 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: July 16, 2013
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Christian Hock, Martina Weidner, Volker Reiffenrath
  • Liquid-crystalline medium, compounds, and high-frequency components
    Patent number: 10858587
    Abstract: Liquid-crystalline media containing one or more compounds of formulae I-1, I-2 and/or I-3 and one or more compounds of formulae II and/or III and components containing these media for high-frequency technology, in particular phase shifters and microwave array antennas.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: December 8, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass
  • Liquid crystal medium
    Patent number: 7582338
    Abstract: Discloses are liquid crystal medium based on a mixture of polar compounds, the use thereof for electro-optical purposes, and displays containing the medium.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 1, 2009
    Assignees: Merck Patent Gesellschaft mit beschrankter Haftung, Sharp Corporation
    Inventors: Hideo Ichinose, Yuko Arai, Takanori Takeda, Tsuyoshi Okazaki, Toshihiro Matsumoto, Masahiro Shimizu, Takashi Katayama
  • Liquid-crystalline mixtures
    Patent number: 6821582
    Abstract: A liquid-crystalline mixture that contains one or more compounds of each of the formulae IA, IB and IC and to the use thereof in TN, STN and IPS displays.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: November 23, 2004
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Volker Reiffenrath, Marcus Reuter, Sabine Schoen, Sven Schüpfer, Clarissa Weller
  • 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
  • Liquid crystal medium
    Patent number: 9487702
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in an LC display, especially in an LC display of the PSA (“polymer sustained alignment”) type, and to an LC display comprising the LC medium.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: November 8, 2016
    Assignee: MERCK PATENT GMBH
    Inventors: Eveline Baron, Julian Vogt, Qiong Tong, Stephan Derow