Containing Nonchiral Additive Having No Specified Mesophase Patents (Class 252/299.5)
  • Patent number: 10423023
    Abstract: A method of preparing a liquid crystal capsule and the use of the liquid crystal capsule. The liquid crystal capsule has advantages in that transmittance and stability are improved and the degree of scattering is uniform.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 24, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Dong Hyun Oh, Sung Joon Min, Jung Sun You, Kyung Jun Kim
  • Patent number: 10316251
    Abstract: A liquid crystal composition having negative dielectric anisotropy, large refractive index anisotropy, and low viscosity and containing as a first component, one or two or more compounds represented by general formula (I) and, as a second component, one or two or more compounds represented by general formula (II), wherein dielectric anisotropy (??) at 25° C. is ?2.0 or less. Also, a liquid crystal display device having high contrast, fast response, and excellent display quality without causing image sticking and display defects.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: June 11, 2019
    Assignee: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Joji Kawamura
  • Patent number: 10301544
    Abstract: A liquid-crystalline medium, in particular based on a mixture of polar compounds, having compounds of formulae Y, CY, PY and/or LY, and compounds of formula S1 and/or S2:
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 28, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Gavin Hung, Lawrence Huang, Max Nien
  • Patent number: 10303001
    Abstract: Disclosed are a thermal crosslink material, a manufacture method of a liquid crystal display panel and a liquid crystal display panel. A structural formula of the thermal crosslink material is wherein A is B is and R is a linear or chain branched alkyl having 5-20 C atoms, wherein one or more CH2 in the alkyl is substituted with phenyl cycloalkyl, —O—, —CONH—, —COO—, —O—CO—, —CO— or —CH?CH— group, or one or more H atoms in the first group are substituted with F atom or Cl atom; a specific crosslink material may be one of Molecules of the thermal crosslink material crosslink together to forma polymer having a crosslinked network, and groups A and B can be anchored on a substrate surface The branch R provides an effect of vertical alignment and can form alignment films.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: May 28, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Song Lan, Yungjui Lee
  • Patent number: 10294426
    Abstract: The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy, comprising a low-molecular-weight component and a polymerizable component. The polymerizable component comprises self-aligning, polymerizable mesogens (polymerizable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the LC medium without alignment layers. The invention discloses novel structures for polymerizable self-alignment additives which have a certain position of the functional groups.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: May 21, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Oliver Heppert, Andreas Taugerbeck, Elena Neumann
  • Patent number: 10280368
    Abstract: A liquid crystal composition satisfying at least one characteristic such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to UV light or to heat, or having a suitable balance regarding at least two of the characteristics, and an AM device having characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life are shown. The liquid crystal composition contains a specific compound having at least three polymerizable groups, and the liquid crystal display device includes the composition. The composition may contain a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having a high maximum temperature or small viscosity as a second component.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 7, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masayuki Saito, Yoshimasa Furusato
  • Patent number: 10203536
    Abstract: A photo-tunable liquid crystal composition may include a polymer matrix and a liquid crystal mixture dispersed within the polymer matrix. The liquid crystal mixture may include at least one achiral nematic liquid crystal material, at least sine photo-active chiral dopant, at least one photo-inactive chiral dopant, and at least one emissive dye. The composition may be fabricated in the form of an emulsion, a wet film, or a dry film. The dry film may be used in a photo-tunable liquid crystal film laser. The output wavelength of the photo-tunable liquid crystal film laser may be tuned by exposing the dry film to illumination having at least one wavelength at one or more transition wavelengths.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: February 12, 2019
    Assignee: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventor: Zhigang Zheng
  • Patent number: 10194691
    Abstract: A smoking article is disclosed herein. The smoking article includes a shell defining an interior space, a consumable substance within the interior space, a heat source effective to increase the temperature of at least a portion of the shell, and a label attached to at least a portion of the shell. The label includes a base film, a cover film, and a temperature dependent material disposed between the base film and the cover film. The temperature dependent material is configured to transition between a first appearance and a second appearance responsive to the increase of the temperature of at least a portion of the shell.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: February 5, 2019
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Andries Don Sebastian, Craig T. Demarest, Jarkko Tuominen, Annukka Kokkonen, Antti Sunnari, Sanna Uusitalo, Olli-Heikki Huttunen
  • Patent number: 10138420
    Abstract: The present invention relates to liquid crystal media comprising polymerizable mesogenic compounds with a bent shape, and to electro-optical displays comprising these media as light modulation media. In particular the electro-optical displays according to the present invention are displays, which are operated at a temperature, at which the liquid crystal modulation media are in an optically isotropic phase, preferably in a blue phase.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: November 27, 2018
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Norihiko Tanaka, Kevin Adlem, Matthias Bremer, David Wilkes, Ming-Chou Wu
  • Patent number: 10077401
    Abstract: A polymerizable compound having high polymerization reactivity, a high conversion ratio and high solubility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared from the composition and a liquid crystal display device having the composite are shown. The polymerizable compound has three or four rings in a serial arrangement and not being mutually condensed, and has three or more polymerizable groups among which at least one is bonded with a ring which is not an either terminal of the three or four rings. The polymerizable composition contains the above polymerizable compound and a liquid crystal composition. The liquid crystal composite is prepared from the above polymerizable composition, and the liquid crystal display device has the liquid crystal composite.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 18, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masahide Kobayashi, Yasuyuki Gotoh, Takahiro Kobayashi
  • Patent number: 10059878
    Abstract: Provided is a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, large optical anisotropy and large dielectric anisotropy, or has a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition may contain a specific compound having large negative dielectric anisotropy as a first component, a specific compound having a high maximum temperature or small viscosity as a second component, a specific compound having negative dielectric anisotropy as a third component, or a specific compound having a polymerizable group as an additive component.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: August 28, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10053625
    Abstract: A display device includes a first substrate, a second substrate, and a liquid crystal layer. The second substrate faces the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having negative dielectric constant anisotropy and an additive. The additive may be 2,6-di-tert-butyl phenol in which at least one position of a 3-position, 4-position and 5-position is substituted with a substituent.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyelim Jang
  • Patent number: 10017694
    Abstract: Disclosed is a liquid crystal medium containing a 2,4-diflurophenyl compound and the use thereof. The liquid crystal composition comprises the compounds as represented by formula I and formula II. The liquid crystal composition has a low rotary viscosity, good chemical and thermal stability and a fast response speed, it is suitable for a liquid crystal display device and particularly suitable for the use in an active matrix display of a TN, IPS or FFS mode.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: July 10, 2018
    Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
    Inventors: Hongru Gao, Yuqing Fu, Xuejiao Chen, Junhong Su, Renjie Liu
  • Patent number: 10012868
    Abstract: The present invention provides a polymerizable compound denoted by Formula (I): in the formula, Z1 and Z2 represent an arylene group, and the like, m represents 1 or 2, n represents an integer of 0 or 1, and when m is 2, n is 0, L1, L2, L3, and L4 each independently represent a linking group such as —C(?O)O— and —OC(?O)—, T3 represents -Sp4-R4, X represents —O—, and the like, r represents 1 to 4, Sp1, Sp2, Sp3, Sp4, and Sp5 each independently represent a single bond or a linking group, R1 and R2 each independently represent a polymerizable group, and R3, R4, and R5 each independently represent a hydrogen atom, a polymerizable group, or the like; a polymerizable composition containing the polymerizable compound described above; a film formed of the polymerizable composition described above; and a half mirror for displaying a projection image including the film described above.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: July 3, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Yuki Nakazawa, Shunya Katoh, Hiroshi Matsuyama, Daisuke Hayashi, Masaru Yoshikawa
  • Patent number: 9856172
    Abstract: Compositions including cement and an additive and methods for making compositions and/or concrete mixtures including a cement and an additive are provided.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: January 2, 2018
    Assignee: LIGHT POLYMERS HOLDING
    Inventors: Valeriy Kuzmin, Easton Groves, Gagandeep Sidhu, Michael Joseph Katila
  • Patent number: 9688915
    Abstract: A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to UV light and heat or a large elastic constant, or having a suitable balance regarding at least two of the characteristics, and an AM device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life, etc. are described. The composition has a nematic phase and contains an additive that can suppress formation of an impurity, and a specific compound having large dielectric anisotropy as a first component, and may contain a specific compound having a high maximum temperature or small viscosity as a second component. The AM device is an LCD device including the composition.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: June 27, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshimasa Furusato, Masayuki Saito
  • Patent number: 9684205
    Abstract: A display panel including a first substrate, a pixel array disposed on the first substrate, a first alignment layer covering the pixel array, a second substrate disposed opposite the first substrate, a second alignment layer disposed on the second substrate and a display medium disposed between the first alignment layer and the second alignment layer is provided. The first alignment layer has first alignment particles. A number of the first alignment particles each having an area ranged from 250 nm2 to 1000 nm2 occupies 40% or less of a total number of the first alignment particles in a unit area. The second alignment layer has second alignment particles. A number of the second alignment particles each having the area ranged from 250 nm2 to 1000 nm2 occupies 40% or less of a total number of the second particles in the unit area.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 20, 2017
    Assignee: Au Optronics Corporation
    Inventors: Chen-Chun Lin, Tien-Lun Ting, Wen-Hao Hsu
  • Patent number: 9644145
    Abstract: The invention relates to a birefringent RM lens obtainable from a polymerizable liquid crystalline medium consisting of a polymerizable liquid crystalline component A, consisting of one or more polymerizable mesogenic compounds, and a non-polymerizable component B, consisting of one or more non-polymerizable compounds and to the use of such birefringent RM lenses in electro optical devices, such as liquid crystal displays (LCDs) or other optical or electrooptical devices, for decorative or security applications.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: May 9, 2017
    Assignee: MERCK PATENT GMBH
    Inventor: Joseph Sargent
  • Patent number: 9637578
    Abstract: A polymerizable compound is provided having suitable polymerization reactivity, high conversion and high compatibility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared using the composition, and a liquid crystal display device having the composite. The polymerizable compound has at least one monovalent group (A). The polymerizable composition contains the compound. The liquid crystal composition and the liquid crystal composite is prepared using the polymerizable composition. The liquid crystal display device has the liquid crystal composite. In the monovalent group (A), R1 and R2 are independently alkyl having 1 to 3 carbons, and in the alkyl, at least one of hydrogen may be replaced by fluorine, and R3 is hydrogen or methyl.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 2, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yasuyuki Gotoh, Kenji Hirata
  • Patent number: 9598639
    Abstract: Liquid-crystal compounds, liquid-crystal compositions, and liquid-crystal devices employing the same are provided. The liquid-crystal compound has a structure of Formula (I): wherein R1 is hydrogen, C1-10 alkyl, or C2-10 alkenyl; R2 is, C2-10 alkenyl, or C2-10 fluoroalkenyl, in which one or two nonadjacent —CH2— is replaced by —O—, or C2-10 ether; A1, A2, A3, and A4 are independently R3 is independently hydrogen, or halogen; Z1, Z2, and Z3 are independently single bond, —CH2—, —(CH2)2—, —(CH2)4—, —CH2O—, —OCH2—, —CF?CF—, —(CH2)2CF2O—, —(CH2)2OCF2—, —OCF2(CH2)2—, —CF2O(CH2)2—, —COO—, —OCO—, —CF2O—, —OCF2—, —C?C—, —CH?CH—, —CH?CH—(CH2)2—, or —(CH2)2—CH?CH—; and n and m are independently 1 or 0.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: March 21, 2017
    Assignee: DAXIN MATERIALS CORPORATION
    Inventors: Ching-Tien Lee, Hsin-Cheng Liu, Chun-Chih Wang, Wan-Yu Huang, Tian-Meng Jiang, Hui-Qiang Tian, Li-Long Gao
  • Patent number: 9588427
    Abstract: A light exposure system executing a light exposure process to a plurality of assembly cells, each of which includes a first substrate, a second substrate and a liquid crystal layer disposed between the first and second substrates, comprises: a transmission device; two moving stages disposed on the transmission device and carrying the assembly cells; and a light source module including at least a light emitting element, wherein the transmission device moves at least one of the moving stages carrying the assembly cell or the light source module, and the light emitting element emits the light to the assembly cell, wherein the assembly cells include a first assembly cell and a second assembly cell, the moving stages carry the first assembly cell and the second assembly cell, respectively, wherein when the light exposure process is executed to the first assembly cell, the second assembly cell receives the work of cell replacement and alignment, electrode contact and application of electric field, wherein when the
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 7, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Ker-Yih Kao, Tsan-Jen Chen, Chen-Kuan Kao, Chien-Hsing Lee
  • Patent number: 9487699
    Abstract: A liquid crystal display panel includes a first substrate including a pixel electrode, a second substrate a second substrate including a common electrode and disposed opposite to the first substrate, and a liquid crystal layer between the first substrate and the second substrate, where the liquid crystal layer includes liquid crystal molecules having an elastic coefficient of bend phase (K33) and an elastic coefficient of splay phase (K11), and a ratio of the elastic coefficient of bend phase (K33) to the elastic coefficient of splay phase (K11) of the liquid crystal molecules in the liquid crystal layer is in a range of about 0.96 to about 1.25.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: November 8, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Joon Rho, Kyung-Min Kim, Jin-Lak Kim, Hye-Lim Jang, Keun-Chan Oh
  • Patent number: 9481829
    Abstract: A compound represented by the following formula (1) has sufficient solubility, a wide usable concentration range, and excellent haze-lowering performance. In the formula, L1 to L6 represent a single bond, —O—, —CO—, —COO—, etc; Sp1 to Sp4 represent a single bond or alkylene of 1 to 10 carbon atoms; A1 and A2 represent trivalent or tetravalent aromatic hydrocarbon or heterocyclic; T represents the following formulae, etc; Hb represent perfluoroalkyl of 2 to 30 carbon atoms; m and n are 2 or 3; and o and p are an integer of 0 or more.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: November 1, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Masatoshi Mizumura, Shunya Katoh, Minoru Uemura, Yasuhiro Ishiwata, Masaru Yoshikawa, Hiroshi Matsuyama
  • Patent number: 9397307
    Abstract: An organic electroluminescence device includes: a cathode; an anode; and an organic layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer, and the emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below. The second host material is a compound represented by a formula (4) below.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 19, 2016
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kazuki Nishimura, Sayaka Mizutani
  • Patent number: 9382480
    Abstract: A dichromatic dye composition which has the characteristics of higher order parameter and good miscibility can be applied in a guest-host liquid crystal composition. The absorbance curve of a guest-host liquid crystal composition with the dichromatic dye composition within the range of 420-680 nm has the following characteristics: a. 2?(T1+T2)/?T?10; b. |T1?T2|?0.5; c. 0<?T?0.2, where T1 is a difference between a transmittance to light at 420 nm and a minimum transmittance, T2 is a difference between the transmittance at a wavelength of 680 nm and a minimum transmittance, and ?T is a difference between the maximum and minimum transmittances on the transmittance curve within the wavelength range of 420-680 nm. A liquid crystal element with the guest-host liquid crystal composition provides a high-contrast display. A liquid crystal display device has the guest-host liquid crystal composition with the dichromatic dye composition.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: July 5, 2016
    Assignee: Jiangsu Hecheng Display Technology Co. Ltd.
    Inventors: Haibin Xu, Yudong Tan, Zhaoyuan Chen, Feng Wu, Xiaofei She, Da Huang, Xiangfei Kong, Xiaolong Song, Shizhi You
  • Patent number: 9371485
    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: April 8, 2015
    Date of Patent: June 21, 2016
    Assignee: Semiconductor Energy Laboraory Co., LTD.
    Inventors: Tomohiro Tamura, Yasuhiro Niikura, Tetsuji Ishitani, Sachiko Kawakami, Yuko Kawata
  • Patent number: 9206300
    Abstract: A wholly aromatic thermotropic liquid crystalline polymer and compositions including the liquid crystalline polymer are described. The polymer composition can include the liquid crystalline polymer and a fibrous filler, e.g., a chopped glass or milled glass fibrous filler. The compositions are capable of exhibiting excellent mechanical properties. The liquid crystalline polymer provides desirable characteristics with the incorporation of little or no naphthenic acids in the polymer backbone.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: December 8, 2015
    Assignee: Ticona LLC
    Inventors: Xinyu Zhao, Kamlesh Nair, Paul Yung, Grant Barber, Steven Gray, Young Shin Kim, Ardian Maliqi
  • Patent number: 9139776
    Abstract: The present invention relates to a composite comprising a polymer and a blue phase liquid crystal (BPLC). The polymer is a crosslinked and non-liquid crystalline polymer, the BPLC is dispersed in said polymer, and the ratio of the polymer to the BPLC by weight (Wp/Wl) satisfies the relationship: 12:88<Wp/Wl?30:70, wherein the Wp is the weight of the polymer, and Wl is the weight of the BPLC. The composite exhibits a very wide temperature range of blue phase of the BPLC, and can respond to an electric field at a millisecond level. The composite has an excellent stability, and a lower viscosity, while a wide viewing angle and a low driving voltage can be achieved. The invention also provides a method for preparing the composite, and a LCD device comprising the composite. The method of the present invention is simple and efficient.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: September 22, 2015
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Huai Yang, Ling Wang, Wanli He
  • Patent number: 9039929
    Abstract: A nematic liquid crystal composition of the present invention is used in liquid crystal display devices of the TN mode, OCB mode, ECB mode, IPS mode, or VA-IPS mode. The liquid crystal composition has positive dielectric anisotropy. Since the refractive index anisotropy and the nematic phase-isotropic liquid phase transition temperature are decreased and the increase in the lower limit temperature of the nematic phase is suppressed, the viscosity of the liquid crystal composition is sufficiently low without degrading the nematic phase temperature range. The liquid crystal composition also offers excellent features such as high-speed response, good display quality, and less display failures and is thus suitable as a practical liquid crystal composition.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 26, 2015
    Assignee: DIC CORPORATION
    Inventors: Masakazu Kaneoya, Kiyofumi Takeuchi, Masashi Osawa, Kenta Tojo, Tetsuo Kusumoto
  • Patent number: 9039931
    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: January 7, 2014
    Date of Patent: May 26, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomohiro Tamura, Yasuhiro Niikura, Tetsuji Ishitani, Sachiko Kawakami, Yuko Kawata
  • Patent number: 9039930
    Abstract: A blue phase liquid crystal display panel and a fabricating method thereof are provided. A first substrate and a second substrate are provided, and then a blue phase liquid crystal composition is filled between the first substrate and the second substrate, wherein the blue phase liquid crystal composition includes a blue phase liquid crystal and a reactive monomer. Next, an irradiation process is performed to induce a polymerization reaction in the reactive monomer of the blue phase liquid crystal composition, wherein a light utilized in the irradiation process has a wavelength ranged from 200 nm to 350 nm.
    Type: Grant
    Filed: March 31, 2013
    Date of Patent: May 26, 2015
    Assignee: Au Optronics Corporation
    Inventors: Yi-Fen Lan, Ling-Yung Wang, Pu-Jung Huang, Cheng-Yeh Tsai
  • Patent number: 9036114
    Abstract: The occurrence of a defective orientation of a polymer/liquid crystal composite is suppressed. In addition, the occurrence of defective display of a liquid crystal display device including the polymer/liquid crystal composite is suppressed. In the polymer/liquid crystal composite exhibiting a blue phase, a plurality of domains are included and defective orientations easily occur at boundaries between the domains. Thus, by lowering orientation periodicities at boundaries between the domains, a defect-free orientation to high orientation periodicities at the boundary between adjacent domains can be obtained. Specifically, the polymer/liquid crystal composite exhibiting the blue phase includes the plurality of domains each of which has a size of 3 ?m or less.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 19, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Daisuke Kubota
  • Patent number: 9036119
    Abstract: Several aspects of the present invention provide a liquid crystal composition capable of shortening the takt time and achieving excellent display qualities, and a liquid crystal display device and a method for producing a liquid crystal display device which use the liquid crystal composition. The liquid crystal composition of several aspects of the present invention includes a liquid crystal material and one or more kinds of radical polymerizable monomers, at least one kind of the radical polymerizable monomers being a compound generating radicals through a self-cleavage reaction by exposure to light and having at least two radical polymerizable groups.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: May 19, 2015
    Assignees: SHARP KABUSHIKI KAISHA, TOYO GOSEI CO., LTD.
    Inventors: Masanobu Mizusaki, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
  • Publication number: 20150129800
    Abstract: The instant invention relates to mesogenic media comprising one or more compounds of formula D wherein the parameters are as specified in the text, preferably to mesogenic media showing a blue phase, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices.
    Type: Application
    Filed: April 3, 2013
    Publication date: May 14, 2015
    Inventors: Michael Wittek, Malgorzata Rillich
  • Patent number: 9028713
    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: May 12, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xing Feng, Xinhui Zhong
  • Patent number: 9023439
    Abstract: A nematic liquid crystal composition according to the invention is used for a liquid crystal display element for an active matrix drive for TV applications or the like for which a quick switching and a wide viewing angle are required. The liquid crystal composition has a negative dielectric anisotropy having a large absolute value and also has a sufficiently low viscosity. Therefore, the liquid crystal composition has excellent characteristic properties, that is, a quick switching, good display quality and a suppressed display defect, and is therefore suitable as a practical liquid crystal composition. Further, a liquid crystal display element produced using the liquid crystal composition can be used favorably as a liquid crystal display element of a VA type or the like.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: May 5, 2015
    Assignee: DIC Corporation
    Inventors: Gou Sudou, Shotaro Kawakami
  • Patent number: 9011989
    Abstract: Defective display by a liquid crystal display device is reduced. In a liquid crystal composition which contains a liquid crystal material exhibiting a blue phase and has a transmission spectrum with a single peak in a temperature range where the liquid crystal material exhibits a blue phase, it is found that the blue phase of the liquid crystal material can be stabilized in a wide temperature range by polymer stabilization treatment. Thus, the liquid crystal composition allows the polymer stabilization treatment to be achieved in a wider temperature range. This makes it possible to reduce defective orientation in a composite of polymer and liquid crystal formed by subjecting the liquid crystal composition to the treatment. As a result, it is possible to reduce defective display by a liquid crystal display device which includes the composite of polymer and liquid crystal.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: April 21, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Takahiro Yamamoto, Makoto Ikenaga
  • Patent number: 9011714
    Abstract: An object is to provide a novel liquid crystal composition that can be used for a variety of liquid crystal devices. Particularly, a novel liquid crystal composition is used to achieve a reduction in driving voltage of a liquid crystal element and a reduction in power consumption of a liquid crystal display device. The liquid crystal composition includes a polymerizable monomer represented by the general formula (G1), a nematic liquid crystal, and a chiral agent. In the general formula (G1), n and m are individually an integer from 1 to 20, and R1 and R2 individually represent hydrogen or a methyl group.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 21, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Makoto Ikenaga, Daisuke Kubota, Takahiro Yamamoto, Sachiko Kawakami
  • Patent number: 9011990
    Abstract: The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The liquid crystal display includes a monofunctional monomer having a structure expressed by X-R (where X represents an acrylate group or a methacrylate group, and R represents an organic group having a steroid skeleton). A liquid crystal material is sandwiched between substrates which is then irradiated with ultraviolet rays to cure the monofunctional monomer, thereby forming a polymer film at an interface of a substrate. The monofunctional monomer has a hydrophobic skeleton such as an alkyl chain and a photoreactive group on one side of the skeleton.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 21, 2015
    Assignee: Unified Innovative Technology, LLC
    Inventors: Shingo Kataoka, Hideaki Tsuda, Katsufumi Ohmuro, Jin Hirosawa, Seiji Tanuma, Yoshio Koike
  • Patent number: 9005476
    Abstract: Polyarylene sulfide/liquid crystal polymer alloys are described as are methods of forming the polyarylene sulfide/liquid crystal polymer alloys. The polyarylene sulfide/liquid crystal polymer alloys are formed according to a melt processing method that includes melt processing a polyarylene sulfide with a reactively functionalized disulfide compound and a liquid crystal polymer in a one or two step process. The reactively functionalized disulfide compound is added in a stoichiometric amount to react with a portion of the polyarylene sulfide. The melt processing forms a polyarylene sulfide/liquid crystal polymer copolymer that is a compatibilizer in the alloy. The polyarylene sulfide/liquid crystal polymer alloys may provide low chlorine content products having excellent strength characteristics.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: April 14, 2015
    Assignee: Ticona LLC
    Inventors: Rong Luo, Xinyu Zhao, Paul C. Yung
  • Patent number: 9005721
    Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: April 14, 2015
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • Patent number: 8999195
    Abstract: A liquid crystal smectic A composition that can be switched by the application of different electric fields across it between a first stable state (left hand block in FIG. 4) and at least one second stable state (right hand block in FIG. 4) in which the composition is less ordered than in the first state. The radiation transmission properties of the first and second states are different.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: April 7, 2015
    Assignee: Cambridge Enterprise Limited
    Inventors: Daping Chu, Huan Xu, William Alden Crossland, Anthony Bernard Davey
  • Patent number: 8999465
    Abstract: The present invention provides a liquid crystal display device in which display defects are not easily generated even when an alignment film is not formed. The liquid crystal display device of the present invention includes a pair of substrates; and a liquid crystal layer that is held between the pair of substrates, wherein both substrates of the pair of substrates do not substantially include an alignment film, at least one substrate of the pair of substrates includes a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto, the polymer layer is formed by polymerization of monomers of at least one kind included in a liquid crystal layer composition, and the monomers of at least one kind contain a compound represented by the following formula (1): (wherein A represents an acrylate group, a methacrylate group, an ethacrylate group, a vinyl group, or an allyl group; a represents 0 or 1; and m represents a natural number of 4 to 12).
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 7, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Youhei Nakanishi, Takeshi Noma
  • Patent number: 8999460
    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 one or more compounds of formula I, defined herein, for use in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALO, FFS or IPS effect, 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 and one or more compounds of the formulae III-1 to III-4, defined herein.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: April 7, 2015
    Assignee: MERCK PATENT GmbH
    Inventors: Mark Goebel, Rocco Fortte, Detlef Pauluth
  • Publication number: 20150092147
    Abstract: A liquid crystal composition is described, including a liquid crystalline compound (A), and at least one nitrogen-containing compound (B) selected from compounds represented by formula (1) and compounds represented by formula (2), wherein R? is a hydrogen atom or a monovalent organic group that is bonded to the nitrogen atom via a chain-shaped hydrocarbon group or an alicyclic hydrocarbon group, R2 and R3 are independently a divalent organic group that is bonded to the nitrogen atom via a chain-shaped hydrocarbon group, an alicyclic hydrocarbon group or *—CO—R4—, A1 is a nitrogen-containing heteroaromatic ring, X1 is a cyclic ether group or a polymerizable unsaturated group, and R10 is a divalent organic group that is bonded to the primary amino group via a chain-shaped hydrocarbon group or an alicyclic hydrocarbon group.
    Type: Application
    Filed: August 7, 2014
    Publication date: April 2, 2015
    Inventors: HIROAKI TOKUHISA, YUUSUKE UESAKA
  • Patent number: 8993076
    Abstract: The present invention provides a liquid crystal additive, a liquid crystal composition and a liquid crystal panel thereof. The liquid crystal additive of the present invention has a higher clear point, so that adding the liquid crystal additive into a liquid crystal composition of a liquid crystal panel can omit the process of forming alignment films to reduce manufacturing costs and time of liquid crystal panels; meanwhile, the MURA phenomenon due to the different effects of liquid crystal molecules and liquid crystal reactive monomers on alignment films is avoided, so as to improve the uniformity of liquid crystal panel.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: March 31, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Houng-Chieh Lu
  • Patent number: 8994900
    Abstract: According to embodiments of the invention, there are provided a display module, a display device and a method of manufacturing the display module. The display module comprises an array structural layer and a color filter layer provided on a surface of the array structural layer. The color filter layer comprises black matrixes and color pixel layers, and the color pixel layers are formed between adjacent black matrixes, respectively.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: March 31, 2015
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Mingchao Li, Jaegeon You
  • Patent number: 8992796
    Abstract: The present invention provides a polymerizable liquid crystal composition containing polymerizable liquid crystal compounds and a photoinitiator, wherein the photoinitiator has a light absorption band in a wavelength range of 280 to 400 nm; and at least one of the polymerizable liquid crystal compounds has a light absorption band in a wavelength range of 320 to 400 nm or a light-absorbing agent having a light absorption band in a wavelength range of 280 to 400 nm is contained. Thus, there is provided a material that can be cured in the air without replacing the atmosphere with an inert gas during irradiation with ultraviolet rays and that can achieve the characteristics required for a biaxial film, such as a sufficiently large front phase difference.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: March 31, 2015
    Assignee: DIC Corporation
    Inventors: Hiroshi Hasebe, Yasuhiro Kuwana, Isa Nishiyama
  • Patent number: 8980383
    Abstract: A method of making a wide temperature-range smectic liquid crystal material comprises taking a wide temperature-range nematic mixture and doping this with a mesogenic silicon-containing material. Aspects of the invention provide wide temperature-range smectic materials and devices using the smectic materials.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 17, 2015
    Assignee: Cambridge Enterprise Limited
    Inventors: Harry J. Coles, Damian J. Gardiner
  • Patent number: 8962103
    Abstract: A liquid crystal film (LCF), a method of manufacturing the same, an optical device, or an LCD is provided. The exemplified LCF can be used as a reflective polarization plate, which can improve luminance and light utilization efficiency of a display device, such as an LCD, and the like.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: February 24, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dae Hee Lee, Jun Won Chang, Moon Soo Park