Aryl Ester Of Aryl Acid Having Three Benzene Rings Patents (Class 252/299.64)
  • Patent number: 10494571
    Abstract: To provide a polymerizable liquid crystal compound in order to produce a retardation film having excellent front contrast. A polymerizable liquid crystal composition including a compound represented by Formula (1). In Formula (1), for example, W1 is an alkoxycarbonyl group having 1 to 10 carbon atoms, an alkanoyl group having 1 to 10 carbon atoms, or a polymerizable functional group, A1 is independently 1,4-phenylene or naphthalene-2,6-diyl, Z1 is a linking group, m and n are independently an integer of 0 to 7, and satisfy 3?m+n?8, and P1 is a polymerizable functional group.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: December 3, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Daisuke Ootsuki, Nagahisa Miyagawa
  • Patent number: 10151951
    Abstract: Disclosed are a liquid crystal material, a liquid crystal display panel and a manufacture method of a liquid crystal display panel. The liquid crystal material comprises liquid crystal molecules, and photosensitive vertical alignment material mixed thereamong, and the photosensitive vertical alignment material comprises a head group A, a middle base group Sp, a photosensitive base group B and a tail group R. The head group A is anchored on the substrate so that the entire molecules are aligned perpendicular with the substrate, and a photo reaction takes place to the photosensitive base group B by being irradiated with the ultraviolet light from the tilted direction, which leads to the alignment direction change of the entire molecules to be aligned on the substrate with a certain tilted angle according to the irradiation direction of the ultraviolet light. The liquid crystal molecules at the surfaces of the substrate have a pre-tilted angle.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: December 11, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Song Lan
  • Patent number: 9810938
    Abstract: A liquid crystal display device that prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and that resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display has features of preventing a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is particularly useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices of, for example, liquid crystal televisions, monitors, cellular phones, and smart phones.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: November 7, 2017
    Assignee: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Jouji Kawamura, Hiroshi Maki, Junichiro Koike, Masami Shishikura, Ryosuke Asami
  • Patent number: 9567523
    Abstract: A blue phase liquid crystal composite material and a liquid crystal display comprising the same, can solve the problem of small Kerr constant of the current blue phase liquid crystal and the liquid crystal display comprising the same. The blue phase liquid crystal composite material of the present disclosure is produced by the photo polymerization of the components comprising: a parent blue phase liquid crystal, a benzyne compound, a chiral compound, a photo-polymerizable monomer, and a photoinitiator. The blue phase liquid crystal composite material of the present disclosure has the advantages of large Kerr constant, low voltage, high contrast, rapid response to electric field, good stability, and the like.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: February 14, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Huai Yang, Birong Li, Wanli He, Ling Wang
  • Patent number: 9478678
    Abstract: A front sheet of solar cell, a method of manufacturing the same and a photovoltaic module are provided. The front sheet of solar cell can effectively block infrared rays (IRs) by forming an IR blocking layer including a cholesteric liquid crystal (CLC) material on a substrate. Thus, an increase in temperature of a cell can be suppressed so that the power generation efficiency of the cell can be improved. Also, the multi-layered sheet can be configured so that a UV blocking layer including a fluorine-based polymer and a wavelength conversion material can be formed on the IR blocking layer. Thus, wavelengths of a UV region can be converted into wavelengths of a VR region so that the power generation efficiency of the cell can be improved, and discoloration and deformation caused by UVs can be prevented so that the weather resistance can be improved.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: October 25, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Cheol Kim, Moon Soo Park, Dae Hee Lee, Yoon Kyung Kwon, Hyun Seong Ko
  • Patent number: 9212308
    Abstract: A liquid crystal composition for forming a polymer/liquid crystal composite in which disorder of an orientation state is reduced is provided. The liquid crystal composition includes a liquid crystal material exhibiting a blue phase and a liquid crystalline monomer represented by the following general formula (G1). Note that the liquid crystal composition may include a non-liquid-crystalline monomer and a polymerization initiator. In the general formula (G1), X represents a mesogenic skeleton; and Y1 and Y2 individually represent an alkylene group having a sum of carbon atoms and/or oxygen atoms of 1 to 20. Also in the general formula (G1), the alkylene group and the alkyl group may include a carbonyl group and may have an ether bond. In addition, the carbonyl group and the ether bond may form an ester structure. In the general formula (G1), Z1 and Z2 individually represent an acryloyl group or a methacryloyl group.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: December 15, 2015
    Assignee: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Daisuke Kubota, Sachiko Kawakami, Makoto Ikenaga, Takahiro Yamamoto
  • Patent number: 9139716
    Abstract: The present invention is drawn to adhesion promoters comprising an organotitanium compound and a polyamide, for use in solvent-based liquid inks and coatings for flexible packaging, including non-direct food packaging, uses of such adhesion promoters, methods of using such adhesion promoters, inks and coating comprising such adhesion promoters and articles printed with the inks and coatings comprising such adhesion promoters, for example, a laminated printed article (20) comprising a printed image (1) on a substrate (2) and superimposed with an overlay (3) wherein the printed image (1) is prepared from inks or coatings comprising the adhesion promoters.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: September 22, 2015
    Assignee: SUN CHEMICAL B.V.
    Inventors: Nicholas Matthew Crandon, Nicholas Pagliuca, Samar Mushtaq, David Jason Rimmer, Peter William Salthouse
  • Publication number: 20150147490
    Abstract: Provided are a liquid crystal composition, a liquid crystal film and a display device. The liquid crystal composition according to the present application may form a liquid crystal layer in which staining due to a thickness difference does not occur even in large-area coating such that a liquid crystal layer can be formed on a base layer having erosivity to a raw material since the liquid crystal composition may have a suitable solubility even in a solvent in which solubility is normally low.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 28, 2015
    Inventors: Su Young RYU, Doo Young HUH, Seong Jin KIM, Chul In JOUNG, Ji Youn LEE
  • Patent number: 8993074
    Abstract: There is provided a liquid crystal display device including a liquid crystal display element including a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy. At least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is crosslinked or polymerized. The first side chain has a crosslinkable functional group or a polymerizable functional group. The second side chain has a structure inducing dielectric anisotropy. The liquid crystal molecules are pretilted by the first alignment film.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Masashi Miyakawa, Shunichi Suwa, Tadaaki Isozaki
  • Patent number: 8956549
    Abstract: The present invention relates to a liquid-crystalline medium, characterised in that it contains a polymerisable component (A) containing one more polymerisable compounds and a liquid-crystalline component (B) containing one more compounds of the general formula I in which R, rings A1 and A2, Z1, Z2, Y1, Y2, X0 and r are as defined in Claim 1.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: February 17, 2015
    Assignee: Merck Patent GmbH
    Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
  • Patent number: 8920674
    Abstract: To provide a liquid crystal composition satisfying at least one characteristic including a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a large optical anisotropy, dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two characteristics; and an AM device having a short response time, a large voltage holding ratio and contrast ratio and a long life; a liquid crystal composition has a negative dielectric anisotropy and contains a compound having a low minimum temperature as a first component and a compound having a large negative dielectric anisotropy as a second component, and may contain a compound having a small viscosity as a third component and a compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device containing the composition.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 30, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
  • Patent number: 8916063
    Abstract: A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition has a negative dielectric anisotropy, contains a specific compound having a large negative dielectric anisotropy as a first component and a two-ring compound having a small viscosity as a second component, and may further contain a specific compound having a large negative dielectric anisotropy as a third component, a specific compound having a small viscosity as a fourth component and a specific compound having a large negative dielectric anisotropy as a fifth component. The AM liquid crystal display device includes the liquid crystal composition.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: December 23, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuyuki Goto, Kazuhiko Saigusa, Norikatsu Hattori
  • Publication number: 20140362335
    Abstract: A system having a vertically-aligned negative delta E nematic liquid crystal host material and a small amount of liquid crystal polymer is provided. The liquid crystal polymer improves the switching speed of a vertically aligned nematic system without sacrificing contrast or viewing angle.
    Type: Application
    Filed: August 25, 2014
    Publication date: December 11, 2014
    Applicants: LC VISION, LLC, CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Julia A. KORNFIELD, Michael WAND, Zuleikha KURJI
  • Publication number: 20140307218
    Abstract: Provided are a liquid crystal composition, a liquid crystal film, a method for preparing the liquid crystal film, and a display device. According to an illustrative liquid crystal composition of the present application, the liquid crystal composition may be uniformly coated at normal temperature without any need for adding heat, and thus the process is economical in terms of process, thereby allowing an equipment to be simply manipulated. Also, according to an illustrative liquid crystal composition, an appropriate fluidity may be secured even after a solvent for the liquid crystal composition is dried, and thus uniform alignment may be induced. Furthermore, according to an illustrative liquid crystal composition, uniform liquid crystal alignment may be performed even while liquid crystals are aligned in a wide area.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Su Young RYU, Moon Soo PARK
  • Patent number: 8821992
    Abstract: A liquid crystal formulation is described. The liquid crystal formulation comprises a first oligosiloxane-modified nano-phase segregating liquid crystalline material; and at least one additional material selected from a second oligosiloxane-modified nano-phase segregating liquid crystalline material, non-liquid crystalline oligosiloxane-modified materials, organic liquid crystalline materials, or non-liquid crystalline materials, wherein the liquid crystal formulation has an I?SmA*?SmC* phase transition, with a SmC* temperature range from about 15° C. to about 35° C., a tilt angle of about 22.5°±6° or about 45°±6°, a spontaneous polarization of less than about 50 nC/cm2., and a rotational viscosity of less than about 600 cP. Devices containing liquid crystal formulations are also described.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: September 2, 2014
    Assignees: Dow Corning Corporation, Cambridge Enterprise Ltd.
    Inventors: Jonathan Paul Hannington, Terry Victor Clapp, Fumito Nishida, Russel Keith King, Omar Farooq, Martin Grasmann, William Alden Crossland, Harry James Coles, Anthony Bernard Davey, Huan Xu, Oliver Hadeler, Mykhaylo Pivnenko
  • Publication number: 20140183410
    Abstract: A polymerizable liquid-crystal compound of formula (I) effective for preventing crystal deposition after coating with polymerizable liquid crystal (II) or a polymerizable liquid crystal similar thereto. P represents a polymerizable functional group; Sp represents a spacer or a single bond; Z1 and Z2 each represent —CO—O—; R0 represents a linear alkyl group having 1-15 carbon atoms; R2, R3 and R4 each independently represent an alkyl group having 1-4 carbon atoms, an alkoxy group having 1-4 carbon atoms, an alkoxycarbonyl group having 2-5 carbon atoms, an acyloxy group having 2-5 carbon atoms, an acyl group having 2-4 carbon atoms, an amide group having 2-5 carbon atoms, a cyano group, an amino group, a hydroxyl group, or a halogen atom; r1, r2 and r3 indicate an integer from 0-4; when r1, r2 and r3 each are 2 or more, then R2, R3 and R4 each may be the same or different; however, when R0 is a methyl group, then r2 is not 1.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Minoru UEMURA, Yasuhiro ISHIWATA, Masaru YOSHIKAWA, Takao TAGUCHI, Tomoki TASAKA
  • Patent number: 8758645
    Abstract: A blue phase liquid crystal material includes a liquid crystal host, a chiral reagent and a stable polymer. The chiral reagent is R811. The stable polymer is formed by photo-polymerizing a first monomer and a second monomer. The first monomer is 2-ethylhexyl acrylate (2-EHA), and the second monomer is 2-methyl-1,4-bis{4-[3(-acrylate)propoxyl]benzoicacid}phenylester (PTPTP). The blue phase liquid crystal material has a blue phase temperature range widened to an extremely low temperature. A blue phase liquid crystal composition and a method for manufacturing the blue phase liquid crystal material by using the blue phase liquid crystal composition are also provided.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: June 24, 2014
    Assignees: Infovision Optoelectronics (Kunshan) Co., Ltd., East China University of Science and Technology
    Inventors: Zhi-gang Zheng, Hai-feng Wang, Dong Shen
  • Publication number: 20140106089
    Abstract: A liquid crystal composition, a liquid crystal film and a display device are provided. The liquid crystal composition can be uniformly aligned with no problems such as dewetting in an operation of aligning horizontally alignable liquid crystals. Also, a state of the aligned liquid crystal compound can be stably maintained.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 17, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dae Hee LEE, Sin Young KIM, Da Mi LEE, Moon Soo PARK
  • Patent number: 8685275
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of the formula II in which R1, R2, R3, R4, ring A, Z1, Z2 and m are as defined in claim 1, and to the use thereof for an active-matrix display based on the ECB, VA, PS-VA, FFS, PALC or IPS effect.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: April 1, 2014
    Assignee: Merck Patent GmbH
    Inventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
  • Publication number: 20140049707
    Abstract: A liquid crystal composition for liquid crystal lens and a stereoscopic (3D) display containing the same are provided. The liquid crystal composition includes a main liquid crystal (chemical formula I), a first optical modifier (R811 or S811), a second optical modifier (CB15), and a dielectric constant modifier (chemical formula IV). The 3D display utilizes a horizontal electric field to make the above liquid crystal composition form crystal lens.
    Type: Application
    Filed: December 18, 2012
    Publication date: February 20, 2014
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chun-Wei SU, Jan-Tien LIEN
  • Publication number: 20140002785
    Abstract: The present invention relates to a photo-curable composition that can provide a film, etc. showing excellent optical anisotropy even without need for separately forming a liquid crystal layer and an alignment layer, an optical anisotropic film using the same, and its preparation method. The photo-curable composition comprises a photo-alignable polymer, a noncrosslinkable liquid crystal compound and a photo-curable binder.
    Type: Application
    Filed: November 26, 2012
    Publication date: January 2, 2014
    Applicant: LG CHEM, LTD.
    Inventor: LG CHEM, LTD.
  • Publication number: 20130309411
    Abstract: The present invention provides a birefringent lens material for a stereoscopic image display, the birefringent lens material containing two or more liquid crystal compounds each having at least one polymerizable functional group, a birefringent lens for a stereoscopic image display, the birefringent lens being formed by using the lens material, and a method for producing a birefringent lens for a stereoscopic image display using the lens material. The birefringent lens material for a stereoscopic image display and the birefringent lens for a stereoscopic image display of the present invention are good in terms of optical characteristics, durability, and productivity, in particular, productivity. The method for producing a birefringent lens for a stereoscopic image display of the present invention has good productivity.
    Type: Application
    Filed: December 20, 2011
    Publication date: November 21, 2013
    Applicant: DIC CORPORATION
    Inventors: Yasuhiro Kuwana, Hiroshi Hasebe
  • Patent number: 8585925
    Abstract: The present invention relates to dielectrically positive, preferably nematic, media comprising one or more polymerisable compounds, to polymer-stabilized media obtained therefrom, to the use thereof in liquid-crystal displays, and to these displays, in particular PSA-IPS, PSA-FFS and PSA-positive VA displays.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: November 19, 2013
    Assignee: Merck Patent GmbH
    Inventors: Markus Czanta, Izumi Saito, Christian Schoenefeld, Seung-Eun Lee, Sang-Kyu Lee, Ji-Hong Bae
  • Patent number: 8551358
    Abstract: The present invention relates to a liquid-crystalline medium, characterised in that it contains a polymerisable component (A) containing one more polymerisable compounds and a liquid-crystalline component (B) containing one more compounds of the general formula I in which R, rings A1 and A2, Z1, Z2, Y1, Y2, X0 and r are as defined in Claim 1.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: October 8, 2013
    Assignee: Merck Patent GmbH
    Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
  • Patent number: 8545717
    Abstract: The present invention relates to a composition comprising a curable dichroic dye and a curable liquid crystal compound, which are used to prepare an optical component that is vertically oriented to give a narrow viewing angle, to form an optical component, and an optical component comprising an optical component layer prepared using the same. There is provided a composition for forming an optical component comprising 0.1-90 parts by weight of a dichroic dye and 10-98.85 parts by weight of a curable liquid crystal compound, and there is also provided an optical component comprising an optical component layer in which a curable liquid crystal compound and a curable dichroic dye are vertically oriented.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: October 1, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Yong Il Cho, Dae Hee Lee, Sin Young Kim, Hee Jean Lee, Su Young Ryu
  • Patent number: 8518499
    Abstract: Methods of forming a liquid crystal blue phase from composite materials comprising a chiral nematic liquid crystal host and an azobenzene-based bent-shape molecule are described. The composite materials quickly transfer from the liquid crystal blue phase to an isotropic phase under electromagnetic radiation and transfer from the isotropic phase to the liquid crystal blue phase when electromagnetic radiation is removed.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: August 27, 2013
    Assignee: Empire Technology Development LLC
    Inventor: Zhigang Zheng
  • Publication number: 20130207038
    Abstract: The invention relates to a liquid-crystalline medium, characterised in that it contains one or more compounds of the formula IA, and at least one compound selected from the group of compounds of the formula IIA, IIB and IIC, in which RA, R2A, R2B, R2C, ring A, ring B, XA, Y1-6, L1-6, Z2, Z2?, o, p, q, v and (O)CvH2v+1 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: Application
    Filed: February 11, 2013
    Publication date: August 15, 2013
    Applicant: MERCK PATENT GMBH
    Inventor: Merck Patent GmbH
  • Patent number: 8506842
    Abstract: Provided is a liquid crystal composition that satisfies at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of a nematic phase, small viscosity, large optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or that is suitably balanced between at least two of the characteristics; and provided is an AM device. The liquid crystal composition having a nematic phase includes a three-ring compound having a specific difluoromethyleneoxy bond having large dielectric anisotropy as a first component, a specific three-ring compound having large dielectric anisotropy as a second component, a specific four-ring compound having high maximum temperature as a third component, and a specific two-ring compound having high maximum temperature and small viscosity as a fourth component, and the liquid crystal display device contains this composition.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: August 13, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takahiro Miyairi, Norikatsu Hattori
  • Patent number: 8486497
    Abstract: An embodiment of the invention provides a liquid crystal compound having the following formula: wherein A1, A2, and A3 are independently hydrogen, halogen, cyano, thiocyanato, or —OCF3; R1 is hydrogen, halogen, C1-C12 alkyl, C1-C12 alkoxy, C1-C12 haloalkyl, C2-C12 alkenyl, or C2-C12 alkynyl; R2 is hydrogen, halogen, C1-C6 alkyl, C1-C6 haloalkyl, cyano, or —OCF3; and Z is —O—, —CH2O—, —C(O)O—, —OCO—, —C(O)NH—, —CH?CH—, or —C?C—. In another embodiment, a liquid crystal display including the liquid crystal compound is also provided.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 16, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Jian-Wen Lin, Chun-Ming Wei, Shih-Hsien Liu, Kung-Lung Cheng, Chih-Lung Chin
  • Patent number: 8470198
    Abstract: The invention relates to novel calamitic mesogenic compounds which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the compounds, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: June 25, 2013
    Assignee: Merck Patent GmbH
    Inventors: Kevin Adlem, Owain Llyr Parri
  • Publication number: 20130153822
    Abstract: A blue phase liquid crystal material includes a liquid crystal host, a chiral reagent and a stable polymer. The chiral reagent is R811. The stable polymer is formed by photo-polymerizing a first monomer and a second monomer. The first monomer is 2-ethylhexyl acrylate (2-EHA), and the second monomer is 2-methyl-1,4-bis{4-[3(-acrylate)propoxyl]benzoicacid}phenylester (PTPTP). The blue phase liquid crystal material has a blue phase temperature range widened to an extremely low temperature. A blue phase liquid crystal composition and a method for manufacturing the blue phase liquid crystal material by using the blue phase liquid crystal composition are also provided.
    Type: Application
    Filed: November 1, 2012
    Publication date: June 20, 2013
    Applicants: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.
    Inventors: Infovision Optoelectronics (Kunshan) Co., Ltd., East China University of Science and Technology
  • Patent number: 8465672
    Abstract: The invention relates to mesogenic tetrahydropyran compounds having at least four rings, of the formula I in which R1, A1, A2, X1, L1, L2, m and n have the meanings indicated in Claim 1, and to a process for the preparation thereof, to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: June 18, 2013
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Markus Czanta, Atsutaka Manabe
  • Patent number: 8460577
    Abstract: The invention provides a compound represented by formula (1). In the formula (1), R1 is hydrogen, methyl or ethyl; X1 is a single bond, —O— or —OCO—; X2 is a single bond, —O—, —COO— or —OCO—; A1 and A2 are each independently a divalent aromatic ring or a divalent cyclohexane ring, and in these rings, arbitrary hydrogen may be replaced by halogen, alkyl having 1 to 3 carbons or halogenated alkyl having 1 to 3 carbons; Z1 is independently a single bond, —O—, —S—, —COO—, —OCO—, —CH2O—, —OCH2—, —CH?CH—COO—, —OCO—CH?CH—, —CH2CH2—COO—, —OCO—CH2CH2—, —CON(R)— or —N(R)CO—; R is hydrogen or methyl; Y is a terpenoid residue or a steroid residue; m is an integer from 0 to 20; and n is an integer from 0 to 3.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 11, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Mayumi Tanabe, Yoshiharu Hirai
  • Patent number: 8454856
    Abstract: A liquid crystal composition is provided that satisfies at least one characteristic among the characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a low viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or is properly balanced regarding at least two characteristics. An AM device is provided that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life, and so forth. The liquid crystal composition has a nematic phase, wherein the first component contains a specific five rings compound having a large optical anisotropy and a large dielectric anisotropy, the second component contains a specific compound having a low viscosity. The liquid crystal display device contains the liquid crystal composition having a nematic phase and the composition thereof.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: June 4, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Shigeru Kibe, Masayuki Saito
  • Patent number: 8454858
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of the formula II in which R1, R2, R3, R4, ring A, Z1, Z2 and m are as defined in Claim 1, and to the use thereof for an active-matrix display based on the ECB, VA, PS-VA, FFS, PALC or IPS effect.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: June 4, 2013
    Assignee: Merck Patent GmbH
    Inventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
  • Publication number: 20130122274
    Abstract: A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a combination of flow modifiers is provided. More particularly, one of the flow modifiers is a hydroxy-functional compound that contains or more hydroxyl functional groups. Without intending to be limited by theory, it is believed that the hydroxyl functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. Aromatic dicarboxylic acids are also employed as a flow modifier in the thermoplastic composition. Again, without intending to be limited by theory, it is believed that such acids can combine smaller chains of the polymer together after they have been cut by hydroxy-functional compounds. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: Ticona LLC
  • Patent number: 8440914
    Abstract: A liquid crystalline thermoset oligomer or polymer including a structural unit of Chemical Formulae 1 and 2; and a functional group of Chemical Formula A,
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: May 14, 2013
    Assignees: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.
    Inventors: Jae-Jun Lee, Kalinina Fedosya, Myung-Sup Jung
  • Publication number: 20130105732
    Abstract: A liquid crystal composition with which generation of an alignment defect in a polymer/liquid crystal composite exhibiting a polymer-stabilized blue phase can be reduced is provided. The liquid crystal composition includes a liquid crystal material exhibiting a blue phase; and a liquid crystalline monomer. In the liquid crystalline monomer, the chain length (the sum of carbon atoms and oxygen atoms) of an oxyalkylene group represented as Y in the following general formula (G1) is n (2?n?11). The liquid crystalline monomer has a lower phase transition temperature from a nematic phase to an isotropic phase (TNI) than liquid crystalline monomers including the oxyalkylene groups whose chain lengths are (n?1) and (n+1). In (G1), X represents a mesogenic skeleton; Y represents an oxyalkylene group (including carbon and oxygen), and includes hydrogen or fluorine; and Z1 and Z2 individually represent an acryloyl group or a methacryloyl group.
    Type: Application
    Filed: October 23, 2012
    Publication date: May 2, 2013
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Semiconductor Energy Laboratory Co., Ltd.
  • Patent number: 8425990
    Abstract: A liquid crystalline compound shown by the following formula (I). wherein R1 to R13 represent a hydrogen atom, a fluorine atom, a methyl group, a trifluoromethoxy group, or a cyano group, X represents —O—, —O—CO—, or the like, n is 0 or 1, and R14 represents -A-CO—CH?CH2, wherein A is a linking group. The liquid crystalline compound has a higher liquid crystal phase upper limit temperature, is chemically stable, can be inexpensively produced, and exhibits a large selective reflection wavelength zone ?? (a large ?n). A liquid crystalline composition comprising the liquid crystalline compounds, an optical film having a liquid crystal layer formed using the liquid crystalline composition, and an optical laminate comprising a substrate, an alignment film formed on the substrate, a liquid crystal layer formed using the liquid crystalline composition on the alignment film are also disclosed.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: April 23, 2013
    Assignee: Zeon Corporation
    Inventors: Seiji Okada, Kentarou Tamura
  • Patent number: 8404151
    Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a large elastic constant, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced between at least two of the characteristics; and is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: March 26, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Hiroaki Fujita, Norikatsu Hattori
  • Patent number: 8404150
    Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I in which the parameters have the meaning indicated in the specification, and optionally one or more compounds selected from the group of the compounds of the formulae II and III in which the parameters have the meaning indicated in the specification, and optionally one or more compounds of the formula IV in which the parameters have the meaning indicated in the specification, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 26, 2013
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Markus Czanta, Atsutaka Manabe, Lars Lietzau, Marcus Reuter, Brigitte Schuler, Elisabeth Meyer
  • Publication number: 20130069003
    Abstract: The present invention relates to a marking of polymeric liquid crystal material having determined optical characteristics allowing its authentication and reading by a machine and its authentication by the human eye. The marking is applied onto an item, good or article by a variable information printing process. The marking is in the form of indicia representing a unique code which allows for an easy authentication by the human eye and a secure tracking and tracing of the marked item, good or article throughout is life cycle.
    Type: Application
    Filed: June 25, 2012
    Publication date: March 21, 2013
    Applicant: SICPA HOLDING SA
    Inventors: Xavier MARGUERETTAZ, Frederic GREMAUD, Aurelien COMMEUREUC, Vickie ABOUTANOS, Thomas TILLER, Olivier ROZUMEK
  • Patent number: 8398886
    Abstract: The invention provides a liquid crystal composition that includes a specific compound having a negatively large dielectric anisotropy as a first component and a specific compound having a negatively large dielectric anisotropy as a second component, that optionally includes a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a negatively large dielectric anisotropy as a fourth component, and that has negative dielectric anisotropy, and provides a liquid crystal display device containing this composition.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: March 19, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Masayuki Saito
  • Patent number: 8394292
    Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising a dielectrically neutral or slightly positive component, component A, comprising one or more dielectrically neutral or slightly positive compounds of the formula I in which the parameters have the meaning indicated in the specification, and a dielectrically positive component, component B, comprising one or more dielectrically positive compounds, and optionally a second dielectrically neutral component, component C, and to liquid-crystal displays containing these media, especially active-matrix displays and in particular TN, IPS and FFS displays.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: March 12, 2013
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Michael Wittek, Brigitte Schuler, Volker Reiffenrath
  • Patent number: 8394293
    Abstract: The present invention relates to thiophene derivatives, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays comprising same.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: March 12, 2013
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Axel Jansen, Detlef Pauluth, Harald Hirschmann, Markus Czanta
  • Patent number: 8394294
    Abstract: The invention provides a liquid crystal compound which has stability to heat, light and so forth, a nematic phase in a wide temperature range, a small viscosity, a large optical anisotropy, and a suitable elastic constant K33, and further has a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. Moreover, the invention provides a liquid crystal composition comprising this liquid crystal compound and a liquid crystal display device containing this liquid crystal composition. A liquid crystal compound represented by formula (a): for example, R1 and R2 are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1 and ring A2 are 1,4-phenylene or trans-1,4-cyclohexylene; L1 and L2 are hydrogen or fluorine, and at least one of L1 and L2 is fluorine; and Z1 and Z2 are a single bond, —(CH2)2—, —CH?CH—, —CH2O— or —OCH2—.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: March 12, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Masahide Kobayashi
  • Publication number: 20130056681
    Abstract: The fully-aromatic thermotropic liquid crystal polyester resin composition of the present invention comprises 100 parts by mass of a fully-aromatic thermotropic liquid crystal polyester; and 50 to 150 parts by mass of titanium oxide, wherein the fully-aromatic thermotropic liquid crystal polyester comprises a repeating structural unit represented by the following formula (1), a repeating structural unit represented by the following formula (2), and a repeating structural unit represented by the following formula (3), and comprises 65 mole % to 78 mole % of the repeating structural unit represented by the formula (1). wherein X and Y each represent a divalent group having an aromatic ring.
    Type: Application
    Filed: March 14, 2011
    Publication date: March 7, 2013
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Toru Kitai, Toshio Nakayama, Satoshi Murouchi
  • Patent number: 8388861
    Abstract: A LC compound and a LC mixture are provided. The LC mixture includes a compound represented by (I) and at least one compound selected from a group consisting of compounds represented by (II) to (IV): in which X1 is F, —Cl, —CF3, or —OCF3; R, R11, and R12 are independently H, a C1-C15 alkyl group, or a C2-C15 alkenyl group; A1 is 1,4-phenylene; A11, A12, A13, and A14 are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; at least one of A2, A3, and A4 is 2,5-indanylene, and the others are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; L1 is —F2CO—; Z11, Z12, and Z13 are independently a single bond, —O—, —F2CO—, or —COO—; m is 1; n, o and p are independently 0, 1, 2 or 3, and n+o+p?3.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 5, 2013
    Inventors: Chun-Chih Wang, Wen-Chung Chu, Ren-Jie Chiou, Shi-Zhi You, Hong-Wei Zhang, Yu-Dong Tan
  • Patent number: 8388860
    Abstract: Isomannide-based compounds having chiral properties are provided, in addition to liquid crystal compositions and polymer networks derived therefrom.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: March 5, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Marc B Goldfinger, Kai Qi
  • Publication number: 20130048913
    Abstract: The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided: R1?CF2?nR2??(1) wherein, for example, R1 is alkyl having 4 to 10 carbons or —(CH2)2—CH?CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: Hiroyuki TANAKA, Sayaka FUJIMORI