Patents Examined by Geraldina Visconti
  • Patent number: 11390811
    Abstract: The present invention provides a liquid crystal composition, containing: one kind or two or more kinds of a first monomer having a first mesogenic skeleton, at least one polymerizable group represented by the general formula (PG1) linked to the first mesogenic skeleton, and at least one polar group linked to the mesogenic skeleton or the polymerizable group; and one kind or two or more kinds of a second monomer having a second mesogenic skeleton and a polymerizable group represented by the general formula (PG2) linked to the second mesogenic skeleton, and having a chemical structure different from that of the first monomer, in an amount of more than 0.4% by mass, which is excellent in vertical alignment, burn-in characteristics (change with time of pretilt angle), and compatibility, and provides a liquid crystal display element using the liquid crystal composition.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: July 19, 2022
    Assignee: DIC CORPORATION
    Inventors: Junko Yamamoto, Junichi Mamiya, Yuichi Inoue, Masaomi Kimura
  • Patent number: 11384287
    Abstract: The present disclosure provides a side chain liquid crystal epoxy monomer (S-LCEM) and a preparation method thereof, and a side chain liquid crystal epoxy resin (S-LCER) with high intrinsic thermal conductivity, and belongs to the technical field of epoxy resin materials. There are biphenyl mesogenic groups with strong rigidity in a molecular structure of the S-LCEM provided in the present disclosure and there are also flexible connections among chain segments, which promotes the ordered arrangement of S-LCEM molecular chains during a curing process. The highly-ordered arrangement of such mesogenic units is conducive to the formation of a local crystalloid structure, so that a heat flow is transferred along a direction of the ordered molecular chain, which effectively inhibits the scattering of phonons in the S-LCER with high intrinsic thermal conductivity and greatly improves the intrinsic thermal conductivity of the S-LCER with high intrinsic thermal conductivity.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: July 12, 2022
    Assignee: Northwestern Polytechnical University
    Inventors: Junwei Gu, Xutong Yang, Dong Yang, Xiao Zhong, Yongqiang Guo
  • Patent number: 11365354
    Abstract: A polymerizable liquid crystal compound represented by Chemical Formula 1, a liquid crystal composition for an optical element comprising the same, a polymer polymerized from the same, an optically anisotropic body comprising a cured material or polymerized reactant of the liquid crystal composition or the polymer, and an optical element for a display device comprising the optical anisotropic body are disclosed herein.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 21, 2022
    Inventors: Minyoung Kang, Hyok Joon Kwon, Sung In Lee
  • Patent number: 11365353
    Abstract: A black liquid-crystal polymer film that contains a black pigment and a liquid crystal polymer and the black liquid-crystal polymer film has a lightness of 45 or less, a dielectric loss tangent of 0.0035 or less, a minimum dielectric breakdown strength of 60 kV/mm or more, and a maximum-to-minimum ratio of in-plane thermal linear expansion coefficient in the range of 1.0 to 2.5.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 21, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoshimasa Nishi, Sunao Fukutake, Akira Moriya, Kanto Iida
  • Patent number: 11359143
    Abstract: Disclosed is a liquid crystal film for a vehicle, including a first electrode, a liquid crystal molecular layer provided on the first electrode, and a second electrode provided on the liquid crystal molecular layer. The liquid crystal molecular layer includes a pre-polymer, a liquid crystal material, and a crosslinking agent.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 14, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation, LIVICON
    Inventors: Moon Jung Eo, Young Jae Jeon
  • Patent number: 11359142
    Abstract: A liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of each of formulae T and L in which the parameters have the meanings given in the claims and in the text. The use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type. Also, the compounds of formulae T and L and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 14, 2022
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Constanze Brocke, Sebastian Hofmeyer
  • Patent number: 11359140
    Abstract: Disclosed are a liquid crystal composition and a liquid crystal display device. The liquid crystal composition comprises at least one compound of general formula I, at least one compound of general formula II, at least one compound of general formula III, and at least one compound of general formula IV. By compounding the four compounds, the composition can have advantages of a wide temperature range of nematic phase, a low viscosity and a low threshold voltage, and the liquid crystal display element can have a short response time and great power saving performance.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: June 14, 2022
    Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Wenyang Ma, Wenming Han, Haibin Xu, Liwei Wang, Weigang Yan
  • Patent number: 11352560
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: June 7, 2022
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
  • Patent number: 11345854
    Abstract: A liquid crystal dielectric applicable to high-frequency electromagnetic wave modulation has a clearing point of the liquid crystal dielectric higher than 110° C., a low-temperature storage temperature lower than ?20° C., and an optical anisotropy greater than 0.35. The liquid crystal dielectric includes: one or more compounds selected by general formula I, which occupy 30-80% of the total weight of the liquid crystal dielectric, and one or more compounds selected by general formula II and/or general formula III, which occupy 20-70% of the total weight of the liquid crystal dielectric.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 31, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenquan Ding, Zhenting Zhou, Panpan Wang
  • Patent number: 11339328
    Abstract: A liquid crystal composition includes at least one compound of general Formula I, at least one compound of general Formula II and at least one compound of general Formula M. The polymerizable liquid crystal composition provides a higher VHR (especially an excellent VHR after UV irradiation), a lower surface roughness of the polymer layer, a faster polymerization rate, a lower residual amount of the polymerizable compound and a better pretilt angle stability, which enables the production of a liquid crystal display device with a better voltage stability and a faster response speed, and can effectively reduce or prevent the occurrences of problems such as “burn-in”, “image sticking”, “Zara Particle” and “uneven display” in the liquid crystal display device. A liquid crystal display includes the liquid crystal composition.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: May 24, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Chenglong Sun, Wenquan Ding, Haibin Xu, Shuang Xu
  • Patent number: 11332671
    Abstract: A first object of the present invention is to provide a liquid crystal composition capable of forming a reflective layer having excellent diffuse reflectivity. A second object of the present invention is to provide a method for producing a reflective layer having excellent diffuse reflectivity and a reflective layer having excellent diffuse reflectivity. A third object of the present invention is to provide a cured product and an optically anisotropic body, each of which is formed of the liquid crystal composition.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: May 17, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Keisuke Kodama, Shunya Katoh
  • Patent number: 11326102
    Abstract: The invention relates to a liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula YX in which the parameters have the meanings given in the text, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of formula YX for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 10, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Atsutaka Manabe, Constanze Brocke, Brigitte Schuler
  • Patent number: 11312907
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 26, 2022
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
  • Patent number: 11306252
    Abstract: A liquid crystal polyester resin composition including a liquid crystal polyester resin, 15 parts by mass or more and 100 parts by mass or less of a carbon fiber with respect to 100 parts by mass of the liquid crystal polyester resin, and 0.001 parts by mass or more and 0.02 parts by mass or less of a fullerene with respect to 100 parts by mass of the carbon fiber.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 19, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Shintaro Komatsu
  • Patent number: 11299676
    Abstract: The present invention relates to a mixture comprising a not fully aromatic polymerisable compound and a polymerisable photoinitiator, 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: September 26, 2018
    Date of Patent: April 12, 2022
    Assignee: Merck Patent GmbH
    Inventors: Qiong Tong, Dmitry Ushakov, Helga Haas, Steffen Gnauck, Thorsten Rachor, Sven Schuepfer, Simon Mundinger
  • Patent number: 11299674
    Abstract: The present invention provides a liquid crystal composition comprising: at least one compound of general Formula I; at least one compound of general Formula II; at least one compound of general Formula M and at least one compound of general Formula N. The present invention also provides a liquid crystal display device comprising the liquid crystal composition. The liquid crystal composition provided in the present invention has a higher optical anisotropy, a higher clearing point, a higher dielectric anisotropy, a high transmittance and a larger average elastic constant. When the liquid crystal composition is used in the IPS liquid crystal display device, the transmittance of the display device can be effectively improved, so that the display device has a good display performance while also having good energy-saving and environment-friendly characteristics.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 12, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Lifang Yao, Di He, Rui Jin
  • Patent number: 11299675
    Abstract: A polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when the compound is used in a liquid crystal display device; and a composition containing the compound. The compound is represented by formula (1).
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: April 12, 2022
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Tomohiro Yano, Fumitaka Kondo, Hiroki Sago
  • Patent number: 11287555
    Abstract: An object of the present invention is to provide a method for producing a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range. Another object of the present invention is to provide a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 29, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Keisuke Kodama, Shunya Katoh, Hiroshi Inada
  • Patent number: 11279878
    Abstract: The present invention relates to an optical article comprising a birefringent liquid crystal composition, said composition comprising more than 30% by weight based on the total weight of the composition of tolane compounds of formula R—S—Z1-A-Z2—NCS, in which R is a substituted or unsubstituted, linear or branched alkyl group, Z1 and Z2 are aryl groups, and A is an ethynyl group, an arylethynyl group or an ethynylarylethynyl group.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 22, 2022
    Assignees: Essilor International, Nikon Corporation
    Inventors: Przemyslaw Kula, Jakub Herman
  • Patent number: 11279879
    Abstract: The invention relates to a liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula IA, and one or more compounds of the formula IB, in which RA, RB, XA, XB and Y1-13 have the meanings indicated in Claim 1, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: March 22, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Sabine Schoen