Patents Examined by Geraldina Visconti
  • Patent number: 12197095
    Abstract: A liquid crystal composition includes a component A composed of one or more liquid crystals with negative dielectric anisotropy and a component B composed of one or more compounds selected from a general formula I, where the optical anisotropy of the liquid crystal composition is larger than 0.14. The elastic coefficient of a liquid crystal system is adjusted by introducing a bi-mesogenic compound into a negative liquid crystal or a negative liquid crystal mixture. When the liquid crystal composition is used for the dimming device, the minimum light transmittance of the dimming device in the dark state can be significantly reduced, the adjustment range of the light transmittance in the light state and the dark state can be expanded, and the haze in the dark state can be increased, thereby broadening the use range.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: January 14, 2025
    Assignee: Smart Liquid Crystal Technologies Co., Ltd.
    Inventors: Hongwei Zhang, Wenqing Shen, Jianhua Tang, Li Zhang
  • Patent number: 12197062
    Abstract: The present invention relates to a liquid crystal composition for a light-scattering liquid crystal device shown in FIG. 1 containing a polymerizable compound selected from the group consisting of compounds represented by the following general formula (1) as a first component and containing a compound having a negative dielectric anisotropy as a second component, a light-scattering liquid crystal device using the liquid crystal composition, and a smart window using the light-scattering liquid crystal device. A reverse mode type light-scattering liquid crystal device can have excellent transparency when no voltage is applied and a reduced driving voltage by the liquid crystal composition of the present invention.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: January 14, 2025
    Assignee: DIC CORPORATION
    Inventors: Masanao Takashima, Shinichi Hirata, Kazunori Maruyama, Toru Fujisawa, Kazuaki Hatsusaka, Hidetoshi Nakata
  • Patent number: 12195661
    Abstract: Provided is a liquid crystal polymer composition having a low coefficient of static friction and a low coefficient of kinetic friction both during sliding between a liquid crystal polymer molded body and a metallic material and during sliding between liquid crystal polymer molded bodies. The liquid crystal polymer composition contains a liquid crystal polymer (A), a polytetrafluoroethylene resin (B), and barium sulfate (C).
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: January 14, 2025
    Assignee: OTSUKA CHEMICAL CO., LTD.
    Inventors: Toshihiro Maruo, Yuuki Takaishi
  • Patent number: 12187946
    Abstract: A polymerisable LC material comprising one or more di- or multireactive mesogenic compounds and one or more compounds of formula UVI, and one or more compounds of formula UVII, Further, a method for its preparation, a polymer film with improved thermal durability and UV stability obtainable from a corresponding polymerisable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerisable LC material for optical, electro-optical, decorative or security devices.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: January 7, 2025
    Assignee: Merck Patent GmbH
    Inventors: Jin-Soon Park, Hoo-Yong Lee, Hyun-Jin Yoon, Heui-Seok Jin
  • Patent number: 12187944
    Abstract: A liquid-crystal (LC) medium which is based on a mixture of polar compounds and is substantially dielectrically neutral, its use for optical, electro-optical and electronic purposes, in particular as optical retarder or optical compensator in LC displays, an optical retarder or optical compensator containing the LC medium, an optical, electrooptical or electronic device containing the optical retarder or optical compensator, and a process of manufacturing the optical retarder or optical compensator.
    Type: Grant
    Filed: May 23, 2023
    Date of Patent: January 7, 2025
    Assignee: Merck Patent GmbH
    Inventors: Sven Christian Laut, Tzu-Huan Tseng, Kuang-Ting Chou, Chi-Shun Huang
  • Patent number: 12181800
    Abstract: A resist composition including a base material component (A), an acid generator component (B), and a mixed solvent (S) in which an organic solvent (S1) represented by Formula (s1) is mixed, in which the acid generator component (B) contains a compound (B1) represented by Formula (b1). In the formula, Rb1 represents an aryl group. Rb2 and Rb3 each independently represent an aliphatic hydrocarbon group. Lb1, Lb2, and Lb3 each independently represent a divalent linking group or a single bond. X? represents a counter anion.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: December 31, 2024
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Tsuyoshi Nakamura, Yosuke Suzuki, JunYeob Lee
  • Patent number: 12173217
    Abstract: Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.
    Type: Grant
    Filed: February 9, 2024
    Date of Patent: December 24, 2024
    Assignee: Lightwave Logic, Inc.
    Inventors: Cory Pecinovsky, Barry Johnson, Ginelle A. Ramann
  • Patent number: 12172951
    Abstract: The present invention is an anthraquinone compound represented by formula (1) (in the formula. R1 represents a hydrogen atom, a C1-C12 linear or branched alkyl group, or a C1-C12 linear or branched alkoxy group, and R2 represents a substituent represented by: formula (a) (in formula (a), R3 represents a hydrogen atom, a C1-C8 linear or branched alkyl group, a C1-C8 linear or branched alkoxy group, or a substituent represented by —CH2OR4, where R4 represents a C1-C8 linear or branched alkyl group); or formula (b) (in formula (b). R5 represents a hydrogen atom, a C1-C8 linear or branched alkyl group, or a substituent represented by —CH2OR6, where R6 represents a C1-C8 linear or branched alkyl group)).
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: December 24, 2024
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kohei Ohtani, Masakazu Shiraishi, Hitomi Muto, Saori Suzuki, Kanae Ogawa
  • Patent number: 12163081
    Abstract: A liquid-crystal (LC) medium based on a mixture of polar compounds, its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the vertically aligned mode, to an LC display of the vertically aligned mode containing the LC medium, especially an energy-saving LC display and a process of manufacturing the LC display.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: December 10, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Sabine Schoen, Philipp Wucher
  • Patent number: 12163082
    Abstract: The present disclosure provides a liquid crystal composition, a liquid crystal display panel, and a manufacturing method of the liquid crystal display panel. Liquid crystal main monomer and polymerizable component monomer are adopted, and mass fractions of the liquid crystal main monomer and the polymerizable component monomer are controlled, so the polymerizable component monomer in the liquid crystal composition can react completely after an UV irradiation, and a second UV irradiation is dispensed. Therefore, it can reduce alignment time of liquid crystals.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: December 10, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guoren Luo
  • Patent number: 12163080
    Abstract: Disclosed are a liquid crystal (LC) composition and a high-frequency component including the same. The LC composition includes one or more selected from compounds shown in structural formula (I) and one or more selected from compounds shown in structural formula (II): where R1 is selected from alkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, fluorinated alkyl, fluorinated alkenyl, and cycloalkyl; one of X1, X2, and X3 is methyl or chlorine, and the other two are hydrogen; k, m, n, and p are 0 or 1; and ring A is selected from a benzene ring, cyclohexane, and cyclohexene; ?where R2 and R3 each are selected from alkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, fluorinated alkyl, fluorinated alkenyl, cycloalkyl, halogen, and NCS; and ring A and ring B each are selected from a benzene ring, cyclohexane, and cyclohexene.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: December 10, 2024
    Assignee: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE
    Inventors: Jian Li, Minggang Hu, Juanli Li, Zhaoyi Che, Lingchao Mo, Lu Zhang, Zhongwei An, Danyang Wan, Xiaozhe Yang, Cheng Yang, Fengjiao Shi
  • Patent number: 12162834
    Abstract: Reactive mesogens (RMs), mixtures and formulations comprising RMs, polymers obtained from such RMs and RM mixtures, and the use of the RMs, RM mixtures and polymers in optical or electrooptical components or devices, like optical films for liquid crystal displays (LCDs).
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: December 10, 2024
    Assignee: Merck Patent GmbH
    Inventors: Jack Bradford, Kevin Adlem, Naomi Weare, Vicki Poole, Iain Gardiner
  • Patent number: 12163084
    Abstract: Disclosed is a mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device. In Chemical Formula 1, R3 represents a substituted or non-substituted heterocyclic group having 1-20 carbon atoms. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: December 10, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Seo-Young Im, Duy Hieu Le, Ho-Yong Lee, Jae-Myeng Jeong
  • Patent number: 12157852
    Abstract: The purpose of the present invention is to provide a novel anthraquinone compound, and to provide: a dichroic dye constituted of the novel anthraquinone compound; a liquid crystal composition which contains the dichroic dye; and preferably a dimming element having excellent contrast and light resistance and containing said composition. The present invention discloses an anthraquinone compound represented by formula A below (wherein R1 represents a C3-16 branched alkyl group, and R2 represents a hydrogen atom, a C1-8 straight-chain or branched alkyl group, or a C1-8 straight-chain or branched alkoxy group). In addition, the present invention discloses a liquid crystal composition including the anthraquinone compound and a liquid crystal material, and a dimming element containing said composition.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: December 3, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kanae Ogawa, Kohei Ohtani, Saori Suzuki, Hitomi Muto, Masakazu Shiraishi, Yu Hattori
  • Patent number: 12157851
    Abstract: The present invention pertains to: a liquid crystal composition for controlling light that contains, as a dichroic dye, an anthraquinone compound having a specific structure; and a light-controlling element that contains a cured product of said liquid crystal composition for controlling light and exhibits excellent contrast, light-blocking performance, lightfastness, and heat tolerance during current supply. More specifically, the present invention pertains to: a liquid crystal composition for controlling light that contains a compound represented by formula (A) (in the formula. R1 represents a C1-12 alkyl group or a C1-12 alkoxy group, and each R2 independently represents a C1-8 alkyl group), a liquid crystal material, a photocurable compound, and a photoinitiator; and a light-controlling element that is formed by sandwiching a photocured product of said composition between a pair of substrates.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: December 3, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kohei Ohtani, Saori Suzuki, Kanae Ogawa, Takashi Yoshimoto, Yu Hattori
  • Patent number: 12152188
    Abstract: Provided is a polarizer-forming composition from which a polarizer with a high degree of alignment and excellent heat resistance can be formed, a polarizer, and an image display device. The polarizer-forming composition includes a liquid crystal compound, and a dichroic material, in which the liquid crystal compound is a polymer liquid crystal compound, and a content of a component having a number average molecular weight of 1000 or less which is contained in the polymer liquid crystal compound is in a range of 0.10% to 5.0% by mass.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: November 26, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Hoshino, Hiroshi Matsuyama
  • Patent number: 12139656
    Abstract: The present invention pertains to: a liquid crystal composition for controlling light that contains, as a dichroic dye, an anthraquinone compound having a specific structure; and a light-controlling element that contains a cured product of said liquid crystal composition for controlling light and exhibits excellent contrast, light-blocking performance, lightfastness, and heat tolerance during current supply. More specifically, the present invention pertains to: a liquid crystal composition for controlling light that contains a compound represented by formula (A) (in the formula, R1 represents a C4-12 alkyl group or a C4-12 alkoxy group, and each R2 independently represents a C6-12 alkyl group), a liquid crystal material, a photocurable compound, and a photoinitiator; and a light-controlling element that is formed by sandwiching a photocured product of said composition between a pair of substrates.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: November 12, 2024
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kohei Ohtani, Saori Suzuki, Kanae Ogawa, Takashi Yoshimoto
  • Patent number: 12116521
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a compound of formula I and one or more compounds of formula II as defined in claim 1, and to the use thereof for optical, electro-optical and electronic purposes, in particular in LC displays, especially in IPS, FFS, VA or PS-VA displays.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 15, 2024
    Assignee: MERCK PATENT GMBH
    Inventor: Sven Christian Laut
  • Patent number: 12110437
    Abstract: The present invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II. The liquid crystal composition has a larger vertical dielectric constant (??), a larger ratio of the vertical dielectric constant to the absolute value of dielectric anisotropy (??/|??|), a larger Kave value and a higher transmittance while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of the dielectric anisotropy, such that the liquid crystal display device comprising the same has a better contrast, a faster response speed and a better transmittance while maintaining an appropriate range of operating temperature and an appropriate threshold voltage.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: October 8, 2024
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Yunyun Liu, Di He, Shuang Xu, Haibin Xu, Lifang Yao, Yafei Yang, Zhenting Zhou, Dike Pan, Fei Zhao
  • Patent number: 12104109
    Abstract: A liquid-crystal (LC) material having negative dielectric anisotropy and the use thereof for optical, electro-optical and electronic purposes, such as for example in LC displays, in particular energy saving displays based on the ECB, IPS or FFS effect, where the liquid crystal medium contains one or more compounds of formula I and one or more compounds compounds of formulae IIA, IIB, IIC and IID
    Type: Grant
    Filed: June 22, 2023
    Date of Patent: October 1, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Chi-Shun Huang, Sven Christian Laut, Hee-Kyu Lee, Minghui Yang, Harald Hirschmann, Kuang-Ting Chou, Shih-Chieh Hung, Alexander Hahn, Philipp Wucher