Search Patents
  • Liquid crystal medium
    Patent number: 9428694
    Abstract: The present invention relates to a liquid crystal (LC) medium, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type, and to LC displays, especially PS or PSA displays, comprising said LC medium.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: August 30, 2016
    Assignee: Merck Patent GmbH
    Inventors: Martin Engel, Melanie Klasen-Memmer, Christoph Marten, Stephan Derow
  • Polymerisable monocyclic compounds
    Patent number: 7465479
    Abstract: The invention relates to polymerisable monocyclic compounds, their use in liquid crystal mixtures, polymers and polymer films, and the use of the compounds, mixtures, polymers and polymer films in optical, electrooptical and electronic devices, for decorative and security applications.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: December 16, 2008
    Assignee: Merck Patent Gesellschaft Mit Beschraenkter Haftung
    Inventors: Matthias Bremer, Melanie Klasen-Memmer, Dagmar Klement, Stephan Derow
  • Polymerizable compounds and use thereof in liquid crystal displays
    Patent number: 9045683
    Abstract: The present invention relates to 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 sustained”) or PSA (“polymer sustained alignment”) type.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: June 2, 2015
    Assignee: Merck Patent GmbH
    Inventors: Andreas Taugerbeck, Achim Goetz, Stephan Derow
  • Liquid crystal display
    Patent number: 8304035
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PS (polymer stabilized) and PSA displays.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: November 6, 2012
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck
  • Chiral binaphthyl sulfates for use as liquid crystal materials
    Patent number: 7943061
    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: March 16, 2007
    Date of Patent: May 17, 2011
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Louise Diane Farrand, Patricia Eileen Saxton
  • Liquid-crystalline media
    Patent number: 10072209
    Abstract: The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 11, 2018
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
  • Liquid crystal medium
    Patent number: 7288295
    Abstract: Liquid crystal media based on a mixture of polar compounds of formulae I-VIII, their use for electro-optical purposes, and displays containing this medium, are described.
    Type: Grant
    Filed: November 25, 2005
    Date of Patent: October 30, 2007
    Assignees: Merck Patent GmbH, Sharp Corporation
    Inventors: Hideo Ichinose, Yasushi Sugiyama, Takanori Takeda, Jeong-Hee Sung, Masako Nakamura, Yoshito Hashimoto, Tsuyoshi Okazaki, Toshihiro Matsumoto
  • Liquid-crystalline medium
    Patent number: 8834744
    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: Grant
    Filed: August 14, 2013
    Date of Patent: September 16, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Reiffenrath Volker, Mark Goebel, Markus Czanta
  • Method of preparing a birefringent polymer film
    Patent number: 10100253
    Abstract: The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electrooptical devices, for decorative or security applications, as alignment layer or optical retardation film.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: October 16, 2018
    Assignee: Merck Patent GmbH
    Inventors: Iain Gardiner, Owain Llyr Parri, Tara Perrett, Joseph Sargent, Jack Bradford, Sarah Whitehouse
  • Liquid-crystalline medium
    Patent number: 7854970
    Abstract: Disclosed are a liquid-crystalline medium based on a mixture of polar compounds which contain at least one compound of formula I and the use thereof for a passive-matrix or active-matrix display based on the ECB, FFS, PALC or IPS effect.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: December 21, 2010
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Melanie Klasen-Memmer, Axel Jansen, Izumi Saito
  • Liquid crystal medium and liquid crystal display
    Patent number: 9938464
    Abstract: The instant invention relates to mesogenic media comprising one or more compounds of formula G wherein the parameters are as specified in the text, preferably to mesogenic media showing a blue phase, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: April 10, 2018
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Matthias Bremer, Erdal Durmaz
  • Liquid-crystalline medium
    Patent number: 7198828
    Abstract: The invention relates to a liquid-crystalline medium which is characterized in that it comprises one or more compounds of the formula A and at least one compound of the formula B in which Ra, Rb, Y, Z1, Z2, L1, L2, L3, L4, L5, L6, L7, L8 and L9 are as defined in Claim 1.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: April 3, 2007
    Assignee: Merck Patent Gesellschaft
    Inventors: Harald Hirschmann, Peer Kirsch
  • Liquid-crystalline medium and liquid crystal display
    Patent number: 8574456
    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: Grant
    Filed: February 18, 2009
    Date of Patent: November 5, 2013
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Volker Reiffenrath, Mark Goebel, Markus Czanta
  • Thiophene derivatives, and LC media comprising same
    Patent number: 8486297
    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: Grant
    Filed: February 3, 2010
    Date of Patent: July 16, 2013
    Assignee: Merck Patent GmbH
    Inventors: Axel Jansen, Detlef Pauluth, Harald Hirschmann, Markus Czanta
  • Liquid crystal medium and liquid display
    Patent number: 10450509
    Abstract: Mesogenic media comprising one or more compounds of formulae I or II preferably mesogenic media showing a blue phase, preferably stabilized by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as such devices.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: October 22, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Norihiko Tanaka, Malgorzata Rillich, Volker Reiffenrath, Axel Jansen
  • Polymerizable compounds and the use thereof in liquid crystal displays
    Patent number: 9090822
    Abstract: The present invention relates to 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 or PSA type (“polymer sustained” or “polymer sustained alignment” respectively).
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: July 28, 2015
    Assignee: MERCK PATENT GMBH
    Inventors: Achim Goetz, Christoph Marten, Sven Christian Laut, Andreas Taugerbeck
  • Liquid-crystal medium
    Patent number: 7731865
    Abstract: The present invention relates to liquid-crystal (LIQUID CRYSTALLINE) media comprising polymerizable compounds, in particular for use in LIQUID CRYSTALLINE displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to PS(A) displays containing LIQUID CRYSTALLINE media of this type.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: June 8, 2010
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck, Matthias Bremer, Achim Goetz
  • Liquid-crystal display
    Patent number: 9005720
    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: April 23, 2010
    Date of Patent: April 14, 2015
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • Liquid-crystalline medium and liquid-crystal display having high twist
    Patent number: 7887717
    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: March 4, 2009
    Date of Patent: February 15, 2011
    Assignee: Merck Patent Gesellschaft Mit Beschranker Haftung
    Inventors: Akihiro Kojima, Makoto Murakami, Fumio Shimano, Jeong-Hee Sung
  • LIQUID CRYSTAL MEDIUM AND LIQUID CRYSTAL DISPLAY
    Publication number: 20140225035
    Abstract: The instant invention relates to mesogenic media comprising one or more compounds selected from the group of compounds of formulae E and H wherein the parameters are as specified in the text, preferably to mesogenic media showing a blue phase, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices.
    Type: Application
    Filed: July 25, 2012
    Publication date: August 14, 2014
    Applicant: MERCK PATENT GmbH
    Inventors: Michael Wittek, Norihiko Tanaka, Malgorzata Rillick, Matthias Bremer, Mila Fischer