Liquid Crystal Process, Composition, Or Product Patents (Class 430/20)
  • Patent number: 9690010
    Abstract: For providing a resin composition for an optical material which exhibits less change in birefringence due to external force and which is suitable for use in the production of an optical member; an optical film obtained by using the resin composition; and a liquid crystal display device using the same, provided is a resin composition containing a polycarbonate resin (X); and a polyester resin (Y) whose number average molecular weight is 200 to 2,000 and which is represented by General Formula (1): B-(G-A)n-G-B (wherein B represents an aryl monocarboxylic acid residue having 6 to 12 carbon atoms or an aliphatic monocarboxylic acid residue having 1 to 8 carbon atoms.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: June 27, 2017
    Assignee: DIC CORPORATION
    Inventors: Teppei Ujihara, Yusuke Tajiri, Masato Ishiyama
  • Patent number: 9690013
    Abstract: An object of the present invention is to provide a resin composition that exhibits only a small change in birefringence due to external force and can be suitably used for production of optical members and to provide an optical film obtained by using the resin composition and a liquid crystal display device using the optical film. The provided resin composition for an optical material contains: a polymer (A) obtained by using (meth)acrylic acid or an alkyl(meth)acrylate; and a polyester resin (B). The polyester resin (B) is a polyester resin (B1) that has, in a main chain thereof, an aromatic ring-containing structural unit and has a number average molecular weight of 300 to 5,000, and each end of the main chain is capped with a monocarboxylic acid residue or a monoalcohol residue.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: June 27, 2017
    Assignee: DIC CORPORATION
    Inventors: Yusuke Tajiri, Takanori Ootsubo
  • Patent number: 9627619
    Abstract: A thin film forming apparatus includes: a thin film source including a thin film on one surface of the thin film source to be transferred to a substrate; and a light emitter configured to apply light energy to the thin film source to transfer the thin film to the substrate.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: April 18, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Duckjung Lee, Jiyoung Choung, Kyuhwan Hwang
  • Patent number: 9507215
    Abstract: A liquid crystal polymer composition comprising a liquid crystal, acrylic monomers including an acrylic monomer group (A) including a cyclic ring and an acrylic monomer group (B) including a chain structure or a cyclohexanol, and a photo initiator.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: November 29, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Wonjin Choi, Geesung Chae, Dongcheon Shin, Jinki Kim, Hyesun Son, Sejin Jang
  • Patent number: 9491275
    Abstract: A service provider for a communications system may detect new contact information for a contact in the contact database of a first one of the subscribers. The service provider obtains a confirmation of the new contact information by a party other than the first subscriber to confirm accuracy of the new contact information. Responsive to detection of the confirmation event, the service provider stores the confirmed contact information in an aggregate contact database including contact data from multiple ones of the plurality of subscribers. The new contact information may include a communications identifier, such as a telephone number, physical address or network address. The new contact information may further include personal information for the contact, such as a photograph, a profile, a weblog, a buddy list, a bookmark and/or a tag, or commercial information associated with the contact, such as a user rating, an advertisement and/or a coupon.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: November 8, 2016
    Assignees: AT&T Intellectual Property I, L.P., by transfer of ownership from AT&T, Delaware Intellectual Property, Inc.
    Inventor: John Ruckart
  • Patent number: 9309274
    Abstract: A device is presented having reversibly changeable and optically readable optical properties. The device comprises a substrate having an electrically conductive surface and carrying a redox-active layer structure. The redox-active layer structure may be a monolayer or a multi-layer structure and is configured to have at least one predetermined electronic property including at least one of electrodensity and oxidation state. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. This at least one electronic property is changeable by subjecting the redox-active layer structure to an electric field or to a redox-active material. The device thus enables effecting a change in said electronic property that results in a detectable change in the optical response of the layer structure.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 12, 2016
    Assignee: YEDA RESEARCH AND DEVELOPMENT CO. LTD.
    Inventors: Milko E. Van Der Boom, Atindra D. Shukla, David Rosenblatt, Tarkeshwar Gupta
  • Patent number: 9304322
    Abstract: A phase difference element capable of decreasing deterioration of 3D characteristics and a display unit including the phase difference element are provided. The phase difference element includes a phase difference film, and an anti-glare film. The phase difference film has a phase difference layer composed of two or more phase difference regions each having different direction of a slow axis that are regularly arranged in a plane. Retardation of the anti-glare film is 20 nm or less and total haze of the anti-glare film is 30% or less.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: April 5, 2016
    Assignee: Sony Corporation
    Inventors: Junichi Inoue, Mitsunari Hoshi
  • Patent number: 9201258
    Abstract: A display device includes a substrate and pixels arranged on the substrate in a matrix form. The substrate includes a display area in which the pixels are arranged and a non-display area disposed adjacent to a side of the display area. Each pixel includes a cover layer that extends in a row direction that includes a sidewall portion connected to the substrate and a cover portion spaced apart from the substrate and connected to the sidewall portion to define a tunnel-shaped cavity on the substrate. A width of the sidewall portion between adjacent pixels is less than a width of the sidewall portion disposed at an outermost position, and the cover layer seals one side of the tunnel-shaped cavity in the pixels arranged in a first row and a last row.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yeun Tae Kim, Hee-Keun Lee, Jaekeun Lim
  • Patent number: 9122946
    Abstract: In some embodiments, systems for capturing scene images and depth geometry are provided, comprising a projector, an optical sensor, and a digital processing device. The projector is capable of being defocused with respect to a scene and projects light having a shifting periodic illumination pattern on the scene. The optical sensor has a plurality of pixels and detects a portion of the radiance of at least one image of the scene at each of the pixels. The digital processing device is capable of being coupled to the optical sensor and obtains a temporal radiance profile from the radiance over a time period for each of the pixels, determines an amount of projection defocus at each of the of pixels using the temporal radiance profile, and, at each of the pixels, computes a depth to the scene at the pixel using the amount of projection defocus at the pixel.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: September 1, 2015
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Li Zhang, Shree K. Nayar
  • Patent number: 9049345
    Abstract: A method and system for monitoring a display venue are disclosed. One method involves receiving information generated by an audience in response to a request associated with content provided to the audience at a display venue, and determining at least one condition at the display venue based on the information.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: June 2, 2015
    Assignee: Thomson Licensing
    Inventors: William Gibbens Redmann, Mark J. Huber
  • Publication number: 20150030973
    Abstract: The present invention provides a birefringent lens material for a stereoscopic image display, the birefringent lens material containing two or more liquid crystal compounds each having at least one polymerizable functional group, a birefringent lens for a stereoscopic image display, the birefringent lens being formed by using the lens material, and a method for producing a birefringent lens for a stereoscopic image display using the lens material. The birefringent lens material for a stereoscopic image display and the birefringent lens for a stereoscopic image display of the present invention are good in terms of optical characteristics, durability, and productivity, in particular, productivity. The method for producing a birefringent lens for a stereoscopic image display of the present invention has good productivity.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Applicant: DIC CORPORATION
    Inventors: Yasuhiro Kuwana, Hiroshi Hasebe
  • Patent number: 8871315
    Abstract: Optical films are described having a polymerized microstructured surface that comprises the reaction product of a polymerizable resin composition comprising at least one polymerizable ethylenically unsaturated triphenyl monomer. Also described are certain triphenyl(meth)acrylate monomers and polymerizable resin compositions.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: October 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Bryan V. Hunt, Kyle J. Lindstrom, Judith M. Invie, David B. Olson, Anthony M. Renstrom
  • Patent number: 8865890
    Abstract: A device is presented having reversibly changeable and optically readable optical properties. The device comprises a substrate having an electrically conductive surface and carrying a redox-active layer structure. The redox-active layer structure may be a monolayer or a multi-layer structure and is configured to have at least one predetermined electronic property including at least one of electrodensity and oxidation state. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. This at least one electronic property is changeable by subjecting the redox-active layer structure to an electric field or to a redox-active material. The device thus enables effecting a change in said electronic property that results in a detectable change in the optical response of the layer structure.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: October 21, 2014
    Assignee: Yeda Research and Development Co., Ltd.
    Inventors: Milko E. Van Der Boom, Atindra D. Shukla, David Rosenblatt, Tarkeshwar Guptar
  • Patent number: 8852853
    Abstract: A photo-mask is capable of preventing stain defects and a method for fabricating a liquid crystal display device using the photo-mask which achieves the same capability. The photo-mask includes a transparent substrate configured to transmit ultraviolet light and a light shielding layer configured to block ultraviolet light on a surface of the transparent substrate. The light shielding layer includes an absorption layer configured to absorb ultraviolet light.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Hoon Kim, Ji-Yong Park, Jin-Suk Park, Sunghyuk Kim, Min-Chang Kim, Kyung Hyun Choi
  • Patent number: 8822127
    Abstract: A photosensitive resin composition for a black matrix and a black matrix formed with the same are provided. The photosensitive resin composition for a black matrix includes a solvent consisting of 5-30 weight % of a first solvent having a boiling point of 110-159° C., 55-90 weight % of a second solvent having a boiling point of 160-200° C., and 3-15 weight % of a third solvent having a boiling point of 201-280° C., and the first solvent, the second solvent, and the third solvent are an aliphatic compound and use at least one solvent composition selected from a group consisting of alkyl ester, alkyl ketone, alkyl ether, and alkyl alcohol, and thus a uniform thin film having no surface defect can be obtained, and the photosensitive resin composition has an excellent process property while securing a high light shielding property and thus a black matrix pattern having a few defect can be obtained, and is thus useful for a liquid crystal display.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: September 2, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Geun Young Cha, Sung-Hyun Kim
  • Publication number: 20140212798
    Abstract: A method of tilting liquid crystal molecules is presented. The method entails providing a substrate including a photoalignment layer on top of a layer of liquid crystal molecules. The photoalignment layer is exposed to patterned light that is incident on the substrate at a substantially normal angle. The patterned light is polarized in a polarization direction that is non-parallel to an incident surface of the substrate.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 31, 2014
    Applicant: KENT STATE UNIVERSITY
    Inventor: Hiroshi YOKOYAMA
  • Patent number: 8758976
    Abstract: The present invention relates to a positive photosensitive polyimide composition that includes polyimide, a polyamic acid, and a photoactive compound. An organic insulating layer for organic light-emitting devices (OLED), which includes the positive photosensitive polyimide composition, may control a taper angle and outgassing, and has excellent adhesion in respects to a substrate, water repellent control ability, and storage stability and the like.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: June 24, 2014
    Assignee: LG Chem Ltd.
    Inventors: Hye-Ran Seong, Chan-Hyo Park, Dong-Hyun Oh, Hye-In Shin, Kyung-Jun Kim, Se-Jin Shin
  • Patent number: 8748068
    Abstract: A method of producing a patterned birefringent product, comprising at least steps [1] to [3] in this order: [1] producing a birefringent pattern building material comprising at least one optically anisotropic layer, which is formed by a process including: coating and drying a composition containing at least one rod-like liquid crystalline compound having at least two reactive groups and at least one chiral agent to form a cholesteric liquid crystal phase; and then subjecting the cholesteric liquid crystal phase to heating or exposure to radiation to form the optically anisotropic layer containing a polymer fixed by polymerization and fixing; [2] subjecting the birefringent pattern building material to a patterned exposure to light; and, [3] baking a laminate obtained after the step [2] at 50° C. or higher and 400° C. or lower.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: June 10, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Hideki Kaneiwa, Ichiro Amimori
  • Patent number: 8722879
    Abstract: A device is presented having reversibly changeable and optically readable optical properties. The device comprises a substrate having an electrically conductive surface and carrying a redox-active layer structure. The redox-active layer structure may be a monolayer or a multi-layer structure and is configured to have at least one predetermined electronic property including at least one of electrodensity and oxidation state. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. This at least one electronic property is changeable by subjecting the redox-active layer structure to an electric field or to a redox-active material. The device thus enables effecting a change in said electronic property that results in a detectable change in the optical response of the layer structure.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: May 13, 2014
    Assignee: Yeda Research & Development Company Ltd. at the Weizmann Institute of Science
    Inventors: Milko E. Van Der Boom, Atindra D. Shukla, David Rosenblatt, Tarkeshwar Gupta
  • Patent number: 8703253
    Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: April 22, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
  • Patent number: 8704977
    Abstract: The invention provides a liquid crystal cell and method thereof. The cell comprises two opposed substrates and a surfactant-free lyotropic chromonic liquid crystals (LCLC) material disposed therebetween. By using an ammonium compound with LCLC or surface treatment on the substrates, the alignment of the LCLC material can be manipulated as a homeotropic bulk alignment; or a hybrid bulk alignment in which the LCLC alignment is changed from homeotropic bulk alignment in the vicinity of one substrate to planar alignment in the vicinity of another substrate. The cell can be used in biosensing, detection and amplification of ligands, optical devices, and photovoltaics etc.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: April 22, 2014
    Assignee: Kent State University
    Inventors: Oleg D. Lavrentovich, Yuriy A. Nastyshyn, Vassili G. Nazarenko, Roman M. Vasyuta, Oleksandr P. Boiko, Ye Yin, Sergij V. Shiyanovskii
  • Publication number: 20140106267
    Abstract: A method of forming an image having multiple phases is disclosed herein. The method includes forming exposed and unexposed areas, the exposed areas comprising a first polymer network exhibiting first and second phases that are chemically connected and have different refractive indices, the first phase being continuous, and the second phase comprising a plurality of structures dispersed within the first phase, and the unexposed areas comprising a second polymer network comprising third and fourth phases that are chemically connected and have different refractive indices, the third phase being continuous, and the fourth phase comprising a plurality of structures dispersed within the third phase. The first and second polymer networks are chemically connected, and morphology formed by the first and second phases is different than that formed by the third and fourth phases.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mieczyslaw H. Mazurek, Raymond P. Johnston, John E. Potts, Marc D. Radcliffe, Kevin R. Schaffer, Audrey A. Sherman, Wendi J. Winkler
  • Patent number: 8691349
    Abstract: A liquid crystal display panel including a first substrate, a second substrate, a liquid crystal layer, and a polymer stabilized alignment layer is provided. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The polymer stabilized alignment layer is disposed between the first substrate and the liquid crystal layer, and an average surface roughness of the polymer stabilized alignment layer is greater than or equal to 10 nm.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 8, 2014
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Jung Chiang, Chih-Ho Chiu, Chung-Ching Hsieh, Chia-Hsuan Pai, Bo-Hsin Huang, Te-Sheng Chen
  • Publication number: 20140057200
    Abstract: Embodiments of the present invention disclose a method for producing a masterboard alignment film, and a transfer printing plate and an alignment solution. The method comprises coating the alignment solution on a masterboard having two or more substrates using the transfer printing plate which has a transfer region simultaneously covering the two or more substrates, so that the alignment solution forms an alignment film on the masterboard; and removing the alignment film on the masterboard which is located in regions that are out of the display regions of the substrates and where there is no need to retain the alignment film. This method can solve the existing display defect issues that are caused by too thick peripheral regions of the alignment film, and the overlapping of the too thick peripheral regions of the alignment film with the sealant region.
    Type: Application
    Filed: September 28, 2012
    Publication date: February 27, 2014
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haiyun Lin, Chengtan Zhao, Hui Li, Jingpeng Li
  • Patent number: 8647529
    Abstract: A liquid crystal drop apparatus for dropping liquid crystal on a substrate includes a liquid crystal container filled with liquid crystal, a nozzle formed at an lower end of the liquid crystal container for dropping the liquid crystal of the liquid crystal container, and a control unit for controlling the nozzle when the nozzle drops the liquid crystal.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: February 11, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Young Suk Kim
  • Patent number: 8637226
    Abstract: A method of forming an image having multiple phases is disclosed herein. The method includes forming exposed and unexposed areas, the exposed areas comprising a first polymer network exhibiting first and second phases that are chemically connected and have different refractive indices, the first phase being continuous, and the second phase comprising a plurality of structures dispersed within the first phase, and the unexposed areas comprising a second polymer network comprising third and fourth phases that are chemically connected and have different refractive indices, the third phase being continuous, and the fourth phase comprising a plurality of structures dispersed within the third phase. The first and second polymer networks are chemically connected, and morphology formed by the first and second phases is different than that formed by the third and fourth phases.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: January 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Mieczyslaw H. Mazurek, Raymond P. Johnston, John E. Potts, Marc D. Radcliffe, Kevin R. Schaffer, Audrey A. Sherman, Wendi J. Winkler
  • Patent number: 8603723
    Abstract: The present invention relates to an image transfer process. The process includes the steps of: a) providing an image carrying device including at least one photoluminescent surface; b) displaying a luminous image on a display surface of a light-emitting medium; and c) positioning the display surface of the light-emitting medium that is displaying the luminous image at a distance from the at least one photoluminescent surface of the image carrying device shorter than a predetermined effective distance, for a predetermined period of time.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: December 10, 2013
    Assignees: Taiwan Textile Research Institute, Gixia Innovation Co., Ltd.
    Inventors: Hsi-Wen Chang, Wei-Jen Lai, Pi-Ju Chiang, Chun-Hung Lin, Jung Ya Hsieh
  • Publication number: 20130316274
    Abstract: A phase difference layer laminated body used in a three-dimensional liquid crystal display device, wherein unit cells are divided into groups for left and right eyes, which are given different degrees of polarization, thereby creating a three-dimensional image, further wherein the phase difference layer laminated body has a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern with two different portions, and the liquid crystal material in each of two different portions is oriented to have different refractive index anisotropy each other that conforms to the two different degrees of polarization and fixed as it is.
    Type: Application
    Filed: July 30, 2013
    Publication date: November 28, 2013
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventor: Keiji KASHIMA
  • Publication number: 20130308085
    Abstract: According to the present invention, provided is a birefringent transfer foil, comprising a temporary support, an orientation layer, a birefringent layer (preferably a patterned optically anisotropic layer) formed from a composition comprising a liquid-crystal compound having at least one reactive group, said orientation layer being in contact with the temporary support or a releasing layer, wherein the releasing layer being in contact with the temporary support, and said orientation layer being a layer comprising a cellulose alkyl ether or a hydroxyalkyl derivative of cellulose alkyl ether. In the birefringent transfer foil of the present invention, the above orientation layer also functions as a protective layer and a detachment layer, enabling to reduce the manufacturing cost.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 21, 2013
    Applicant: FUJIFILM Corporation
    Inventors: Reona IKEDA, Yuuya YAMAMOTO, Hideaki ITOU
  • Patent number: 8541150
    Abstract: A manufacturing method of a polymer film with the photonic crystal structure includes a mixing step for at least mixing an achiral liquid crystal (LC), a chiral dopant, a monomer and a photo initiator together to form an LC-monomer mixture, at least one exposure step for exposing the LC-monomer mixture through a mask, at least one diffusion step for diffusing the monomer from the area around one of the exposure areas to the exposure area, and a LC removing step for removing the achiral LC to form the polymer film. By implementing the diffusion step after the exposure step, the polymerization rate of the monomers is enhanced so as to increase the proportion of the polymer in the polymer film and raise the imprint rate of chirality. Therefore, the polymer film can reveal stronger photonic crystal structure and property of Bragg reflection when it is not filled with any fluid.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: September 24, 2013
    Assignee: National Cheng Kung University
    Inventor: Jui-Hsiang Liu
  • Publication number: 20130164661
    Abstract: A method for making a retardation film includes: (a) forming a photo-alignment layer on a substrate; (b) exposing the photo-alignment layer such that first and second regions of the alignment surface are oriented in a first alignment direction; (c) disposing a patterned mask over the photo-alignment layer such that the first regions of the alignment surface are shielded; (d) exposing the second regions such that the second regions are oriented in a second alignment direction, and the first regions remain oriented in the first alignment direction; (e) coating liquid crystal molecules over the alignment surface; and (f) curing the liquid crystal molecules.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 27, 2013
    Applicant: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Chien-Cheng Chang, Chiu-Fang Chen, Da-Ren Chiou, Wei-Che Hung
  • Patent number: 8431682
    Abstract: The invention relates to regioregular polyselenophenes, to their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices, and to optical, electro-optical or electronic devices comprising them.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: April 30, 2013
    Assignee: Merck Patent GmbH
    Inventors: Martin Heeney, Warren Duffy, Iain McCulloch, Simon Higgins, David Crouch, Peter Skabara
  • Patent number: 8394487
    Abstract: A birefringent pattern builder, having an optically anisotropic layer containing a polymer having unreacted reactive groups, wherein the optically anisotropic layer is produced by a method containing the steps [1] and [2] in this order: [1] coating and drying a solution containing a liquid crystalline compound having at least two kinds of reactive groups; and [2] reacting one kind of the at least two kinds of reactive groups by applying heat or irradiating ionizing radiation.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: March 12, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Hideki Kaneiwa, Ichiro Amimori
  • Patent number: 8337965
    Abstract: A sealant for a one drop fill process of the invention contains the following components (1), (2), (3), and (4): (1) a curing agent composed of a reaction product produced by reacting an acid compound and a polyamine containing, within its molecule, at least one active hydrogen and at least two nitrogen atoms; (2) a heat-curable resin; (3) an acylphosphine-based photoinitiator; and (4) a photo-curable resin. A heat-curable resin containing a bisphenol A propylene oxide-modified epoxy resin is preferably used as the heat-curable resin (2), and a photo-curable resin containing a bisphenol A acrylate-modified resin is preferably used as the photo-curable resin (4).
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: December 25, 2012
    Assignee: Adeka Corporation
    Inventors: Kazuyuki Itano, Hiroya Fukunga, Hirokatsu Shinano, Rieko Hamada, Takahiro Otsuka
  • Patent number: 8325319
    Abstract: A method for manufacturing a liquid crystal display panel includes applying a first frame-like sealing material, and a second sealing material adjacent to the first sealing material along at least one side of the first sealing material, on a first mother substrate; forming a spacer on a second mother substrate made of glass so as to extend between the first and second sealing materials; bonding the first mother substrate on which the first and second sealing materials are applied, and the second mother substrate on which the spacer is formed, to each other such that the first and second sealing materials are in contact with each other without gaps with the spacer being interposed therebetween, and that a liquid crystal layer is sealed within the frame defined by the first sealing material; and cutting the bonded mother substrates at an intermediate position in the width direction of the spacer.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: December 4, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tazo Ikeguchi
  • Patent number: 8269358
    Abstract: A bis(aminophenol) derivative having substituents at positions adjacent to two amino groups is provided. The bis(aminophenol) derivative is used as a raw material of a polyamide resin for a positive-tone photosensitive resin composition. A polyamide resin comprising bis(aminophenol) and a structure derived from a carboxylic acid is also provided, the bis(aminophenol) having substituents at positions adjacent to the two amino groups. A positive-tone photosensitive resin composition comprising a polybenzooxazole precursor resin, exhibiting high sensitivity and a high cyclization rate even when cured at a low temperature is provided. Also provided is a positive-tone photosensitive resin composition comprising a polyamide resin having an imide structure, an imide precursor structure, or an amide acid ester structure. The composition exhibits high sensitivity and produces a cured product having low water absorption even when cured at a low temperature.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: September 18, 2012
    Assignee: Sumitomo Bakelite Company Limited
    Inventor: Koji Terakawa
  • Patent number: 8263188
    Abstract: Provided is a composition for a photo-alignment film includes a compound expressed by the following general formula (I) and a compound expressed by the following general formula (II):
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: September 11, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Michitaka Matsuumi
  • Patent number: 8253898
    Abstract: A novel transfer material is disclosed. The transfer material comprises, at least, a support, and, thereon, an optically uniaxial or biaxial anisotropic layer and a photosensitive polymer layer. A novel process for producing a liquid crystal cell substrate is also disclosed. The process comprises, at least, [1] laminating a transfer material as set forth in any one of claims 1 to 11 on a substrate; [2] removing the support from the transfer material laminated on the substrate; and [3] exposing the photosensitive polymer layer disposed on the substrate to light.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: August 28, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Ichiro Amimori, Wakahiko Kaneko, Satomi Suzuki, Hideki Kaneiwa
  • Patent number: 8231946
    Abstract: The present invention relates to a photoreactive norbornene polymer comprising a photoreactive norbornene monomer, a process for preparing the same, and an alignment layer using the same. The photoreactive norbornene polymer includes a photoreactive functional group having a halogen, in particular, a fluorine substituent group so that it gives a compositional gradient in the alignment layer to improve an orientation rate, an orientation, and an adhesion property.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: July 31, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai-Seung Choi, Young-Chul Won
  • Patent number: 8231806
    Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising in each case one or more compounds of the formula I in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: July 31, 2012
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Markus Czanta, Michael Wittek, Lars Lietzau, Marcus Reuter, Brigitte Schuler
  • Patent number: 8226851
    Abstract: The present invention comprises a liquid-crystalline polymer composition comprising a nanostructured hollow-carbon material and a liquid-crystalline polymer. The nanostructured hollow-carbon material may comprises particles, each particle of which is selected from the group consisting of a particle which is composed of a carbon part and a hollow part and has a structure that the hollow part is entirely enclosed by the carbon part; and a particle which is composed of a carbon part and a hollow part and has a structure that the hollow part is partly enclosed by the carbon part.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: July 24, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroshi Harada, Hirokazu Matsui
  • Patent number: 8216649
    Abstract: The present invention relates to a liquid crystal aligning agent which contains a reaction product of at least one selected from the group consisting of a polysiloxane having a structure represented by the following formula (S-1), a hydrolysate thereof and a condensate of the hydrolysate and a compound represented by the following formula (1): (YI in the formula (S-1) is a hydroxyl group, an alkoxyl group having 1 to 10 carbon atoms, an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, R in the formula (1) is a group having an alkyl group with 4 to 20 carbon atoms, a fluoroalkyl group with 1 to 20 carbon atoms or a cyclohexyl group, or a group having 17 to 51 carbon atoms and a steroid skeleton, and XI in the formula (S-1) and Z in the formula (1) are reacted with each other to form a bond group for bonding the silicon atom in the formula (S-1) to R in the formula (1)).
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: July 10, 2012
    Assignee: JSR Corporation
    Inventors: Toshiyuki Akiike, Tsutomu Kumagai, Shoichi Nakata, Kenichi Sumiya, Eiji Hayashi
  • Patent number: 8216489
    Abstract: The invention provides a liquid crystal compound represented by the following formula having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a large optical anisotropy and a suitable elastic constant K33 (K33: bend elastic constant), and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and provides a liquid crystal composition including the compound, wherein R1 and R2 are hydrogen, alkyl or the like, ring A1 is trans-1,4-cyclohexylene, 1,4-phenylene or the like, L1 to L4 are hydrogen or fluorine, and at least three of them are fluorine; when the ring A1 is trans-1,4-cyclohexylene or the like, Z1 is a single bond, —(CH2)2— or the like, when ring A1 is 1,4-phenylene, Z1 is —(CH2)2— or the like.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 10, 2012
    Assignees: JNC Corporation, Chisso Petrochemical Corporation
    Inventor: Masahide Kobayashi
  • Patent number: 8211332
    Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a low viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two or more characteristics. The subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high contrast ratio, a long service life and so forth.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: July 3, 2012
    Assignees: JNC Corporation, Chisso Petrochemical Corporation
    Inventors: Norikatsu Hattori, Subaru Kawasaki
  • Patent number: 8206610
    Abstract: A liquid crystal composition is provided 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 negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics. The crystal liquid display device using the composition is suitable for an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, and can be used for a liquid crystal projector, a liquid crystal television and so forth.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: June 26, 2012
    Assignees: JNC Corporation, Chisso Petrochemical Corporation
    Inventors: Norikatsu Hattori, Masayuki Saito
  • Patent number: 8202447
    Abstract: The present invention provides a method for producing a liquid crystal composition which mixes two or more liquid crystal compounds, namely, a method for producing a liquid crystal composition, including conducting agitation or ultrasonic irradiation of two or more liquid crystal compounds without applying external heat, wherein at least one of the liquid crystal compounds has a melting point higher than 40° C., and a temperature at a start of the agitation or ultrasonic irradiation is not more than 40° C. The production method of the present invention enables a highly reliable, high-quality liquid crystal composition to be produced without the necessity for large-scale equipment such as a pressure reduction apparatus or heating apparatus. Accordingly, this method is extremely practical for the production of liquid crystal compositions that require a high level of reliability.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: June 19, 2012
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Kunihiko Kotani
  • Patent number: 8202728
    Abstract: Described herein are substrates coated with crystals having uniform crystalline morphology on the surface of the substrate. The coated substrates are useful in culturing and performing functional assays on cells such as, for example, resorption studies on bone cells. New methods for producing such coated substrates are also disclosed.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: June 19, 2012
    Assignee: Corning Incorporated
    Inventors: Calvin T. Coffey, Charlotte D. Milia, Hongwei H. Rao, Yichun C. Wang, Christine C. Wolcott
  • Patent number: 8197995
    Abstract: A method of manufacturing an array substrate of a transreflective LCD is provided in the invention. In the method, a gate line, a common line and an embossing pattern are formed with a full tone mask, a data line, a source/drain electrode, a reflective plate and a TFT channel region are formed with a first dual tone mask, and a pixel electrode connected with the drain electrode is formed with a second dual tone mask, and thus a horizontal electric field type transreflective LCD can be obtained.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: June 12, 2012
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Young Suk Song, Seung Jin Choi, Seong Yeol Yoo
  • Patent number: 8199290
    Abstract: A display device includes a display panel, a backlight assembly providing a light to the display panel, a receiving container receiving the backlight assembly and a heat sink member disposed between the backlight assembly and the receiving container. The display panel includes a first substrate including a pixel electrode formed on a pixel region and electrically connected to a switching device, a first alignment layer formed on the pixel electrode, a second substrate including a common electrode layer facing the first substrate, a second alignment layer formed on the common electrode layer, and a liquid crystal layer including a liquid crystal composition having a nematic-to-isotropic transition temperature higher than about 80° C. Thus, black bruising of liquid crystal may be prevented and/or reduced, thereby enhancing a display quality.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soo-Jeong Huh, Nam-Seok Lee, Won-Gap Yoon, So-Youn Park, Si-Heun Kim
  • Patent number: 8197708
    Abstract: Disclosed are a new dichroic dye having liquid crystal properties and dichroic properties and capable of being used for forming a polarization film with excellent heat resistance, durability, and polarizing properties, a composition including the same for a polarization film, a method for forming a polarization plate with excellent durability using the composition, and a polarization plate prepared thereby. The new dichroic dye has a structure of R1-L1-(M,L,D) (where, D is a dichroic structure, M is a structure with liquid crystal properties, R1 is a reactive end functional group, and L and L1 are linking structures). The composition for a polarization film includes the dichroic dye. In the method for forming the polarization plate, the composition for a polarization film is applied to a substrate and cured to prepare the polarization plate. The polarization plate has excellent dichroic ratio, heat resistance, durability, and polarizing properties.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: June 12, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Yong-Il Cho, Jeong-Su Yu, Eun-Kyung Kim, Sin-Young Kim