Search Patents
  • 4,6-difluorodibenzothiophene derivatives
    Patent number: 9512102
    Abstract: 4,6-difluorodibenzothiophene compounds of formula I the preparation thereof, the use thereof as components in liquid-crystalline media and electro-optical display elements which contain the liquid-crystalline media.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: December 6, 2016
    Assignee: MERCK PATENT GMBH
    Inventors: Volker Reiffenrath, Harald Hirschmann
  • Liquid-crystalline mixtures
    Publication number: 20030127629
    Abstract: A liquid-crystalline mixture that contains one or more compounds of each of the formulae IA, IB and IC 1
    Type: Application
    Filed: July 26, 2002
    Publication date: July 10, 2003
    Applicant: Merck Patent GmbH
    Inventors: Harald Hirschmann, Volker Reiffenrath, Marcus Reuter, Sabine Schoen, Sven Schupfer, Clarissa Weller
  • Liquid-crystal medium, and electro-optical liquid-crystal display
    Publication number: 20020104983
    Abstract: The present invention relates to liquid-crystalline media which comprise at least one compound of the formula I and at least one compound of the formula II 1
    Type: Application
    Filed: October 29, 2001
    Publication date: August 8, 2002
    Applicant: MERCK PATENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Juliane Suermann, Bernhard Rieger
  • Liquid-crystalline medium
    Publication number: 20030209691
    Abstract: The invention relates to a liquid-crystalline medium which is characterized in that it comprises one or more compounds of the formula A 1
    Type: Application
    Filed: January 28, 2003
    Publication date: November 13, 2003
    Applicant: MERCK PATENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Harald Hirschmann, Dagmar Zimmermann, Ursula Patwal, Antje Muhlfeld, Sabine Schoen, Martina Weidner
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20140110631
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 and R2 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Volker REIFFENRATH
  • Dithioalkylpyrrolopyrroles and the use thereof as dyes
    Patent number: 10868257
    Abstract: Novel dithiopyrrolopyrrole derivatives having dichroic properties which have very high photostability in solution in a liquid-crystalline host are proposed.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 15, 2020
    Assignee: Merck Patent GmbH
    Inventors: Peer Kirsch, Susann Beck, Michael Junge, Ursula Patwal, Mila Fischer
  • Liquid-crystalline medium
    Publication number: 20020003226
    Abstract: 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: March 23, 2001
    Publication date: January 10, 2002
    Applicant: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Peer Kirsch, Eike Poetsch
  • Liquid Crystal Display
    Publication number: 20100309423
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilised) or PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PS (polymer stabilised) and PSA displays.
    Type: Application
    Filed: August 4, 2008
    Publication date: December 9, 2010
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Georg Bernatz, Adreas Taugerbeck
  • LIQUID-CRYSTALLINE MEDIUM AND LIQUID-CRYSTAL DISPLAY HAVING HIGH TWIST
    Publication number: 20110315924
    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: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: MERCK PATENT GmbH mit beschraenkter Haftung
    Inventors: Akihiro Kojima, Fumio Shimano
  • Liquid crystalline medium
    Publication number: 20020033473
    Abstract: The invention relates to a liquid-crystalline medium of positive dielectric anisotropy which comprises at least one mesogenic compound and at least one compound of the formula I 1
    Type: Application
    Filed: May 24, 2001
    Publication date: March 21, 2002
    Applicant: MERCK PATENT GESELLSCHAFT MIT
    Inventors: Michael Heckmeier, Peer Kirsch, Matthias Bremer, Detlef Pauluth, Sabine Schoen
  • Nematic liquid-crystal composition
    Patent number: 6890606
    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: October 15, 2002
    Date of Patent: May 10, 2005
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Sven Schupfer, Marcus Reuter
  • 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: 20030207047
    Abstract: 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: March 28, 2003
    Publication date: November 6, 2003
    Applicant: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Peer Kirsch, Eike Poetsch
  • Liquid-crystalline medium
    Publication number: 20040016905
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1
    Type: Application
    Filed: May 27, 2003
    Publication date: January 29, 2004
    Applicant: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid crystal medium and liquid crystal display
    Patent number: 9914877
    Abstract: The present invention relates to a liquid crystal panel, a liquid crystal display device and to a liquid crystal medium having a negative dielectric anisotropy ??.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: March 13, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Eun-Kyu Lee, Seung-Eun Lee, Dong-Mee Song
  • Liquid crystalline medium and liquid crystal display
    Publication number: 20030155552
    Abstract: Liquid crystalline media comprising a dielectrically positive component, component A, containing dielectrically positive compounds, comprising one or more compounds of formula I and one or more compounds of formula II 1
    Type: Application
    Filed: October 23, 2002
    Publication date: August 21, 2003
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Elena Kress, Volker Reiffenrath
  • Liquid crystal medium
    Patent number: 11952527
    Abstract: A liquid crystal medium containing a compound of formula I and one or more compounds of the formulae IIA, IIB, IIC and IID, useable in optical, electro-optical and electronic purposes, in particular in LC displays.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: April 9, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Sven Christian Laut, Harald Hirschmann, Juergen Radestock
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20150048276
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 has the meanings indicated in Claim 1, and to the use thereof in liquid-crystalline media and in electro-optical liquid-crystal displays.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Applicant: Merck Patent GmbH
    Inventors: Mark GOEBEL, Lars LIETZAU, Sabine SCHOEN, Andreas POHLE
  • LIQUID-CRYSTAL DISPLAY
    Publication number: 20100188618
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilised) or PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PS (polymer stabilised) and PSA displays.
    Type: Application
    Filed: July 3, 2008
    Publication date: July 29, 2010
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Matthias Bremer, Georg Bernatz
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20130327984
    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: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Merck Patent GmbH
    Inventors: Michael WITTEK, Brigitte SCHULER, REIFFENRATH Volker, Mark GOEBEL, Markus CZANTA