Containing Nonsteryl Liquid Crystalline Compound Of Specified Structure Patents (Class 252/299.6)
  • Patent number: 8974693
    Abstract: The present invention relates to a liquid-crystalline medium, characterized in that it contains a polymerizable component (A) containing one more polymerizable 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: March 10, 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: 8974873
    Abstract: The present invention provides compositions, devices and methods related to the alignment of materials including polymers. In some cases, the present invention comprises the assembly of molecules (e.g., polymers) via intermolecular interactions to produce extended networks, which may have enhanced properties relative to the individual molecules. Such networks may be advantageous for use in electronics, photovoltaics, sensor applications, and the like. In some embodiments, the present invention may enhance the performance of certain optical devices, such as liquid crystal displays (e.g., color liquid crystal displays) by providing enhanced contrast ratio, faster response times, and/or lower operating voltage.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 10, 2015
    Assignee: Massachusetts Institute of Technology
    Inventor: Timothy M. Swager
  • Patent number: 8968596
    Abstract: The present invention provides a liquid crystal reactive monomer on a polyimide surface of an alignment film and a liquid crystal panel. The liquid crystal reactive monomer has a hard core and is contained in a liquid crystal composition. The liquid crystal reactive monomer is represented by the formula (I) or the formula (II), and the molecular weight thereof is greater than or equal to 300. The solubility of the liquid crystal RMs is significantly improved in a liquid crystal matrix while the returning force of liquid crystal molecules is increased, so as to solve the image sticking issue, increase the polymerization capacity of the liquid crystal molecules, raise the curing speed of the curing reaction between the liquid crystal RMs and the polyimide surface and shorten the curing time, so that the purpose of energy saving and carbon reduction can be achieved.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: March 3, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Chung-Ching Hsieh
  • Patent number: 8968598
    Abstract: A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics is provided; and an AM device having a short response time, a suitable pretilt, a large voltage holding ratio, a large contrast ratio, a long service life and so forth is provided. A solution is a liquid crystal composition containing a specific compound having a high maximum temperature and a large dielectric anisotropy as a first component and a polymerizable compound as a second component, and a liquid crystal display device including the composition.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 3, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Masayuki Saito, Yoshinari Matsumura
  • Patent number: 8968597
    Abstract: 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 negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or that is suitably balanced between at least two of the characteristics, is described. The liquid crystal composition includes a compound having three or more polymerizable groups as a first component and a compound having one or two polymerizable groups as a second component in a suitable ratio, and that may include a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a third component or a specific compound having a small viscosity or a high maximum temperature as a fourth component.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: March 3, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Subaru Kawasaki, Eriko Kurihara
  • Patent number: 8961824
    Abstract: To provide a liquid crystal composition satisfying at least one characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio and contrast ratio, and a long life. A liquid crystal composition has a nematic phase and contains a specific straight-chain compound as a first component and a specific compound having a large dielectric anisotropy as second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having a high maximum temperature or large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: February 24, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
  • Patent number: 8956548
    Abstract: The present, invention relates to liquid crystal compositions having a smectic A structure for use in an optical device in which the composition is sandwiched between a pair of electrodes (12-15). In essence the composition includes a siloxane oligomer (component (a)) which may be seen to construct a layered SmA system of particular spacing and “strength”. Within this structure a low molar mass nematic mesogen (component (c)) is provided that may be considered to be that of a “plasticiser” which moderates the layer “strength”, while simultaneously providing tuneability to the properties of the composition, e.g. its refractive index or dielectric anisotropy. The addition of a side chain liquid crystal polysiloxane (component (d)) allows such systems to be further moderated since they can be considered as binding together the la>¾rs, both within a given layer and between layers.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: February 17, 2015
    Assignees: Dow Corning Corporation, Cambridge Enterprise Limited
    Inventors: Terry Victor Clapp, William Alden Crossland, Anthony Bernard Davey, Martin Grasmann, Jonathan Paul Hannington, Russell Keith King, Mikhael Pivnenko, Steven Robson, Huan Xu
  • 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: 8956550
    Abstract: The present invention relates to a liquid-crystalline medium, characterized in that it contains a polymerizable component (A) containing one more polymerizable 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: 8940186
    Abstract: Disclosed herein are an insulating layer composition for a substrate, including a soluble type liquid crystal thermosetting oligomer, a metal alkoxide compound, and graphene oxide, and an insulating film and a substrate using the same. The insulating layer composition according to the present invention can effectively lower a coefficient of thermal expansion thereof, and thus, a dimensional change due to heat can be minimized when the insulating layer composition is used as an insulation material of the substrate, resulting in a substrate having improved thermal stability.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 27, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Soo Young Ji, Suk Jin Ham, Seung Hwan Kim, Do Young Kim
  • Patent number: 8940185
    Abstract: To provide a novel liquid crystal compound having general physical properties necessary for the compound, namely, stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility with other compounds, a large refractive index anisotropy, a large dielectric anisotropy and a small viscosity. The liquid crystal compound is provided as compound (1): wherein, for example, R1 is alkyl having 1 to 20 carbons; ring A1 and ring B1 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond, —CH2CH2—, —CH?CH— or —C?C—; L1 is fluorine; L2, Y1 and Y2 are hydrogen, fluorine or chlorine; and X1 is halogen, —C?N or alkyl having 1 to 10 carbons, and in the alkyl, arbitrary —CH2— may be replaced by —O— or —S—, and m is 1 and n is 0.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 27, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Hiroyuki Tanaka
  • Patent number: 8940184
    Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: January 27, 2015
    Assignee: MERCK PATENT GmbH
    Inventors: Andreas Taugerbeck, Achim Goetz
  • Patent number: 8932702
    Abstract: A spin-on dielectric of novel composition formed as a sol comprising an a source of silicon such as an orthosilicate ester, alone or in combination with an alkylated orthosilicate ester, a polar solvent, water, an acid catalyst, which may be a strong acid catalyst, and an amphiphilic block copolymer surfactant, optionally including an organic acid, a co-solvent and/or a reactive solvent. Also provided is a method of formulating the sol, a film made from the spin-on dielectric that has desirable electrical and mechanical properties, methods for treating the film described to optimize the film's electrical and mechanical performance, and methods for depositing the film onto silicon, steel or other surfaces.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: January 13, 2015
    Assignee: SBA Materials, Inc.
    Inventors: Mark L. F. Phillps, Travis P. S. Thoms
  • 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: 8906261
    Abstract: The present invention relates to liquid-crystalline media (LC media) comprising thiophene derivatives and to liquid-crystal displays (LC displays) containing these LC media. The media have high optical anisotropy and preferably have a content of thiophene derivatives of 25% by weight or more.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: December 9, 2014
    Assignee: MERCK PATENT GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Axel Jansen
  • Patent number: 8906260
    Abstract: To provide a liquid crystal compound showing a large absolute value of dielectric anisotropy (|??|. A compound is represented by formula (1): wherein, in formula (1), Ra and Rb are fluorine, alkyl having 1 to 10 carbons or the like, and in the alkyl, at least one of —CH2— may be replaced by —O— or the like, however, Ra and Rb are not identical; A1, A2, A3, A4 and A5 are 1,4-cyclohexylene, 1,4-phenylene or the like, and in the groups, at least one of hydrogen may be replaced by fluorine; Z1, Z2, Z4 and Z5 are a single bond or the like; Y1, Y2, Y3 and Y4 are hydrogen, fluorine or the like; and m, n, q and r are 0, 1 or 2, and a sum of m, n, q and r is 0, 1, 2, 3 or 4.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: December 9, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Yasuyuki Sasada
  • Patent number: 8900479
    Abstract: Provided is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or having a suitable balance regarding at least two of the characteristics. Also provided is an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component, a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: December 2, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Eriko Kurihara, Maiko Ito
  • Patent number: 8889035
    Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat; a liquid crystal composition having a suitable balance regarding at least two thereof; and an AM device having short response time, large voltage holding ratio and contrast ratio, long life and so forth. The liquid crystal composition has nematic phase, and contains as a first component a specific compound having large dielectric anisotropy and as a second component a specific compound having small viscosity, and may contain as a third component a specific compound having high maximum temperature or large dielectric anisotropy, and as a fourth component a specific compound having high maximum temperature or small viscosity, and a liquid crystal display device includes the composition.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: November 18, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Hiroyuki Tanaka
  • Patent number: 8883037
    Abstract: Chiral liquid crystal compounds of the general formula (1): in which at least one of R1 and R2 is a chiral substituent, K may be a single bond or the same as K1-5 and K1-5 denote a six-membered ring system which rings may be at least partially unsaturated, wherein the number of atoms in these rings or ring systems between the two atoms forming a part of the link to the next ring, or to one of the substituents R1 and R2, does not differ by more than one if counted in the clockwise, and in the counter-clockwise sense, starting from the same atom in each case, X1-20 denote alkyl, or alkoxy, or fluorinated alkyl, or fluorinated alkoxy groups, or atom H, or halogen atoms, mixtures comprising such chiral liquid crystal compounds, and liquid crystal displays comprising such mixtures as active ingredients.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: November 11, 2014
    Assignee: Tetragon LC Chemie AG
    Inventors: Wolfgang Haase, Artsiom Lapanik
  • Patent number: 8877092
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, ring A have the meanings indicated in claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: November 4, 2014
    Assignee: MERCK PATENT GmbH
    Inventors: Melanie Klasen-Memmer, Volker Reiffenrath, Konstantin Schneider, Andreas Waechtler, Elvira Montenegro
  • Publication number: 20140312274
    Abstract: Subject It is to provide a polymerizable compound having a high polymerization reactivity, a high conversion yield and a high solubility in a liquid crystal composition, a polymerizable composition including this compound, a liquid crystal composite prepared from this polymerizable composition and a liquid crystal display device containing this composite. Means for solving the Subject A compound represented by formula (1), the liquid crystal composition and the liquid crystal display device. In the formula, for example, ring A1, ring A2 and ring A4 are phenylene or cyclohexylene; Sp1 and Sp2 are a single bond or alkylene having 1 to 6 carbons; Z1 and Z2 are —CH?CH— or —C?C—; a is 1, b is 0; and P1 and P2 are a polymerizable group.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 23, 2014
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: Yasuyuki GOTOH, Kazuo OKUMURA
  • Patent number: 8865272
    Abstract: In an embodiment of the present disclosure, a liquid crystal display is provided. The liquid crystal display includes an upper substrate, a lower substrate opposite to the upper substrate, and a liquid crystal layer disposed between the upper substrate and the lower substrate, wherein the liquid crystal layer includes a first chiral compound and a second chiral compound, and the first chiral compound and the second chiral compound are enantiomeric and separated from each other.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: October 21, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-Rong Wang, Chih-Lung Chin, Wan-Chi Chen, Kung-Lung Cheng, Shih-Hsien Liu
  • Patent number: 8858830
    Abstract: A liquid crystal composition is described, which exhibits an optically isotropic liquid crystal phase and contains an achiral component T and a chiral dopant. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1) in an amount of 32 wt % to 85 wt %, wherein R1 is alkyl, for example; L1, L2, L3, L4, L5 and L6 are each independently hydrogen or fluorine; Z1 and Z2 are each independently a single bond or —CF2O—, with at least one of Z1 and Z2 being —CF2O—; and X1 is halogen, for example.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 14, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Shin-Ichi Yamamoto, Yasuhiro Haseba
  • Patent number: 8858829
    Abstract: The present invention intends to provide a novel cyclohexane compound that can form a liquid crystal composition of which response speed is improved when mixed with a nematic liquid crystal and the like and to provide a specified liquid crystal composition in which a novel cyclohexane compound is mixed. The novel cyclohexane compound is represented by the following formula (1). (In the formula (1), R1 and R2 represent the same or different R, ROCO or RCOO, and the R represents an alkyl group. The alkyl group may have an unsaturated bond, and, in the group, —CH2— may be substituted with —O—, —CO— or —COO—, and a part of or an entirety of hydrogen atoms may be substituted with a halogen atom or a cyano group. X and Y each independently represents a halogen atom or a hydrogen atom and does not simultaneously represent a hydrogen atom. Further, alternatively, X represents an oxygen atom and Y represents a direct bond to the oxygen atom.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: October 14, 2014
    Assignees: Organo Science Co., Ltd., Chiracol Co., Ltd.
    Inventors: Kazuo Okamoto, Toshihiro Shibata
  • Patent number: 8840807
    Abstract: To provide a polymerizable compound having a high solubility in a liquid crystal composition, and laterally having a ring structure; a liquid crystal composition containing the compound, and a liquid crystal display device using the composition; and the polymerizable compound includes a compound represented by formula (1): wherein, for example, R1 is hydrogen or alkyl having 1 to 20 carbons, R2 and R3 are each independently hydrogen or methyl; A1 and A2 are a single bond, 1,4-phenylene or 1,4-cyclohexylene; Z1 is a single bond or alkylene having 1 to 3 carbons, Z2 is —O—, —COO—, —OCO— or alkylene having 1 to 6 carbons, Z3 is a single bond or —O—, Z4 is a single bond or alkylene having 2 to 20 carbons; X1 is hydrogen, halogen or alkyl having 1 to 3 carbons; and a is 0 or 1.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: September 23, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Maiko Ito
  • Patent number: 8834744
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I in which R0, X0 and L1-6 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: September 16, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Reiffenrath Volker, Mark Goebel, Markus Czanta
  • Patent number: 8821757
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula (I), in which R0 has the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Lars Lietzau
  • Patent number: 8821755
    Abstract: A liquid composition containing a liquid crystal polyester, comprising (1) 15 to 40% by weight of a liquid crystal polyester, and (2) 60 to 85% by weight of a solvent containing N-methylpyrrolidone, wherein the liquid composition has a viscosity of 1.5 Pa·s or larger measured at 23° C., and the total of the liquid crystal polyester and the solvent is 100% by weight.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 2, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tomoko Uehara
  • Patent number: 8815117
    Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 26, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xing Feng, Xinhui Zhong
  • Patent number: 8801965
    Abstract: The present invention provides a liquid crystal medium composition and a liquid crystal display panel manufactured with same. The liquid crystal medium composition includes a negative type liquid crystal material, a polymerizable monomer, a sensitizer, and stabilizer. The sensitizer is an organometallic complex that has an amount of 0.01%-5% of total mass of the liquid crystal composition and has a strong absorption of ultraviolet light having a wavelength of 300-450 nm. The sensitizer converts the primary wavelength range of ultraviolet light for reaction of the polymerizable monomer from 200-300 nm to 300-450 nm, staying away from the absorption band of the liquid crystal material and reducing damages caused on the liquid crystal material and the alignment material of polyimide, thereby heightening reaction efficiency and homogeneity of the polymerizable monomer and the quality and lifespan of the liquid crystal display panel.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: August 12, 2014
    Assignee: Shenzen China Star Optoelectronic Technology co., Ltd.
    Inventors: Xinhui Zhong, Kuancheng Lee
  • Patent number: 8801966
    Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a cyclopentane group and at least two other rings. In one embodiment, the liquid crystal compounds of the invention comprise a cyclopentane group and at least two other rings, one of which is a fused ring system.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: August 12, 2014
    Assignee: VVI Bright China Ltd.
    Inventors: Xinhua Chen, R. Amaranatha Reddy
  • Patent number: 8795552
    Abstract: The invention relates to a liquid-crystalline medium containing one or more compounds of the formula I and one or more compounds selected from the group of the compounds of the formula IA to IE in which R0, R1, R2, X0, X1, X2, A1, Z1, m, p, q, v have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: August 5, 2014
    Assignee: Merck Patent GmbH
    Inventors: Mingchou Wu, Martin (Kelun) Shu, Carol (Yi-Hsuan) Lin, Mark Verrall
  • Patent number: 8795553
    Abstract: A liquid crystal composition is described, which contains a two-ring compound having a large optical anisotropy and a negatively large dielectric anisotropy as a first component, and a two-ring compound having a negatively large dielectric anisotropy and a small viscosity as a second component, and may further contain at least one of a compound having a small viscosity as a third component, a compound having a negatively large dielectric anisotropy as a fourth component, and a compound having an especially negatively large dielectric anisotropy as a fifth component. An AM liquid crystal display device containing the liquid crystal composition is also described.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 5, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Norikatsu Hattori, Kazuhiko Saigusa
  • Patent number: 8790544
    Abstract: It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: July 29, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Tadayuki Kameyama, Sadahiro Nakanishi, Toru Umemoto
  • Patent number: 8790545
    Abstract: A composition for a liquid crystal film includes: 100 parts by weight of a vertically aligned liquid crystal mixture; 0.001-20 parts by weight of a chiral dopant; and 50-900 parts by weight of a solvent.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: July 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dae-Hee Lee, Belyaev Sergey, Moon-Soo Park
  • Patent number: 8784684
    Abstract: A compound which has a benzoxazinone ring and an aromatic ring that directly bonds to the benzoxazinone ring, and has a mesogenic core substituted by a substituent having a polymerizable functional group is excellent in terms of durability, colorless, and exhibits a high ?n while having an azomethine bond.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: July 22, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Satoshi Shimamura, Mitsuyoshi Ichihashi
  • Patent number: 8778466
    Abstract: The present invention relates to a liquid-crystal display of the PSA (polymer sustained alignment) type, and to novel liquid-crystal media and novel polymerizable compounds for use in PSA displays.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: July 15, 2014
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck
  • Patent number: 8778223
    Abstract: Provided are compounds useful for use in liquid crystal mixtures to improve the properties of the mixture. In embodiments, the compound has two cyclohexyl ring and a tail containing one more fluorine atoms.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: July 15, 2014
    Assignee: LC Vision, LLC
    Inventor: Michael Wand
  • Patent number: 8765011
    Abstract: To provide a liquid crystal compound having general physical properties required for the compound, namely, a high stability to heat, light and so forth, a small viscosity, a refractive index anisotropy value having a suitable magnitude, a dielectric constant anisotropy value having a suitable magnitude and steep electro-optical characteristics, a wide temperature range of a nematic phase, and an excellent compatibility with other liquid crystal compounds, in particular, a liquid crystal compound having a wide temperature range of the nematic phase; the compound is represented by formula (1): wherein R is alkenyl having 2 to 20 carbons; ring A1 and ring A2 are independently 1,4-cyclohexylene, or 1,4-phenylene in which at least one of hydrogen may be replaced by fluorine; Z1 and Z2 are independently a single bond, —CH2CH2—, —CH?CH—, —CH2O— or —OCH2—; and n is 0 or 1.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: July 1, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Teizi Satou, Yasuyuki Goto
  • Patent number: 8765013
    Abstract: A polymerizable compound-containing liquid crystal composition includes at least one of compounds represented by general formulae (I) to (IV). A liquid crystal display device uses the liquid crystal composition.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 1, 2014
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Publication number: 20140176896
    Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.
    Type: Application
    Filed: October 16, 2012
    Publication date: June 26, 2014
    Inventors: Xing Feng, Xinhui Zhong
  • 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
  • Patent number: 8753537
    Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: June 17, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xing Feng, Xinhui Zhong
  • Patent number: 8721921
    Abstract: To provide a liquid crystal polyester composition that yields compacts that are resistant to cracking. A plate-like filler with a volume-average particle size of 14 ?m or greater and a fibrous filler are combined with a liquid crystal polyester to form a liquid crystal polyester composition. The total content of the plate-like filler and the fibrous filler is 45-55 wt % with respect to the total of the liquid crystal polyester composition. The weight ratio of the fibrous filler content to the plate-like filler content is greater than 0.5 and not greater than 0.65.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiyuki Fukuhara, Shintaro Komatsu
  • Patent number: 8715527
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I and one or more compounds selected from the compounds of the formulae IA and IB in which R1, R2, L1-4, X1 and X2 have the meanings indicated in claim 1.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: May 6, 2014
    Assignee: Merck Patent GmbH
    Inventors: Georg Luessem, Christian Hock, Brigitte Schuler, Eike Poetsch
  • Patent number: 8709281
    Abstract: A liquid crystal composition comprising a chiral dopant compound represented by the following structure (Structure 1): wherein: R1 and R2 are independently hydrogen, —(C?O)R9, —(C?O)R10, alkyl, aryl, alkaryl, alkenyl, cycloalkyl, alkoxyaryl, or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; and R3-R9 are as described in the disclosure. Also featured are liquid crystal compositions comprising a chiral dopant compound represented by any of Structure 2-4 as described in the disclosure.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: April 29, 2014
    Assignee: Kent State University
    Inventors: Donald R. Diehl, Erica N. Montbach
  • Patent number: 8709280
    Abstract: Polar nematic compounds having the following structure: where is a caged boron structure. The sphere of the caged boron structure is C and each non-sphere vertex of the caged boron structure is B—H. R is H, an alkyl, a cycloalkyl, a bicycloalkyl, an alkenyl, a cycloalkenyl, a bicycloalkenyl, an alkynyl, an acyl, an aryl, an alkylaryl, a halogen, a cyano group, an isothiocyanoto group, or a group that forms an ether, a ketone, an ester, a thioester, a sulfide, or a sulfone. R? is H, an alkyl, a cycloalkyl, a bicycloalkyl, an alkenyl, a cycloalkenyl, a bicycloalkenyl, an alkynyl, an aryl, an alkylaryl, or a halogen. The compounds may be used in liquid crystal displays, and in television sets, laptop computers, computer monitors, hand-held communication devices, gaming devices, watches, cash registers, clocks, and calculators having liquid crystal displays.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: April 29, 2014
    Assignee: Vanderbilt University
    Inventors: Bryan Ringstrand, Piotr Kaszynski
  • Patent number: 8703013
    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: March 8, 2013
    Date of Patent: April 22, 2014
    Assignee: Merck Patent GmbH
    Inventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
  • Patent number: 8703012
    Abstract: To provide a liquid crystal composition satisfying at least one characteristic such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a suitable optical anisotropy, a large negative 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; an AM device having a short response time, a large voltage holding ratio and contrast ratio, a long service life and so forth; wherein the liquid crystal composition contains a specific compound having a polymerizable group as a first component, and may contain a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: April 22, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Eriko Kurihara
  • 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