Search Patents
  • 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
  • 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 display
    Patent number: 8114310
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PSA (polymer sustained alignment) type, and to novel polymerisable compounds and novel LC media for use in PSA displays.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: February 14, 2012
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck, Matthias Bremer, Achim Goetz
  • 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-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
  • 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
  • Formulation of an organic functional material
    Patent number: 10840448
    Abstract: The present invention relates to formulations containing at least one organic functional material and at least a first organic solvent, wherein said first organic solvent contains at least one norbornene group as well as to electronic devices prepared by using these formulations.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 17, 2020
    Assignee: Merck Patent GmbH
    Inventors: Li Wei Tan, Pawel Miskiewicz, Philip Edward May, Daniel Walker
  • 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
  • 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
  • Birefringent film and its use
    Publication number: 20030178609
    Abstract: A birefringent film comprising at least one birefringent layer of liquid crystal material forming multi domains with a splayed structure may be coated onto a reflective substrate, e.g., with an aluminium surface. The birefringent film is particularly suited for decorative, security, authentification or identification applications.
    Type: Application
    Filed: February 5, 2003
    Publication date: September 25, 2003
    Applicant: Merck Patent GmbH
    Inventors: Robert Hammond-Smith, John Patrick, Donald Gordon Graham
  • Anisotropic polymer film
    Patent number: 6953611
    Abstract: An anisotropic polymer film comprising a polymeriZed chiral liquid crystal material with helically twisted structure and having areas with different helical twist sense is useful for decorative or security applications.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: October 11, 2005
    Assignee: Merck Patent GmbH
    Inventors: Robert Hammond-Smith, John Patrick, Alison Linda May
  • Pentafluorosulfuranylbenzene derivatives
    Patent number: 6630210
    Abstract: The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I in which R1, A1, A2, Z1, L1, L2, L3 and n are as defined herein and to the use thereof in liquid-crystalline media.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: October 7, 2003
    Assignee: Merck GmbH
    Inventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
  • Liquid-crystalline medium
    Patent number: 7582337
    Abstract: Disclosed are a liquid-crystalline medium based on a mixture of polar compounds, which contains at least one compound of formula I and the use thereof for an active-matrix display based on the ECB, FFS, PALC or IPS effect.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 1, 2009
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Izumi Saito
  • Liquid crystal compounds
    Patent number: 11542433
    Abstract: The invention relates to compounds of the formula I, in which R, A, n, L1, L2, L3 and X have the meanings given in Claim 1, to a process for their preparation, and to liquid-crystalline media comprising at least one compound of the formula I and electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: January 3, 2023
    Assignee: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Volker Reiffenrath, Mark Goebel
  • Liquid-crystalline medium
    Patent number: 6951669
    Abstract: A liquid-crystalline medium having a mixture of polar compounds of positive dielectric anisotropy is described.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: October 4, 2005
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath
  • Birefringent marking
    Patent number: 7033653
    Abstract: The invention relates to a birefringent marking comprising a liquid crystal material. The invention further relates to method of providing such a birefringent marking and to the use of the birefringent marking for decorative or security applications.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: April 25, 2006
    Assignee: Merck Patent GmbH
    Inventors: Matthias Kuntz, Robert Hammond-Smith, Rodney Riddle, John Patrick, Donald Graham
  • Pyran-dioxane derivatives, and the use thereof in liquid-crystalline media
    Patent number: 7674507
    Abstract: The invention relates to pyran-dioxane derivatives and to the use thereof as component(s) in liquid-crystalline media. In addition, the present invention relates to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: March 9, 2010
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Markus Czanta
  • Liquid-crystalline medium
    Patent number: 6962733
    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 in which R1, L1 and L2 are as defined in claim 1.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: November 8, 2005
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid-crystalline medium
    Patent number: 8361568
    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, PALC, FFS or IPS effect.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: January 29, 2013
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer
  • Liquid-crystalline media
    Patent number: 11377596
    Abstract: 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: April 12, 2018
    Date of Patent: July 5, 2022
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann