Abstract: The present invention relates to aromatic isothiocyanates of formula U as defined in claim 1, to liquid-crystalline media comprising one or more compounds of formula U and to high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas, e.g. phased array antennas.
Abstract: An additive, liquid-crystal composition and a liquid-crystal display using the additive are provided. The additive includes a first additive molecule having a structure represented by formula (I): wherein Ri1, Ri2, Ri3, Ai1, Ai2, Zi, m1 and m2 are defined as in the specification.
Type:
Grant
Filed:
January 22, 2020
Date of Patent:
August 29, 2023
Assignee:
DAXIN MATERIALS CORPORATION
Inventors:
Chung-Hsien Wu, Wan-Yu Yang, Yi-Chun Lin, Chun-Chih Wang
Abstract: LC media and LC displays containing an LC medium with positive dielectric anisotropy, which contains one or more compounds of formula I in a concentration of >0 and ?10% and displays addressed by an active matrix and in particular displays of the IPS, PS-IPS, FFS, PS-FFS, HB-FFS, U-IPS, TN, PS-TN, STN or TN-TFT mode.
Type:
Grant
Filed:
June 26, 2020
Date of Patent:
August 29, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Yeon-Jeong Han, Dong-Hyun Kim, Heui-Seok Jin, Chang-Suk Choi
Abstract: Provided is a compound which is capable of reducing a tilt angle of a liquid crystal molecule, and a polymerizable composition, a cured product, an optical film, a polarizing plate, and an image display device, each using the compound. The compound is represented, for example, by Formula (I), P-Sp-Z-G1-(X1-Cy1)n-(X2-A1)m-X3-A2.
Abstract: A diacetylene-based lyotropic liquid crystal mixture according to an embodiment includes by mixing diacetylene-based compounds containing iodide and triiodide Chemical Formula 1 and Chemical Formula 2. The lyotropic liquid crystal mixture may be prepared by synthesizing an [X]—C—Rm-[D]-Rn compound, synthesizing an [A+X?]—C—Rm-D-Rn compound, and synthesizing an [A+B?]—C—Rm-D-Rn compound. A thin polarizing film may be prepared through simple coating of a lyotropic liquid crystal mixture prepared by mixing diacetylene-based compounds containing iodide and triiodide.
Type:
Grant
Filed:
April 17, 2019
Date of Patent:
August 15, 2023
Assignee:
INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY
Inventors:
Kwang Un Jeong, Yu Jin Choi, Seohee Park
Abstract: The present invention relates to a method for the preparation of a homogeneous aligned liquid crystal polymer film, a polymer film obtainable from the corresponding method of production, and to the use of such polymer film for optical components and electro-optical decorative, as well as to components and devices comprising such polymer film.
Type:
Grant
Filed:
January 20, 2020
Date of Patent:
August 8, 2023
Assignee:
Merck Patent GmbH
Inventors:
Stephen Mulcahy, Eduardo Beltran Gracia, Owain Parri, Vicki Poole, James Allen, Kevin Adlem, Hassan Arasi
Abstract: A liquid crystal composition for a display device, the composition includes compounds of Chemical Formulae 1-7 with the amounts and compounds defined herein.
Type:
Grant
Filed:
January 18, 2021
Date of Patent:
July 25, 2023
Assignee:
Samsung Display Co., Ltd.
Inventors:
Heung Shik Park, Kyeong Jong Kim, Ho Kil Oh, Jae Soo Jang
Abstract: Disclosed herein are embodiments of a composition that can be used to make liquid crystalline networks using thiol-ene-based polymerization. In particular embodiments, the liquid crystalline networks can be formed by using the composition embodiments in additive manufacturing methods. The composition comprises a monomer, chain extender compound, and a crosslinker compound and each of these components can be selected so as to influence the thermomechanical and shape memory properties of the liquid crystalline networks and/or objects formed therewith.
Type:
Grant
Filed:
October 21, 2020
Date of Patent:
July 25, 2023
Assignee:
UT-Battelle, LLC
Inventors:
Orlando Rios, William G. Carter, Michael R. Kessler, Yuzhan Li, Monojoy Goswami
Abstract: Organic ligands and methods for preparing a variety of organic ligands are provided. The subject methods provide for the preparation of organic ligands in high yield and purity for use as ligands for attachment to nanoparticles to enable the formation of three dimensional nanocapsules of stably associated organic ligand-functionalized nanoparticles. Compositions that include these nanocapsules, as well as methods of making the nanocapsules are also provided.
Type:
Grant
Filed:
October 30, 2018
Date of Patent:
July 25, 2023
Assignee:
The Regents of the University of California
Abstract: Compositions, systems and methods for use in monitoring an environment or a formation. The compositions can include electrically conductive material that can be used as a sensor. The sensor can have a non-writeable, writeable, and stimulated state. A first signal is used to induce the non-writeable material into a writeable state. In the writeable state, the electrically conductive material has the capacity for actuation in response to an orthogonal signal. In response to the orthogonal signal, the electrically conductive material then undergoes a conformation or shape change. The conformational or shape change induces a strain or actuation that can be used to generate a signal. The stimulated state can be reversible, and in the absence of the orthogonal signal the electrically conductive material may resume its original shape or conformation.
Abstract: The invention relates to novel anisotropic compounds of formula as well as to liquid crystalline mixtures, films and electro-optical devices comprising the compound.
Abstract: The present invention relates to azo dye of formula I defined in claim 1, to a liquid crystalline medium comprising said azo dye, the use of said medium for optical, electrooptical and electronic purposes, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows. The invention further relates to a device containing the liquid crystalline medium according to the invention.
Type:
Grant
Filed:
September 23, 2019
Date of Patent:
July 18, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Peer Kirsch, Kerstin Altenburg, René Lutz, Susann Gunst, Michael Junge, Ursula Patwal
Abstract: A polymerizable LC material comprising one or more reactive mesogenic compounds, one or more chiral compounds and a block copolymer that comprises at least one polyfluorooxetane block bonded to a polyether block, said polyfluorooxetane block having a repeating unit of the formula Further, a method for its preparation, a polymer film obtainable from a corresponding polymerizable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerizable LC material in optical, electro-optical, decorative or security devices.
Type:
Grant
Filed:
December 3, 2021
Date of Patent:
July 11, 2023
Assignee:
Merck Patent GmbH
Inventors:
Stephen Mulcahy, Owain Llyr Parri, Sarabjot Kaur
Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment (PS, PSA) and self-aligning (SA) type.
Type:
Grant
Filed:
February 14, 2020
Date of Patent:
June 27, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Helmut Haensel, Qiong Tong, Rocco Fortte, Edward Plummer, Thomas Eichhorn
Abstract: Provided are a thermoplastic polymer capable of reducing a dielectric dissipation factor in high frequency bands and a film thereof. The thermoplastic liquid crystal polymer includes repeating units represented by the following formulae (I), (II), (III) and (IV), in which a molar ratio of a total amount of the repeating units represented by formulae (I) and (II) to a total amount of all the repeating units in the thermoplastic liquid crystal polymer is 50 to 90 mol %, and a molar ratio of the repeating unit represented by formula (III) to the repeating unit represented by formula (IV) is the former/the latter=23/77 to 77/23.
Abstract: Some variations provide an anisotropic thermally conductive polymer composition comprising a plurality of polarizable, thermotropic main-chain liquid-crystal polymer molecules with crystalline domains. The liquid-crystal polymer molecules are in a nematic phase or a smectic phase, and at least 80% of the crystalline domains are aligned along a crystal axis. A method of making an anisotropic thermally conductive polymer composition comprises: synthesizing or obtaining a polymer containing polarizable domains; heating the polymer to form a polymer melt; cooling the polymer melt to form a thermotropic liquid-crystal polymer; exposing the thermotropic liquid-crystal polymer to an electrical field, thereby aligning the polarizable domains along a crystal axis; and recovering the thermotropic liquid-crystal polymer as an anisotropic thermally conductive polymer composition.
Type:
Grant
Filed:
December 5, 2021
Date of Patent:
June 13, 2023
Assignee:
HRL Laboratories, LLC
Inventors:
Adam Gross, Ashley Dustin, Adam Sorensen
Abstract: The present invention relates to benzotriazole derivatives selected from the group of compounds of formulae Ia, Ib and Ic as defined in claim 1, to mesogenic media comprising the compounds of formulae Ia, Ib and Ic, and to the use of these compounds and mesogenic media in optical, electronic and electro-optical applications, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows.
Abstract: The present invention relates to a compound of the general formula I in which the occurring groups and parameters have the meanings indicated in claim 1, to the use thereof in liquid-crystalline or mesogenic media and to liquid-crystalline or mesogenic media comprising these derivatives.
Type:
Grant
Filed:
October 28, 2019
Date of Patent:
June 6, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Matthias Bremer, Constanze Brocke, Atsutaka Manabe, Sven Laut
Abstract: The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, SA-VA, IPS, PS-IPS, FFS, PS-FFS, UB-FFS or PS-UB-FFS effect.
Type:
Grant
Filed:
April 27, 2020
Date of Patent:
May 23, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Su-Young Kim, Chang-Suk Choi, Jeong-Hee Sung, Ming Chou Wu, Sang-Kyu Lee
Abstract: The present invention provides a compound represented by the following general formula (I), and provides a liquid crystal composition containing the compound and a device using the liquid crystal composition. The compound of the present invention has a large refractive index anisotropy ?n and a high compatibility with a liquid crystal composition, and exhibits a large dielectric constant anisotropy in a high frequency region; and therefore, it is useful as a material for a device of a high-frequency phase shifter, a phased array antenna, an image recognition device, distance measuring equipment, a liquid crystal display device, a liquid crystal lens, a birefringent lens for stereoscopic image display, or the like.