Containing Nonchiral Additive Having No Specified Mesophase Patents (Class 252/299.5)
  • Publication number: 20140231711
    Abstract: The present invention provides a liquid crystal medium composition for use in liquid crystal display, which includes the following constituent components: a negative type liquid crystal material, a stabilizer, and two or more than two polymerizable monomers that undergo polymerization reactions under UV radiation. The polymerizable monomers are in an amount of 0.1-1% by weight based on total weight of the liquid crystal medium composition. The polymerizable monomers have a structural formula composed of a single benzene ring, two benzene rings, or a naphthalene ring. The structural formula composed of two benzene rings is formed by two benzene rings that are directly linked or linked via a moiety. The benzene ring and naphthalene ring are directly linked at least one polymerizable moiety. Through use of two or more than two polymerizable monomers in the liquid crystal medium composition, polymer bumps having a small size and excellent homogeneity can be obtained.
    Type: Application
    Filed: July 6, 2012
    Publication date: August 21, 2014
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xinhui Zhong
  • Publication number: 20140232977
    Abstract: The invention relates to bimesogenic compounds of formula I R1-MG1-Sp-MG2-R2??I wherein R1, R2, MG1, MG2 and Sp have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention. Furthermore the invention relates to bimesogenic compounds of formula I inducing a second nematic phase in nematic mixtures that do not show this additional phase without compounds of formula I.
    Type: Application
    Filed: June 12, 2012
    Publication date: August 21, 2014
    Applicant: MERCK PATENT GMBH
    Inventors: Kevin Adlem, David Wilkes, Patricia Eileen Saxton, Benjamin Snow, Rachel Tuffin, Owain Llyr Parri, Geoffrey Luckhurst
  • Patent number: 8808813
    Abstract: The present invention provides a method of producing a liquid crystalline coating liquid that substantially does not contain a fine crystal. The method of producing a liquid crystalline coating liquid of the present invention contains a heating step of heating a treatment liquid containing a lyotropic liquid crystalline compound containing an impurity, and a solvent, a depositing step of depositing a deposit by cooling the treatment liquid after the heating step to a temperature lower than 40° C., and a removing step of removing the deposit from the treatment liquid.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: August 19, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Toru Umemoto, Tadayuki Kameyama
  • Patent number: 8801964
    Abstract: Polymer network liquid crystal materials have improved mechanical properties such as rigidity and hardness and substantially improved electro-optical performance. The PNLC material can be manufactured with an emulsion process so as to simplify substantially the manufacturing process. Each LC droplet can be configured with the polymer network extending substantially across the LC droplet, and the polymer network may comprise a material to lower substantially the switching voltage, such as a fluorinated acrylate that may interact with the liquid crystal so as to lower the surface tension of the LC droplet. The PNLC material may comprise an interfacial layer combined with the polymer network so as to decrease substantially the driving voltage.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: August 12, 2014
    Assignee: Photon Dynamics, Inc.
    Inventor: Xianhai Chen
  • 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: 8784682
    Abstract: Disclosed are a thermosetting composition including a liquid crystal oligomer, a bismaleimide-based compound, an epoxy compound, and a fluorinated polymer resin powder. A resin cured product, board, and storage medium each include the thermosetting composition.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: July 22, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.
    Inventors: Myung-Sup Jung, Jae-Jun Lee
  • Patent number: 8784683
    Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester having different structural units and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length (Mw) of 200 to 500 ?m, and content of specific glass fiber having fiber length of not less than 1500 ?m is 0.1 to 5.0 percent by weight to a total amount of the glass fiber.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: July 22, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
  • Patent number: 8778222
    Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length of 30 to 100 ?m, and content of specific glass fiber having fiber length of 300 to 500 ?m is 0.1 to 5 percent by weight to a total amount of the glass fiber.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: July 15, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
  • Patent number: 8778220
    Abstract: Disclosed are a wholly aromatic liquid crystal polyester resin compound and a preparation method thereof. The disclosed wholly aromatic liquid crystal polyester resin compound comprises a wholly aromatic liquid crystal polyester resin having a high melting point, and an inorganic filler having a high thermal conductivity. In addition, the disclosed wholly aromatic liquid crystal polyester resin compound can be prepared by using a twin screw extruder having a barrel temperature of 350 to 450° C.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: July 15, 2014
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Myung Se Lee, Youn Eung Lee, Young Hak Shin, Jin Kyu Lee, Mahn Jong Kim
  • Patent number: 8778221
    Abstract: An aromatic amide compound having the following general formula (I) is provided: wherein, X1 and X2 are independently C(O)HN or NHC(O); G1, G2 and G3 are independently hydrogen, C(O)HN-phenyl, or NHC(O)-phenyl, wherein at least one of G1, G2 and G3 is C(O)HN-phenyl or NHC(O)-phenyl; Q1, Q2, and Q3 are independently hydrogen, C(O)HN-phenyl, or NHC(O)-phenyl, wherein at least one of Q1, Q2, and Q3 is C(O)HN-phenyl or NHC(O)-phenyl; R5 is halo, haloalkyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, or heterocyclyl; and m is from 0 to 4.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: July 15, 2014
    Assignee: Ticona LLC
    Inventors: Kamlesh P. Nair, Steven D. Gray
  • Patent number: 8753536
    Abstract: Method of preparation of surface coating of variable transmittance and an electro-optical layered appliance including the same comprises dispersing of liquid crystal microdroplets in hydrolyzable and polymerizable precursors and applying obtained mixture on a surface by spraying. Applying the material to the surface by spraying is intrinsically related to the synthesis processes because the properties of the surrounding environment (i.e. content of water and acidity, UV radiation) and the chemical reactions that take place during spraying have considerable influence on the properties (i.e. driving voltage, thickness of obtained layer). Obtained layered appliance comprises of a matrix material with dispersed microdroplets of liquid crystal obtained by the described method, electrically conductive transparent electrodes with contacts, a dielectric material, substrate and covering layers.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: June 17, 2014
    Assignees: University of Tartu, Estonian Nanotechnology Competence Centre
    Inventors: Martin Timusk, Martin Järvekülg, Kristjan Saal, Rünno Lõhmus, Ilmar Kink, Ants Lõhmus
  • Patent number: 8736795
    Abstract: A retardation element includes an alignment film and a retardation layer in contact with a surface of the alignment film, and the retardation layer is formed by applying a paint containing a liquid crystal monomer and a non-liquid crystal monomer on the surface of the alignment film and then polymerizing the paint while the liquid crystal monomer is placed in an alignment state.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 27, 2014
    Assignee: Dexerials Corporation
    Inventors: Moriaki Okuno, Yukari Tsunoda, Harumi Sato, Kentaro Okuyama, Masashi Enomoto
  • Patent number: 8734677
    Abstract: A liquid-crystal coating fluid which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein Q1 is an aryl group which may have any substituent group; Q2 is an arylene group which may have any substituent group; R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group which may have any substituent group; and M is a counter ion.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 27, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Kyoko Ishii, Tadayuki Kameyama
  • Patent number: 8734679
    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 its life cycle.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: May 27, 2014
    Assignee: Sicpa Holding SA
    Inventors: Xavier Marguerettaz, Frédéric Gremaud, Aurélien Commeureuc, Vickie Aboutanos, Thomas Tiller, Olivier Rozumek
  • Patent number: 8734678
    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: Grant
    Filed: June 25, 2012
    Date of Patent: May 27, 2014
    Assignee: SICPA Holding SA
    Inventors: Xavier Marguerettaz, Frédéric Gremaud, Aurélien Commeureuc, Vickie Aboutanos, Thomas Tiller, Olivier Rozumek
  • Patent number: 8715528
    Abstract: The invention discloses a reflective liquid crystal material formulation, wherein a liquid crystal component of high dielectric anisotropy is employed to lower the driving voltage. By modulating the addition ratio of the high dielectric anisotropy components, reflective liquid crystal compositions of different reflective colors can be driven by a single driving voltage. The invention also provides a reflective bistable display using the above formulation.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: May 6, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: An-Cheng Chen, Pei-Chen Huang, Chien-Hsien Cheng, Chun-Ming Wu, Shih-Hsien Jassy Liu, Kung-Lung Cheng
  • Patent number: 8715526
    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: Grant
    Filed: March 14, 2011
    Date of Patent: May 6, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Toru Kitai, Toshio Nakayama, Satoshi Murouchi
  • Publication number: 20140110630
    Abstract: The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises a) one or more compounds of the formula I and b) one or more compounds of the formula II in which the parameters have the respective meanings indicated in Claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula II.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Inventors: Mark GOEBEL, Eveline BARON, Rocco FORTTE, Detlef PAULUTH
  • Publication number: 20140111730
    Abstract: The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises a) one or more compounds of the formula I and b) one or more compounds of the formula III-O in which the parameters have the respective meanings indicated in Claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula III-O.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 24, 2014
    Applicant: MERCK PATENT GmbH
    Inventors: Mark GOEBEL, Eveline BARON, Rocco FORTTE, Detlef PAULUTH
  • Patent number: 8703011
    Abstract: The present invention provides a class of thermotropic liquid crystalline polyesters (TLCPs) and molding compositions comprising the polyesters and glass fiber. The TLCPs consist essentially of repeat units derived from p-hydroxybenzoic acid (HBA), 6-hydroxy-2-naphthoic acid (HNA), terephthalic acid (TA), and hydroquinone (HQ), and the mole percent of HBA, HNA, TA and HQ is 34-72%, 12-26%, 4-21% and 4-21%, respectively. The TLCPs have a melting temperature equal to or below 355° C., an inherent viscosity of 4.0-10.0 dL/g and a Heat Deflection Temperature (HDT) in the range of 260-285° C. when compounded with 30% by weight glass fiber. The optimum compositions, selected from the above-mentioned compositional ranges exhibit a relatively low melting temperature and a relatively high HDT. Specified compositions, selected from the above-mentioned compositional ranges have low melting point, which are useful to blend with conventional polymers such as poly (ethylene terephthalate) and nylon etc.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: April 22, 2014
    Inventors: Xiuzhen Wang, Haishan Bu, Wen Zhou
  • Patent number: 8697200
    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-stabilized) and PSA (polymer-sustained alignment) type.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: April 15, 2014
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Erdal Durmaz, Malgorzata Rillich, Andreas Taugerbeck
  • Publication number: 20140085592
    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: a liquid crystal material, a polymerizable monomer and a sensitizer. The liquid crystal material comprises an alkenyl compound which is stable to the polymerization reaction during the polymerization of the polymerizable monomer. The sensitizer has strong absorbability within the wavelength range of 300-360 nm of the ultraviolet light. The liquid crystal display comprising: an upper substrate and a lower substrate which are parallel with each other, and a mixture for liquid crystal medium provided between the upper substrate and the lower substrate. The sensitizer according to the present invention has strong absorbability within the wavelength range of 300-360 nm of the ultraviolet light, which allows the response wavelength of the polymerizable monomer shifting to longer wavelength.
    Type: Application
    Filed: October 16, 2012
    Publication date: March 27, 2014
    Applicant: Sheznhen China Star Optoelectronics Technology Co. Ltd.
    Inventors: Xing Feng, Yubo Gu, Liuyang Yang, Xinhui Zhong
  • Patent number: 8673175
    Abstract: A method of recycling a cholesteric liquid crystal is provided. The method includes providing a display medium material containing a micro-encapsulated cholesteric liquid crystal. The display medium material is mixed with a hydrophilic solvent to form a mixture having a temperature of between 70° C. and 100° C. Then, a hydrophobic solvent is added to mix with the hydrophilic solvent. The display medium material, the hydrophobic solvent and the hydrophilic solvent are mixed to form a mixture having a hydrophobic layer and a hydrophilic layer. The hydrophobic layer and the hydrophilic layer of the mixture are separated, wherein the hydrophobic layer contains a cholesteric liquid crystal and the hydrophobic solvent. Then, the hydrophobic solvent is removed from the hydrophobic layer to obtain the cholesteric liquid crystal.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 18, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Pei-Chen Huang, Chih-Lin Su, Kuo-Chang Wang, Shih-Hsien Liu, Kung-Lung Cheng
  • Patent number: 8673176
    Abstract: A method of reusing micro-encapsulated cholesteric liquid crystals is provided. The method includes providing a display medium material containing a micro-encapsulated cholesteric liquid crystal and a dispersant. The display medium material is mixed with a solvent to form a mixture having a temperature of between 40° C. and 60° C. A centrifugal process is performed to the mixture for separating the micro-encapsulated cholesteric liquid crystal and the dispersant. Then, the dispersant and the solvent are removed to obtain the micro-encapsulated cholesteric liquid crystal.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 18, 2014
    Assignees: Industrial Technology Research Institute, Chang-Chun Plastics Co., Ltd.
    Inventors: Pei-Chen Huang, Chih-Lin Su, Kuo-Chang Wang, Shih-Hsien Liu, Kung-Lung Cheng
  • Patent number: 8668964
    Abstract: A novel dioxolane compound represented by the general formula (G1) is provided. In the general formula (G1), R1 and R2 separately represent any of hydrogen, an alkylene group having 1 to 6 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an alkylene group having 1 to 20 carbon atoms and a phenyl group as a substituent; a1 and a2 separately represent any of an alkylene group having 1 to 4 carbon atoms and a single bond; Ar1 and Ar2 separately represent an aryl group having 6 to 16 carbon atoms; and R3 to R38 separately represent any of hydrogen, an alkylene group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: March 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Momoko Kato, Yuko Kawata, Tetsuji Ishitani, Yasuhiro Niikura
  • Patent number: 8658058
    Abstract: The present invention relates to liquid-crystal emulsion for the use in a thermo-optical matrix to an early diagnosis of mammary gland neoplasmic lesions. It contains a mixture of thermotropic liquid crystals and polyvinyl alcohol. The liquid-crystal emulsion contains 14 to 48% by weight (on a dry matter basis) of the thermotropic compounds mixture and 50 to 86% by weight (on a dry matter basis) of polyvinyl alcohol. The present invention also relates to a method for preparing liquid-crystal emulsion.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 25, 2014
    Assignee: Braster SA
    Inventors: Jacek Bernard Stepień, Henryk Jaremek, Grzegorz Franciszek Pielak
  • Patent number: 8658057
    Abstract: A liquid crystal polyester resin composition for camera modules is used, the composition including, based on 100 parts by mass of the composition as a whole, (A) 49.5 to 69.5 parts by mass of a liquid crystal polyester, (B) 30.0 to 50.0 parts by mass of an irregular form or spherical powder having a Mohs hardness of 5 or higher and a primary particle diameter of 5 ?m or less, and (C) 0.5 to 5.0 parts by mass of carbon black. The use of the resin composition allows a reduction in the amount of dust generated (particles falling off) during the production of the camera, the use of the camera, and the operation of the camera modules. The resin composition has high surface hardness, is excellent in balance between heat resistance, stiffness, moldability, and resistance to falling of particles off a surface, and causes no malfunction during autofocus control.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: February 25, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Toshio Nakayama, Satoshi Murouchi
  • Patent number: 8658056
    Abstract: Methods are disclosed for separating and harvesting very small single domain ferroelectric nanoparticles by application of a non-uniform electric or magnetic field gradient. The disclosed methods enable collection of nanoparticles with permanent strong dipole moments for use in a wide variety of applications with greatly improved results.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: February 25, 2014
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Gary Cook, Dean R. Evans, Sergey Basun, Victor Y. Reshetnyak
  • Patent number: 8652352
    Abstract: Photoresponsive shape memory nanoparticles have a layered smectic ordering and include a photoresponsive moiety selected from the group consisting of azobenzene, stilbene, and spiropyran. Multiple cycles of contraction and extension in these materials can be controlled by UV and visible light. By changing light intensity and exposure time, the magnitude of actuation can be modulated.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: February 18, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Jawad Naciri, Jing C. Zhou, Banahalli R. Ratna
  • Patent number: 8647726
    Abstract: An optical element and a stereoscopic image display device are provided. The optical element is a light-dividing element, for example, an element that can divide incident light into at least two kinds of light having different polarized states. Therefore, the optical element can be used to realize a stereoscopic image.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: February 11, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Eun Mi Seo, Sin Young Kim, Kyun Il Rah, Moon Soo Park, Seung Hun Chae
  • Patent number: 8641924
    Abstract: An object is to provide a liquid crystal polyester resin composition capable of producing a molding in which the generation amount of particles is sufficiently reduced. The present invention provides a liquid crystal polyester resin composition including (1) a liquid crystal polyester, and (2) a fiber-shaped filler having a fiber diameter of 5 to 15 ?m and a number average fiber length of 30 to 200 ?m, wherein the content of a fiber having a fiber length of more than 200 ?m is 10% by mass or less based on 100% by mass of the amount of the fiber-shaped filler.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: February 4, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Satoshi Sekimura, Hirokazu Matsui, Hiroshi Harada
  • Patent number: 8642141
    Abstract: A liquid crystal composition including a dioxolane compound represented by the general formula (G1) as a chiral agent is provided. In the general formula (G1), R1 and R2 individually represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an alkyl group having 1 to 20 carbon atoms and having a phenyl group as a substituent; R1 and R2 may be bonded to each other to form a ring; R3 and R4 individually represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a cycloalkyl group; and R5 to R40 individually represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: February 4, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomohiro Tamura, Yasuhiro Niikura, Tetsuji Ishitani, Sachiko Kawakami, Yuko Kawata
  • Publication number: 20140016078
    Abstract: A liquid crystal display panel including a first substrate, a second substrate, a liquid crystal molecule layer, a first liquid crystal cell layer and a second liquid crystal cell layer is provided. The second substrate is disposed opposite to the first substrate. The liquid crystal molecule layer has a plurality of liquid crystal molecules and disposed between the first substrate and the second substrate. The first liquid crystal cell layer has a plurality of first liquid crystal cells and disposed between the first substrate and the liquid crystal molecule layer. The second liquid crystal cell layer has a plurality of second liquid crystal cells and disposed between the second substrate and the liquid crystal molecule layer. Moreover, a liquid crystal composition used to make the liquid crystal display panel and a fabricating method of liquid crystal panel are also provided.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 16, 2014
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chun-Wei Su, Kai-Hsien Yang, Jan-Tien Lien
  • Publication number: 20140014877
    Abstract: A liquid crystal orientation promoter including a compound represented by the following formula (I) is a material that exhibits a sufficient solubility, has a wide available concentration range, and exhibits excellent liquid crystal orientation promoting property [L1 to L6 represent a single bond, —O—, —CO—, —COO— and the like; Sp represents a single bond or an alkylene group having 1 to 10 carbon atoms; A1 and A2 represent a divalent aromatic hydrocarbon group or a heterocyclic group; T represents the following linking group or the like; Hb represents an alkyl fluoride group having 3 to 30 carbon atoms; k, l, m, n and p represent integers of 0 or more; and o represents an integer of 1 to 4].
    Type: Application
    Filed: September 17, 2013
    Publication date: January 16, 2014
    Applicant: Fujifilm Corporation
    Inventors: Masatoshi MIZUMURA, Shunya KATOH
  • Patent number: 8623238
    Abstract: The present invention relates to compounds represented by the following Formula Ic, in which R2-R6 can each independently be selected from hydrogen or hydrocarbyl (e.g., methyl); L1 and L4 are each independently a divalent linking group, such as a bond or —OC(O)—R8—C(O)O—, where R8 can be divalent hydrocarbyl (e.g., —CH2CH2—); each L2 and each L5 each independently represent a flexible segment, such as divalent linear or branched C1-C25 alkyl; each L3 and each L6 each independently represent a rigid segment including, for example, optionally substituted phenylen-1,4-diyl groups; t and s are each independently from 1 to 4; m and p are each independently from 0 to 4 for each t, provided that the sum of m and p is at least 1 for each t; q and r are each independently from 0 to 4 for each s, provided that the sum of q and r is at least 1 for each s; and E1 and E2 can each independently be hydrogen or hydrocarbyl.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: January 7, 2014
    Assignee: Transitions Optical, Inc.
    Inventors: Ruisong Xu, Xiao-Man Dai, Anil Kumar, Meng He, Chenguang Li, Rachael L. Yoest
  • Publication number: 20140004328
    Abstract: A thermoplastic composition that comprises a thermotropic, liquid crystalline polymer and a combination of certain types of flow modifiers is provided. More particularly, one type of flow modifier that is employed in the composition is a functional compound (e.g., hydroxy-functional, carboxy-functional, etc.) that can react with the backbone of the polymer. In certain cases, for instance, the functional compound can initiate chain scission of the polymer, which reduces the molecular weight, and in turn, the melt viscosity of the polymer under shear. An additional non-functional compound is also employed to help reduce the melt viscosity to the desired “ultralow” levels without having a significant impact on the mechanical properties. The non-functional compound is, more specifically, an aromatic amide oligomer that can alter intermolecular polymer chain interactions without inducing chain scission to any appreciable extent, thereby further lowering the overall viscosity of the polymer matrix under shear.
    Type: Application
    Filed: November 13, 2012
    Publication date: January 2, 2014
    Applicant: TICONA LLC
    Inventors: Young Shin Kim, Kamlesh P. Nair
  • Patent number: 8617420
    Abstract: The invention provides an optically isotropic liquid crystal composition having: a liquid crystal component comprising a liquid crystal component A consisting of one or more compounds selected from the group consisting of compounds having difluoroalkenyl and compounds having alkenyl; and chiral dopants, wherein in the liquid crystal component, the content of compounds having 3 or more ring structures is approximately 15 wt % or more.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: December 31, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Shin-ichi Yamamoto, Yasuhiro Haseba
  • Patent number: 8613985
    Abstract: According to one embodiment, a liquid crystal/polymer complex includes a liquid crystal material, a polymer, and a chiral agent. The liquid crystal material exhibits blue phase and contains liquid crystal molecules that are spirally arranged to form liquid crystal molecular cylinders having a spiral arrangement. The polymer maintains the arrangement and has a dendrimer-type structure including a dendrimer unit and a polymerizable unit bonded to an end of the dendrimer unit. The dendrimer unit contains a central atom and at least two branched structures bonded to the central atom and has a generation of two or more. The polymerizable unit contains a polymerizable group which can bond to a polymerizable group.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: December 24, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukio Kizaki, Hajime Yamaguchi, Yuko Kizu, Masao Tanaka, Akiko Hirao
  • Publication number: 20130337197
    Abstract: Methods of forming a liquid crystal blue phase from composite materials having a chiral nematic liquid crystal host and a bent-shape molecule are described. The stable temperature range of the liquid crystal blue phase may be improved by controlling the thickness of the composite materials. For example, a given composition may have a maximum stable temperature range for the liquid crystal blue phase at about 1 ?m.
    Type: Application
    Filed: March 22, 2012
    Publication date: December 19, 2013
    Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventor: Zhigang Zheng
  • Publication number: 20130334461
    Abstract: Provided are a polymerizable liquid crystal composition, a coating material, a medium, and a polarizing device each produced using a polymerizable liquid crystal compound and a colorant and each capable of producing polarized light suitable for polarizing devices, and also a novel naphtholactam derivative, a novel coumarin derivative, a novel Nile Red derivative, and a novel anthracene derivative each suitable for use as the colorant. Specifically provided are a polymerizable liquid crystal composition containing (A) at least one liquid crystal compound having a polymerizable functional group, (B) at least one colorant, and (C) a polymerization initiator, and a novel naphtholactam derivative of formula (IV?), a novel coumarin derivative of formula (VI?), a novel Nile Red derivative of formula (VII?), and a novel anthracene derivative of formula (VIII?) each suitable for use as the colorant (B).
    Type: Application
    Filed: March 15, 2012
    Publication date: December 19, 2013
    Applicant: ADEKA CORPORATION
    Inventors: Yusuke Kubota, Masatomi Irisawa, Toru Yano, Ken Matsumoto
  • Patent number: 8609208
    Abstract: A liquid crystal medium having an optically isotropic liquid crystal phase is described, which has stability to heat, light and so on, a broad temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy. A liquid crystal composition is described, which includes an achiral component T and a chiral dopant and exhibits an optically isotropic liquid crystal phase. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1), wherein R1 is C1-10 alkyl, the rings A1 to A6 are 1,4-phenylene, Z1 to Z7 are single bonds, Y1 and Y2 are fluorine; X1 is halogen, and i, j, k, m, n, p and q are independently 0 or 1.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: December 17, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Shin-Ichi Yamamoto, Koki Sago, Takafumi Kuninobu, Yasuhiro Haseba
  • Patent number: 8609207
    Abstract: The invention provides 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 large optical anisotropy, a large 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. The liquid crystal composition has a nematic phase, and includes a specific optically active compound as a first component and may optionally include a specific compound having a high maximum temperature or a small viscosity as a second component, and a specific compound having a large positive dielectric anisotropy as a third component, and the liquid crystal display device contains this composition.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: December 17, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takashi Hiraoka, Masayuki Saito, Kouki Sago
  • Patent number: 8603356
    Abstract: Provided are a wholly aromatic liquid crystalline polyester resin compound and a method of preparing the same. The wholly aromatic liquid crystalline polyester resin compound comprises a first wholly aromatic liquid crystalline polyester resin with a low melting point, a second wholly aromatic liquid crystalline polyester resin with a high melting point, and an additive, wherein the amount of the first wholly aromatic liquid crystalline polyester resin is 5 to 10 parts by weight with respect to 100 parts by weight of the second wholly aromatic liquid crystalline polyester resin.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Sang Hyuk Suh, Youn Eung Lee, Young Hak Shin, Jin Kyu Lee, Mahn Jong Kim
  • Patent number: 8603595
    Abstract: A novel liquid crystalline compound and/or a liquid crystal composition including the novel liquid crystalline compound that can be used for a variety of liquid crystal devices capable of exhibiting a blue phase with a wide temperature range are/is provided. A liquid crystalline compound represented by the general formula (G1) is provided.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: December 10, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Yuko Kawata, Momoko Kato, Tetsuji Ishitani, Tomohiro Tamura
  • Patent number: 8592006
    Abstract: A polymerizable monomer adopted to a display panel is represented as following chemical formula: wherein, m?0; “Z” is selected from oxygen, sulfur, carbonyl, caroboxyl, methyoxy, methylthio, thio, ethenylcarbonyl, carbonylethenyl, difluoromethoxy, difluoro methylthio, ethyl, difluoroethane, 1,2 difluoroethane, vinylene, difluoroethenylene, ethynyl, or single bond. “X1” and “X2” are independently selected from oxygen, sulfur, methyoxy, carbonyl, caroboxyl, -carbamoyl, methylthio, ethenylcarbonyl, carbonylethenyl, or single bond. “Sp1” and “Sp2” are independently a spacer or single bond. “P1” and “P2” are independently a polymerizable group.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 26, 2013
    Assignee: AU Optronics Corp.
    Inventors: Chung-Ching Hsieh, Yang-Chu Lin, Hsi-Chien Lin, Te-Sheng Chen
  • Publication number: 20130306907
    Abstract: Aliphatic dicarboxylate Gemini surfactants and lyotropic liquid crystal compositions formed thereby are disclosed. The Gemini surfactants are capable of robustly forming Q phase morphologies over broad ranges of temperature and concentration.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 21, 2013
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION (WARF)
    Inventors: Mahesh Kalyana Mahanthappa, Gregory Paul Sorenson, Keiva LaNee Coppage
  • Patent number: 8586152
    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 large optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, a high stability to heat and a short helical pitch is provided, wherein the liquid crystal composition has a negative dielectric anisotropy and contains a specific optically active compound as a first compound, a specific compound having a large negative dielectric anisotropy as a second component, and may contain a specific compound having a high maximum temperature or a small viscosity as a third component, a specific compound having a large negative dielectric anisotropy as a fourth component and a specific optically active compound as a fifth component, and a liquid crystal display device that contains the composition.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: November 19, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Takashi Hiraoka, Masayuki Saito
  • Publication number: 20130299741
    Abstract: A liquid crystal medium composition includes negative type liquid crystal material, stabilizer, and reactive monomer capable of reacting when being irradiated by ultraviolet light; the amount of the reactive monomer is 5% to 85% by weight based on the total amount of the liquid crystal medium composition. The reactive monomer at least includes a single-polymerisable-group monomer having structure shown in the following Formula (1) and double-polymerisable-group monomer having structure shown in the following Formula (2), and the amount of the single-polymerisable-group monomer is 5% to 85% by mole based on the total amount of the reactive monomer. The single-polymerisable-group monomer or the multiple-polymerisable-group monomer is capable of being irradiated by ultraviolet light to allow for the polymerization reaction to form the polymer. Additionally, the reaction speed is moderate to prevent the polymer from being oversized and loosely piled up for high reaction speed.
    Type: Application
    Filed: May 21, 2012
    Publication date: November 14, 2013
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventor: Xinhui Zhong
  • Patent number: 8580144
    Abstract: A composition including nanocomposites formed from blue phase liquid crystals that are stabilized with dopants and nanorods such as metallic nanorods and/or carbon nanotubes. Devices including the compositions are disclosed that provide increases temperature ranges as well as reduction in threshold voltage and turn on voltage, in addition to the inherent blue phase liquid crystal properties of sub-millisecond response time in the field induced Kerr effect.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: November 12, 2013
    Assignee: Kent State University
    Inventors: Liang-Chy Chien, Jeoung Yeon Hwang, Jenny-Marie Wong
  • Patent number: 8580143
    Abstract: The present invention relates to a lyotropic chromonic liquid crystal composition, a method for manufacturing a lyotropic chromonic liquid crystal coating film and a lyotropic chromonic liquid crystal coating film manufactured thereby. The lyotropic chromonic liquid crystal composition of the present invention includes chromonic liquid crystal compounds and monomers each having opposing acid-base properties. Use of the lyotropic chromonic liquid crystal composition in the formation of optical films leads to improvements in electrical and optical properties such as mechanical strength, an insulating characteristic and a refractive index.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: November 12, 2013
    Assignees: Korea Institute of Industrial Technology, Industrial Cooperation Foundation Chonbuk National University
    Inventors: Seung Han Shin, Eu Gene Chang, Myong Hoon Lee, Kwang Un Jeong, Yun Ju Bae