Patents Examined by Geraldina Visconti
  • Patent number: 10703973
    Abstract: The present invention provides a polymerizable composition containing a polymerizable liquid crystal compound represented by Formula (I) and an oxime compound, in the formula, A1 and A2 each represent a phenylene group or a trans-1,4-cyclohexylene group, L1 and L2 each represent single bond, —C(?O)O—, or —OC(?O)—, Q1 and Q2 each represent a polymerizable group or the like, m and n represent an integer of 0 to 2, X may represent —X3-Sp3-Q3 or two X's may be bonded to each other to form a fused ring, X3 represents —C(?O)O—, Sp1, Sp2, and Sp3 each represent single bond, an alkylene group, or the like, Q3 represents hydrogen atom, a cycloalkyl group, a polymerizable group, or the like, and l represents an integer of 0 to 4. The polymerizable composition hardly causes yellowing after curing and is useful for manufacturing a film and a half mirror for displaying a projection image.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 7, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Shunya Katoh, Shinnosuke Sakai, Yuki Saiki, Akihiro Anzai
  • Patent number: 10703974
    Abstract: Provided is a liquid crystal compound represented by formula I, the compound having a positive dielectric anisotropy, a great elastic constant and a good solubility. Further provided is a liquid crystal composition comprising the liquid crystal compound represented by formula I, the liquid crystal composition having a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by the adjustment of the monomer ratio, and a higher clearing point (a very wide service temperature range), and in particular, the liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 7, 2020
    Assignee: SHIJIAHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Guoliang Yun, Ke-Lun Shu, Zhe Shao, Xing Zhang, Jianming Cheng, Limei Zhang
  • Patent number: 10690952
    Abstract: The liquid crystal display element includes: two transparent substrates, at least one of the two transparent substrates having an electrode; a liquid crystal composition sandwiched between the two transparent substrates and containing one or two or more liquid crystal compounds; and a copolymer included in the liquid crystal composition, the copolymer being a cured product of a polymerizable composition that contains two or more polymerizable compounds. The polymerizable compounds used include one or two or more polymerizable, photo-alignable compounds (Vn), and the content of the polymerizable composition is 1% by mass or more and less than 40% by mass based on the total weight of the polymerizable composition and the liquid crystal composition. The liquid crystal display element of the present invention is applicable to various operational modes such as TN, STN, ECB, VA, VA-TN, IPS, FFS, ? cell, OCB, and cholesteric liquid crystal modes.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: June 23, 2020
    Assignee: DIC CORPORATION
    Inventor: Toru Fujisawa
  • Patent number: 10689576
    Abstract: Provided are a liquid crystal composition that contains a polar compound having a polymerizable group, in which vertical alignment of liquid crystal molecules can be achieved by action of the compound (or polymer), and a liquid crystal display device including the composition. The composition satisfies at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: June 23, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10683456
    Abstract: Provided is a composition which can be used for formation of an optical film having high quality and a high dichroic ratio even after the composition is stored for a predetermined period of time. The composition includes a compound represented by the general formula (A) and a compound represented by the general formula (B), wherein R1a in the general formula (A) and R1b in the general formula (B) are mutually different groups.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: June 16, 2020
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masao Morimoto, Noriyuki Hida
  • Patent number: 10676669
    Abstract: A compound represented by formula (1), a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. R is alkyl having 1 to 15 carbons or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1 and Z2 are independently a single bond, —COO— or the like; Y1, Y2 and Y3 are independently hydrogen, fluorine or chlorine; and m is 0, 1 or 2.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 9, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Mayumi Goto, Sayaka Fujimori
  • Patent number: 10669482
    Abstract: A liquid crystal composition including a polymerizable liquid crystal compound capable of expressing birefringence with reverse wavelength distribution and a surfactant containing a fluorine atom, a 1-octanol/water partition coefficient of the surfactant being less than 5.0.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: June 2, 2020
    Assignee: ZEON CORPORATION
    Inventors: Akira Ikeda, Shunpei Nakajima, Masaya Miyamura, Yuki Tamura
  • Patent number: 10669483
    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 type.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 2, 2020
    Assignee: Merck Patent GmbH
    Inventors: Qiong Tong, Helga Haas, Thorsten Kodek, Peer Kirsch, Constanze Brocke, Eveline Baron, Christoph Marten
  • Patent number: 10662377
    Abstract: The invention relates to a liquid crystalline medium, characterised in that it comprises one or more compounds of formula A and one or more compounds of formula II wherein the parameters have the meaning indicated in claim 1, and to high-frequency components comprising the same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular microwave phased-array antennas.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 26, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Constanze Brocke, Atsutaka Manabe, Michael Wittek, Renate Seeger
  • Patent number: 10655063
    Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having high maximum temperature or low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: May 19, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masayuki Saito, Eriko Kurihara
  • Patent number: 10647918
    Abstract: A liquid crystal composition includes: at least one liquid crystal compound selected from the group consisting of Chemical Formulas 1-1 to 1-8; at least one self-aligned compound selected from the group consisting of Chemical Formulas 2-1 and 2-2; and at least one reactive mesogen selected from the group consisting of Chemical Formulas 3-1 to 3-5. Compositions and devices constructed therewith are capable of ameliorating liquid crystal drip spots that typically occur in a manufacturing process. In addition, the display devices using the composition do not require an additional alignment layer, which simplifies manufacturing.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Eun Jang, Sun Young Kwon, Min-Hee Kim, Jong Ho Son, Keun Chan Oh, Chang-Hun Lee
  • Patent number: 10647919
    Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as a short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and a long service life.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: May 12, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masayuki Saito, Yoshimasa Furusato
  • Patent number: 10640709
    Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and a short helical pitch, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific optically active compound as an additive, and a specific compound having high maximum temperature or small viscosity as a first component, and may contain a specific compound having positive dielectric anisotropy as a second component, or a specific compound having negative dielectric anisotropy as a third component.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: May 5, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10633589
    Abstract: Provided are a liquid-crystal-medium having stability to heat, light and so forth, a wide liquid-crystal-phase temperature-range and significantly large dielectric-anisotropy and developing an optically isotropic liquid-crystal-phase; and various optical-devices used in a wide temperature-range, having short response-time, a large contrast-ratio and low drive-voltage and suppressing decrease in an effective dielectric-constant in a high-frequency range.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 28, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hitoshi Tobata, Eiji Okabe
  • Patent number: 10634834
    Abstract: An object of the present invention is to provide an optical film having excellent alignment, and a polarizing plate and an image display device using the same. The optical film of the present invention is an optical film having at least an optically anisotropic layer, and the optically anisotropic layer contains a smectic liquid crystal compound not including a fluorine atom and a compound partially having a cyclohexane ring in which the hydrogen atom is substituted with a linear alkyl group.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 28, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Shinnosuke Sakai, Ayako Muramatsu
  • Patent number: 10626330
    Abstract: The invention relates to a method of manufacturing a liquid crystal display device wherein a liquid crystal mixture having positive dielectric anisotropy or negative dielectric anisotropy is interposed between a first substrate and a second substrate, the liquid crystal mixture comprising liquid crystal molecules, a self assembling photoalignment agent, a polymerisable compound, and wherein said LC mixture is photoaligned by irradiation with linearly polarised ultraviolet light and then cured by irradiation with ultraviolet light.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 21, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Kevin Adlem, Alex Davis, Rachel Tuffin, Mark Goebel, Graziano Archetti, Rocco Fortte, Karl Skjonnemand, Ian Charles Sage
  • Patent number: 10619100
    Abstract: The present disclosure relates to a chiral compound of formula (I), wherein R1, R1?, R2, R2?, n, n?, m and m? are as defined in the specification. The present disclosure also relates to the preparation of the chiral compound. A cholesteric liquid crystal can be obtained by adding the compound to a nematic liquid crystal material, and the helical twisting power constant of the chiral additive can be changed by irradiating, so as to expand the reflection band width. As such, the present disclosure further relates to the use of the chiral compound in preparing a cholesteric liquid crystal material, a cholesteric liquid crystal material comprising the chiral compound of the present disclosure, and a display device comprising the cholesteric liquid crystal material.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 14, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Xiaoyue He, Lei Zhang, Tsung Chieh Kuo, Ming Hu
  • Patent number: 10611963
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: April 7, 2020
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Sabine Schoen
  • Patent number: 10611964
    Abstract: A polymerizable compound has a high polymerizability, a high conversion ratio and a high solubility in a liquid crystal composition. A polymerizable composition contains the compound. A liquid crystal composite is prepared from the composition. A liquid crystal display device includes the liquid crystal composite. The polymerizable compound is formed in which the polymerizable compound has at least two polymerizable groups in which at least one polymerizable group is acryloyloxy or methacryloyloxy, and at least one remaining polymerizable group is a polymerizable group selected from the group of groups represented by formulas (P-1), (P-2) and (P-3). In formulas (P-1) to (P-3), R1 to R8 are independently hydrogen, fluorine, methyl, ethyl or trifluoromethyl.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 7, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masahide Kobayashi, Yasuyuki Gotoh, Mayumi Goto
  • Patent number: 10597583
    Abstract: Shown are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, a specific compound having high maximum temperature or low viscosity as a fourth component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 24, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Atsushi Sakamoto, Masayuki Saito