Polarizer Or Dye Containing Viewing Layer Patents (Class 428/1.31)
  • Patent number: 8300395
    Abstract: A housing includes a screen guard defining a transparent section, and a main body molded to the screen guard. The screen guard and the main body cooperatively define a cavity for accommodating electronic components of the electronic device.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 30, 2012
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Po-Feng Ho, Guo-Yong Li, Tong-Ming Lan, Chang-Hai Gu, Qiu-Jiang Xu
  • Patent number: 8298631
    Abstract: A cholesteric liquid crystal composition homogenously having a desired pitch length and pitch gradient and capable of giving a layer having a broad selective reflection bandwidth; a circularly-polarized light separating sheet having the broad selective reflection bandwidth and capable of being produced simply and homogenously; and a method for producing such a sheet. A cholesteric liquid crystal composition which contains a nematic liquid crystal compound having a reactive group, contains a chiral agent, has a ?n value of 0.18 or more and has an absolute value of a temperature dependency parameter ?? represented by ??={(2(?b??a)/(?b+?a)}×{100/(b?a)} (“a” and “b” represent the temperature (° C.), ?a represents a selective reflection center wavelength at “a” ° C. and ?b represents the selective reflection center wavelength at “b” ° C.) of 0.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: October 30, 2012
    Assignee: Zeon Corporation
    Inventor: Kentaro Tamura
  • Patent number: 8273423
    Abstract: To provide: a color filter substrate with high display quality in which defective portions of a bank member (black matrix), such as a pin hole, a portion having an insufficient film thickness, a portion having an insufficient width, and a disconnection portion, or color mixing defects of a colored layer are corrected by the simple and inexpensive method; a liquid crystal display device including such a color filter; and production methods thereof. The color filter substrate of the present invention is a color filter substrate comprising a bank member and a colored layer on a substrate, wherein the color filter substrate has a structure in which a color mixing member formed of colored layer materials of two or more colors is formed in a defective portion of the bank member or along the bank member.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: September 25, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirokazu Yoshioka, Keiichi Tanaka, Atsuhito Murai, Yasutoshi Murakami, Yoshitaka Okumoto, Satoru Kishimoto
  • Patent number: 8263195
    Abstract: A cellulose ester film is provided and includes a polycondensate obtained from a diol and a dicarboxylic acid, and the polycondensate contains the following (1) and (2). (1) A dicarboxylic acid residue containing an aromatic dicarboxylic acid residue and an aliphatic dicarboxylic acid residue having an average carbon number of 4.0 to 5.0, in which a ratio of the aromatic dicarboxylic acid residue represented by the following equation is from 40% by mole to 95% by mole: The ratio of the aromatic dicarboxylic acid residue=[(the number of moles of the aromatic dicarboxylic acid residue)/((the number of moles of the aromatic dicarboxylic acid residue)+(the number of moles of the aliphatic dicarboxylic acid residues))]×100. (2) An aliphatic diol residue having an average carbon number of 2.0 to 3.0.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: September 11, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Hiromichi Furukawa, Mamoru Sakurazawa
  • Patent number: 8263194
    Abstract: A color filter having a bi-layer metal grating is formed by nanoimprint lithography. Nanoimprint lithography, a low cost technology, includes two alternatives, i.e., hot-embossing nanoimprint lithography and UV-curable nanoimprint lithography. Manufacture steps includes providing a substrate with a polymer material layer disposed thereon. A plurality of lands and grooves are formed in the polymer material layer, and a first metal layer and a second metal layer are disposed on the surfaces of the lands and grooves, respectively. Finally, a color filter having a bi-layer metal grating is obtained.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: September 11, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Pin-Chen Chen, Hui-Lung Kuo, Chih-Ho Chiu, Liang-Bin Yu
  • Patent number: 8257802
    Abstract: A coating liquid for forming a polarizing film comprising a lyotropic liquid crystal compound (A) exhibiting light absorption characteristics in a visible light region having a wavelength 400 nm or longer, a lyotropic liquid crystal compound (B) exhibiting no or low light absorption characteristics in the visible light region having a wavelength 400 nm or longer and a solvent dissolving the lyotropic liquid crystal compound (A) and the lyotropic liquid crystal compound (B).
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: September 4, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Tetsuo Inoue, Shoichi Matsuda, Yuki Fukudome
  • Patent number: 8257621
    Abstract: A transparent polymer film satisfying Rth/Re??0.39, Re>0 and Rth<0 and having a moisture permeability of 100-2000 g/(m2·day) at 40° C. and a relative humidity of 90%, and not containing an additive composition that raises Rth by at least 8 nm.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: September 4, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Yasuyuki Sasada
  • Patent number: 8227053
    Abstract: An optically-compensatory film comprising: a cyclic polyolefin film satisfying expression (I); and a cellulose acylate film satisfying expressions (II) and (III), or a liquid-crystal display device comprising at least one cyclic polyolefin film satisfying expression (I) and at least one cellulose acylate film satisfying expressions (II) and (III): 35?Re(630)?350 and 70?Rth(630)?400,??(I) 0?Re(630)?10 and |Rth(630)|?25, and??(II) |Re(400)?Re(700)|?10 and |Rth(400)?Rth(700)|?35,??(III) wherein Re(?) represents an in-plane retardation value (unit: nm) at a wavelength of ? nm; and Rth(?) represents a thickness-direction retardation value at a wavelength of ? nm.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: July 24, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Ikuko Ohgaru, Sumio Ohtani
  • Patent number: 8221855
    Abstract: A cellulose derivative film having high optical isotropy over the whole visible region and high durability against high temperature and humidity conditions is provided. The film contains a cellulose derivative having a substituent the polarizability anisotropy ?? (=?x?(?y+?z)/2) of which is 2.5×10?24 cm3 or more, and the film has an in-plane retardation Re and a thickness direction retardation Rth satisfying the respective inequalities: |Rth(589)|?25 nm and |Re(589)|?10 nm. Also provided are an optical compensation film, a polarizing plate, and a liquid crystal device that use the cellulose derivative film and exhibit excellent viewing angle characteristics and durability.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: July 17, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Tadashi Omatsu, Nobutaka Fukagawa, Hiromoto Haruta, Yutaka Nozoe, Tomohiro Ogawa, Hiroaki Sata
  • Publication number: 20120177848
    Abstract: A cellulose acylate film, having: a cellulose acylate mixture; and a plasticizer, wherein the cellulose acylate mixture contains: a cellulose acetate having a degree of substitution with acetyl group of 2.7 to 2.95; a cellulose acylate having a total degree of substitution with acyl group of 2.0 to 2.9 and a degree of substation with acyl group having 3 to 6 carbon atoms of 0.05 to 0.40, a mixing ratio of the cellulose acetate to the cellulose acylate is 90/10 to 40/60 by mass, the cellulose acylate mixture has a total degree of substitution with acyl group of 2.6 to 2.95, a degree of substitution with acetyl group of 2.2 to 2.9, and a degree of substitution with acyl group having 3 to 6 carbon atoms of 0.05 to 0.40, and an amount of the plasicizer is 30% to 60% by mass based on the cellulose acylate mixture.
    Type: Application
    Filed: January 10, 2012
    Publication date: July 12, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Kazuo KAMOHARA, Kengo ASAI
  • Publication number: 20120171392
    Abstract: Provided are an optical film for use in flat panel display (FPD) devices, and a method for manufacturing the same. Particularly, there is provided a method for imparting surface roughness to an optical film, which includes forming dented craters having a radius of curvature of 10 nm-100 ?m on the surface of an optical film obtained by a solution casting process and forming a plateau between one crater and another crater. There is also provided an optical film obtained by the same method.
    Type: Application
    Filed: September 2, 2010
    Publication date: July 5, 2012
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Yong Gyun Cho, Chol Ho Lee, Yoo Seock Hwang, Hyuk Jun Kim, Ki Yup Kim, Sung Ho Son, Ki-Beom Kim, Kwang Jin Chung, Jun Tae Choi
  • Patent number: 8197726
    Abstract: A cellulose acylate film in which the number of V-shaped thickness-uneven portions having a variation width in the thickness direction of 0.1 to 10% of a film thickness and a width in the in-plane direction of 1 to 20 mm is in the range of 0 to 10 per 100 m in the length direction of the film. A display unevenness is solved in a liquid crystal display device having the cellulose acylate film.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: June 12, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Kiyokazu Hashimoto, Zemin Shi
  • Patent number: 8188194
    Abstract: An adhesive composition for polarizing plates in which an acrylic polymer, a tin compound having a dialkyl group and serving as a cross-linking accelerator and an isocyanate cross-linker are dissolved in an organic solvent, the acrylic polymer being formed by copolymerization of monomers containing an alkyl (meth)acrylate, a hydroxyl group containing monomer and/or a carboxyl group containing monomer, wherein preferably, a solution containing 30% by weight of the acrylic polymer which constitutes the adhesive composition, dissolved in 70% by weight of ethyl acetate has a viscosity in the range of 0.5 to 10.0 Pa·s measured at 23° C., and the acrylic polymer has a weight-average molecular weight in the range of 300,000 to 700,000.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: May 29, 2012
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Tetsuya Yoshida, Satoshi Uehara
  • Patent number: 8187680
    Abstract: Disclosed are an anti-static adhesive composition, and a polarizing plate and/or a surface protective film fabricated using the same. More particularly, an anti-static adhesive composition for imparting enhanced anti-static properties, including a metal salt represented by Formula 1 as an anti-static agent so as to sufficiently inhibit generation of static electricity while not deteriorating inherent physical properties of an adhesive such as adhesiveness, durability and reliability, etc., is provided. In addition, a polarizing plate and and/or a surface protective film fabricated using the foregoing anti-static adhesive composition are provided. M+[(FSO2)2N]???(Formula 1) wherein M is an alkali metal.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: May 29, 2012
    Assignee: Dong-Woo Fine-Chem Co. Ltd.
    Inventors: Sung-min Kim, Han-young Choi, Young-sik Choi
  • Patent number: 8168271
    Abstract: Microstructured optical films, assemblies of films including at least one microstructured optical film, and (e.g. illuminated) display devices including a single microstructured optical film or assembly.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: May 1, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Clinton L. Jones, Brant U. Kolb, David B. Olson, Emily S. Goenner, Shandon D. Hart, John T. Cowher
  • Patent number: 8168734
    Abstract: The invention relates to compounds represented by Formula (1): wherein Ra is independently halogen, cyano, —CF3, —CF2H, —CFH2, —OCF3, —OCF2H, —N?C?O, —N?C?S or alkyl having a carbon number of approximately 1 to approximately 20; in the alkyl, optional —CH2— may be substituted with —O—, —S—, —SO2—, —CO—, —COO—, —OCO—, —CH?CH—, —CF?CF— or —C?C—, and optional hydrogen may be substituted with halogen; Rb is fluorine or —CF3; A is independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, fluorene-2,7-diyl or bicyclo[2.2.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 1, 2012
    Assignees: JNC Corporation, Chisso Petrochemical Corporation
    Inventor: Takashi Kato
  • Patent number: 8163359
    Abstract: Disclosed are a retardation film including a polymer resin; and an optically anisotropic compound having a silicon group, and a polarizing plate including the retardation film. Also, disclosed is a liquid crystal display including the retardation film and/or the polarizing plate.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: April 24, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Minjin Ko, Myungsun Moon, Kiyoul Lee, Kim YunBong, Jaeho Cheong, Bumgyu Choi, Daeho Kang
  • Patent number: 8158022
    Abstract: The present invention provides a polarizing film containing an azo compound represented by the following formula (1): in which X is a hydrogen atom, a halogen atom, a nitro group, a cyano group, an alkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and M is a counter ion.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: April 17, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Hisanari Onouchi, Sadahiro Nakanishi
  • Publication number: 20120021143
    Abstract: A display device capable of improving the contrast ratio and having a polarizing layer formed by applying shear stress to a material containing a dye having a lyotropic liquid crystallinity to align the molecule of the dye, wherein the display device has an underlayer film forming a base for the polarizing layer, the molecule of the dye has a sulfo group, and the underlayer film comprises a material having a basic surface functional group.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 26, 2012
    Inventors: Takato HIRATSUKA, Masaya Adachi, Osamu Itou
  • Patent number: 8092872
    Abstract: An optical film includes a transparent support; and a hardcoat layer that is a layer formed by curing a coating solution containing (A) an octa- to pentadeca-functional urethane (meth)acrylate-based compound having a molecular weight of 800 to 2,000 and having two or more urethane bonds in its molecule, and a photopolymerization initiator.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: January 10, 2012
    Assignee: Fujifilm Corporation
    Inventors: Shunichi Kondo, Osamu Sawanobori
  • Patent number: 8085365
    Abstract: A cellulose acylate film, which has a film thickness of from 20 to 70 ?m and an elastic modulus of from 3.5 to 10 GPa in at least one direction of a film casting direction and a width direction.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: December 27, 2011
    Assignee: FUJIFILM Corporation
    Inventor: Susumu Sugiyama
  • Patent number: 8083349
    Abstract: An edge coated glass polarized lens includes a lens body and an edge coating made from a UV curable material having a composition including: an aliphatic polyesterpolyol based urethane methacrylate formed by reaction of reactants including an aliphatic polyesterpolyol, a hydroxyalkyl methacrylate, and a diisocyanate, and having a number average molecular weight ranging from 800 to 4500; a reactive diluent including a methacrylate monomer; an adhesion enhancer including a silane material selected from methacrylate-functional silane, amino methacrylate-functional silane, vinyl-functional silane, and combinations thereof; and a photo initiator.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: December 27, 2011
    Assignee: Cornerstone Optical Co., Ltd.
    Inventors: Christopher Ho, Michael Chiou, Chun-Chieh Chen
  • Publication number: 20110311738
    Abstract: A process of producing a cellulose acylate film is disclosed. The process comprises a forming step of forming a web of a fluid, comprising a cellulose acylate, aromatic group-containing oligomer and solvent, by casting the fluid onto a support, a stretching step of stretching the web, thereby to align molecules of the aromatic group-containing oligomer along the stretching direction, and a heat-treatment step of subjecting the stretched web to a heat treatment, thereby to at least increase the alignment degree of molecules of the aromatic group-containing oligomer.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 22, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki Nimura, Ryo Nakamura, Hiroko Kamee, Kentaro Toyooka, Hiroshi Sato, Megumi Sekiguchi, Yukito Saitoh, Akira Yamamoto, Michio Nagai
  • Patent number: 8081270
    Abstract: The present invention relates generally to backlight modules for display devices and liquid crystal displays incorporating the same, and more particularly, to a backlight module for generating light with a single polarization state. The present invention provides a backlight module, comprising an optical cavity for reflecting and depolarizing light that is incident upon a front surface of said optical cavity and a multilayer polarizer comprising a plurality of layers. Said multilayer polarizer faces the front surface of the optical cavity and the layers are arranged in such a way that a light of polarization substantially parallel to the transmission axis of said multilayer polarizer is substantially transmitted and the light of substantially orthogonal polarization is substantially reflected by said multilayer polarizer in at least one predetermined wavelength subrange of the visible wavelength range.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: December 20, 2011
    Assignee: Crysoptix, KK
    Inventor: Pavel I. Lazarev
  • Patent number: 8053039
    Abstract: The present invention is directed towards polymerizable dichroic azo dyes comprising azo-chromophores having at least one standard mesogenic ring system attached to said chromophores and at least one polymerizable group leading to dyes having sufficient solubilty and a very high order parameter.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: November 8, 2011
    Assignee: Rolic AG
    Inventors: Thomas Peglow, Franco Moia, Zoubair Mohammed Cherkaoui, Mario Schwab
  • Publication number: 20110262661
    Abstract: An optical performance humidity dependency improving agent for cellulose acylate film, which contains a compound having a nucleic acid base skeleton, is capable of preventing the fluctuation of Re and Rth of the film against the humidity change in usage environments.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Masato Nagura, Aiko Yoshida, Naoyuki Nishikawa
  • Publication number: 20110262662
    Abstract: There is provided a method for producing a cellulose resin film, with which the deterioration of the entire film and the occurrence of die lines can be prevented. The method for producing a cellulose resin film, including the steps of: discharging two cellulose resins A and B molten in the respective extruders in the form of an A/B/A three-layer sheet from a die upon a support by co-extrusion; and cooling and solidifying the sheet-shaped molten resin into a film, wherein the resin A, which forms a pair of outer layers of the A/B/A three-layer sheet, has a number average molecular weight smaller than that of the resin B, which forms the inner layer of the A/B/A three-layer sheet, and the resin A has a number average molecular weight of 20,000 or more and 50,000 or less, and the resin B has a number average molecular weight of 30,000 or more and 100,000 or less.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Tadashi UEDA
  • Publication number: 20110236603
    Abstract: A cellulose acylate film comprising at least one cellulose acylate, at least one sterol derivative represented by formula (1), and at least one saccharide derivative and/or at least one oligomer plasticizer is disclosed. R1, R2 and R3 represents a hydrogen atom, a hydroxyl group or a substituent represented by -L-R*, provided that at least one of them represents the substituent represented by -L-R*; L represents a single bond or a divalent connecting group selected from the group consisting of —O—, —CO—, —CONR6—, —CH2— and a combination thereof, R* represents a substituted or unsubstituted aromatic ring group, heterocyclic group or alkyl group; R4 represents a carboxyl group or —CHR7—CH(CH3)2; R5 represents a hydrogen atom or a methyl group.
    Type: Application
    Filed: March 28, 2011
    Publication date: September 29, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Hiroyuki HAGIO, Aiko YOSHIDA, Nobutaka FUKAGAWA
  • Patent number: 8025933
    Abstract: A retardation plate comprising at least one optically anisotropic layer, wherein at least one of said optically anisotropic layers is formed from a composition containing a liquid crystalline compound represented by the following formula: wherein Y11, Y12 and Y13 are methine or N; L1, L2 and L3 are single bond or divalent group; H1, H2 and H3 are formula (DI-A) or (DI-B); YA1, YA2, YB1 and YB2 are methine or N; XA and XB are O, S, etc.; R1, R2 and R3 are -(-L21-Q2)n1-L22-L23-Q1; L21 is single bond or divalent group; Q2 is cyclic divalent group; n1 is 0-4; L22 is —O—, —O—CO—, etc; L23 is —O—, —S—, etc.; Q1 is polymerizable group or H.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 27, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Hideyuki Nishikawa, Satoshi Tanaka
  • Patent number: 8025936
    Abstract: The present invention aims to provide an optical compensation film that allows superior phase difference between a first optically anisotropic layer and a second optically anisotropic layer and excellent wavelength dispersibility in terms of front and inclined retardation of liquid crystal layers in liquid crystal cells, a polarizing plate containing the optical compensation film, and a liquid-crystal display device that can display superior images with less color change due to the polarizing plate. In order to attain the object, an optical compensation film etc. is provided that comprises at least a first optically anisotropic layer and a second optically anisotropic layer, wherein the first optically anisotropic layer satisfies at least one of the following Equations (i) to (iii): 1?Re1450)(0°)/Re1650)(0°)?1.25:??Equation (i) 1?Re1450)(40°)/Re1650)(40°)?1.25:??Equation (ii) 1?Re1450)(?40°)/Re1650)(?40°)?1.25:??Equation (iii).
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 27, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Ryota Matsubara, Yuta Takahashi, Akira Ikeda, Masaru Yoshikawa, Takafumi Hosokawa, Michio Nagai, Makoto Takahashi
  • Patent number: 7981488
    Abstract: A liquid crystal display device comprising a liquid crystal cell and two polarizing plates disposed on the both sides thereof, wherein a protective film satisfying the specific conditions of retardation is sandwitched each between the liquid crystal cell and the polarizing plates. The liquid crystal display device can be easily produced at low costs and has a low viewing angle dependency of color.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: July 19, 2011
    Assignee: Fujifilm Corporation
    Inventors: Nobutaka Fukagawa, Hiromoto Haruta, Yutaka Nozoe
  • Patent number: 7982953
    Abstract: An antireflection film comprising: a transparent plastic film substrate; a hard coat layer; and a low refractive layer, in this order, wherein the low refractive layer is formed by a curable composition comprising: (a) an inorganic fine particle; (b) at least one of a cationic polymerizable compound having a silyl group within the molecule; a hydrolysate of the compound; and a partial condensate of the compound; and (c) a photo-cationic polymerization initiator.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 19, 2011
    Assignee: Fujifilm Corporation
    Inventors: Kenichi Fukuda, Yasuhiro Okamoto
  • Patent number: 7976914
    Abstract: A resin film has a photoelastic coefficient of from 0 to 30×10?8 cm2/N; and Re satisfying the following formulae (1) to (4): 20 nm<Re(548)<300 nm??Formula (1): 0.5<Re(446)/Re(548)<1??Formula (2): 1.0<Re(629)/Re(548)<2.0??Formula (3): 0.1%?[{Re(548) at 25° C., 10% RH?Re(548) at 25° C., 80% RH}/Re(548) at 25° C., 60% RH]?20%,??Formula (4): wherein Re(?) represents an in-plane retardation at a wavelength of ?.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: July 12, 2011
    Assignee: Fujifilm Corporaton
    Inventors: Nobutaka Fukagawa, Mamoru Sakurazawa, Shigeki Uehira, Masaki Noro
  • Patent number: 7968157
    Abstract: A discotic nematic material comprising a compound of R1—H1—Ar—H2—R wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon ring; H1 and H2 represent an aromatic hetero ring; and R1 and R2 represent a substituent having from 1 to 30 carbon atoms. The discotic nematic material contains a discotic liquid-crystal compound having a smaller number of side branches and capable of expressing an ND phase.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: June 28, 2011
    Assignee: Fujifilm Corporation
    Inventor: Makoto Takahashi
  • Patent number: 7964251
    Abstract: A liquid crystal display device of an in-plane switching mode comprises a pair of polarizing plates which are constituted with a polarizing plate at the output side comprising a polarizer at the output side and a polarizing plate at the incident side comprising a polarizer at the incident side having a transmission axis approximately perpendicular to a transmission axis of the polarizer at the output side and two or more sheets of optically anisotropic members and liquid crystal cells disposed between the pair of polarizing plates. The device exhibits excellent scratch resistance and excellent quality of black depth and uniform and high contrast in viewing at any angles.
    Type: Grant
    Filed: December 26, 2005
    Date of Patent: June 21, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Takeyuki Yamaki, Hiroshi Yokogawa, Akira Tsujimoto, Ryozo Fukuzaki, Tetsuya Toyoshima, Masanori Yoshihara, Kohei Arakawa
  • Patent number: 7951431
    Abstract: A process for the producing a coating fluid of the present invention comprises a step of adjusting a pH of the coating fluid by mixing ammonium hydroxide into an acid solution containing a lyotropic liquid crystal compound and a solvent. Further, a process for the producing an optically anisotropic film of the present invention comprises a step of obtaining an optically anisotropic film by casting the coating fluid produced by the aforementioned process for production of the coating fluid in a thin film state, followed by drying.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: May 31, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Yasuko Iwakawa, Tetsuo Inoue, Tadayuki Kameyama, Shoichi Matsuda
  • Patent number: 7951434
    Abstract: A polarizing plate is provided and is excellent in characteristics of optical compensation, small in a change of polarization performance over time and excellent in moisture and heat resistance. The polarizing plate contains a polarizing film and two transparent protective films provided one on each side of the polarizing film, in which at least one of the two protective films is an optical compensatory sheet containing a cellulose acylate film. The polarizing plate has specified single-plate transmittance and polarization degree P and has specified ranges of variations of the transmittance and the polarization degree P after a passage of a specified period of time under a high-temperature high-humidity atmosphere and a high-temperature low-humidity atmosphere. The liquid crystal display device of VA mode using the polarizing plate is provided.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: May 31, 2011
    Assignee: Fujifilm Corporation
    Inventor: Keiichi Taguchi
  • Patent number: 7943208
    Abstract: The invention provides materials and methods for making anisotropic solids which may be in the form of films, layers, shaped elements, and other shaped articles. The methods provide anisotropic solids without the need for rolling, rubbing, or stretching to impart orientational alignment of the molecules of the solid. The methods employ organic or organometallic compounds which are soluble orienting molecules. The solvent or solvent system must be sufficiently volatile to be removed without disruption of the molecular orientation. The soluble orienting molecules include those containing one or more hydrophilic and/or ionic groups and the solvent or solvent system can be a polar organic solvent or solvent system or an aqueous solvent or solvent system. The invention also provides novel compounds having quaterrylene, perylene and naphthalene ring systems carrying one or more hydrophilic and/or ionic groups.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: May 17, 2011
    Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada, Reno
    Inventors: Travis D. Carson, Sean M. Casey, Isaac K. Iverson, Wonewoo Seo, Suk-Wah Tam-Chang
  • Patent number: 7936510
    Abstract: The present invention provides an optical film that includes i) a (meth)acrylic resin, and 5 to 45 parts by weight of ii) a graft copolymer, prepared by grafting a (meth)acrylic resin onto a copolymer of (meth)acrylic rubber and aromatic vinyl compound, based on 100 parts by weight of the i) (meth)acrylic resin, and an electronic device including the optical film.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: May 3, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Bin Ahn, Yong-Yeon Hwang, Min-Jung Kim, Jae-Hyun Jeong, Ki-Heon Song
  • Patent number: 7935396
    Abstract: An object of the present invention is to provide a liquid crystal display device that has an excellent mass-productivity and gives an image improved by the reduction of the chromaticity difference between white display and black display, the reduction of coloring and luminance in black display, and the improvement of the contrast ratio. In the present invention, of a pair of alignment films 131 and 132 formed on a pair of substrates 101 and 102, respectively, the alignment film 132 formed on the glass substrate 102 on the observer side is made of a material obtained by adding a photoisomerized compound to a photosensitive polymer and has anisotropic absorption all over the visible light wavelength region (approximately 400 nm to 750 nm).
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: May 3, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Patent number: 7927672
    Abstract: A cellulose acylate film is provided and is excellent in increasability of an in-plane retardation and a retardation in a thickness direction, from which an additive does not bleed out, and which is excellent in surface properties. The cellulose acylate film has a thickness of 40 ?m to 180 ?m and contains no retardation increasing agent. Retardation values Re and Rth of the cellulose acylate film meet the following formulae (III) to (V): 46?Re?100??(III) Rth=a?5.9Re??(IV) 520?a?670??(V) A polarizing plate and a VA mode liquid crystal display having wide viewing angle characteristics and small changes in color, which are using the cellulose acylate film, are provided.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: April 19, 2011
    Assignee: Fujifilm Corporation
    Inventors: Sumio Ohtani, Hiroyuki Kawanishi, Seimi Satake
  • Patent number: 7919648
    Abstract: The invention relates to compounds represented by Formula (1): wherein Ra is alkyl or the like; Rb is fluorine or —CF3; A is 1,4-cyclohexylene, 1,4-phenylene or the like; Z is a single bond, alkylene or the like; Y is a single bond, alkylene or the like; and m and n are an integer of approximately 0 to approximately 5.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 5, 2011
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventor: Takashi Kato
  • Publication number: 20110076424
    Abstract: Films, such as optical films that comprise a microstructured surface are described. The microstructures comprise the reaction product of a polymerizable resin composition comprising certain polyalkyl nitrogen or phosphorus onium fluoroalkyl sulfonyl salts as an antistatic agent. Also described is a polymerizable resin comprising at least one di(meth)acrylate monomer comprising at least two aromatic rings, a reactive diluent; and the polyalkyl nitrogen or phosphorus onium fluoroalkyl sulfonyl salts as an antistatic agent antistatic agent.
    Type: Application
    Filed: May 11, 2009
    Publication date: March 31, 2011
    Inventors: Mark J. Pellerite, James E. Lockridge, William M. Lamanna
  • Patent number: 7906184
    Abstract: An object of the present invention is to provide an optical film capable of contributing to reduction in thickness, preventing uneven heating, and favorably preventing light leak in black display, and an image display apparatus using such an optical film. An optical film of the present invention includes a polarizer, a first optical compensation layer having a refractive index profile of nx>ny=nz, and a second optical compensation layer having a refractive index profile of nx>ny>nz in the stated order. In the optical film, an angle formed between an absorption axis of the polarizer and a slow axis of the first optical compensation layer is +17° to +27° or ?17° to ?27°, an angle formed between the absorption axis of the polarizer and a slow axis of the second optical compensation layer is +85° to +95°, and an Nz coefficient of the second optical compensation layer is 1.2?Nz?2.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: March 15, 2011
    Assignee: Nitto Denko Corporatin
    Inventors: Seiji Umemoto, Ikuo Kawamoto, Kentarou Takeda
  • Patent number: 7892638
    Abstract: A durable optical film or element includes a polymerized structure having a microstructured surface and a plurality of surface modified colloidal nanoparticles of silica, zirconia, or mixtures thereof. Display devices including the durable microstructured film are also described.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: February 22, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Clinton L. Jones, Brant U. Kolb, Emily S. Goenner, John T. Brady, Christopher A. Haak
  • Publication number: 20110003091
    Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition. More specifically, the present invention relates to an acrylic pressure-sensitive adhesive composition comprising a) acrylic copolymers; b) a hydrophilic plasticizer; and c) a hydrophobic plasticizer. The acrylic pressure-sensitive adhesive composition according to the present invention has no mura under moisture and heat resistant condition, and thus has an excellent stain resistance of adherends, and an excellent wettability, endurance reliability, transparency and adhesion reliability, regardless of whether surface property of the adherend is hydrophillic or hydrophobic.
    Type: Application
    Filed: October 17, 2007
    Publication date: January 6, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong Han Kho, Hyun Ju Cho, Suk Ky Chang, Jang Soon Kim, Yoon Jung Baek
  • Patent number: 7862880
    Abstract: The invention concerns a film, in particular a stamping film, laminating film or sticker film, which has at least one anisotropic polymer layer of an at least partially oriented liquid crystal material. The anisotropic polymer layer has one or more first regions which form a first security feature and in which the anisotropic polymer layer has properties which linearly polarise or which rotate the direction of rotation, and one or more second regions which form a second security element and in which the anisotropic polymer layer has circularly polarising properties. The first security feature is visualised when viewed through a first polariser and the second security feature is visualised when viewed through a second polariser responsive to a different polarisation state from that of the first polariser.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: January 4, 2011
    Assignee: Leonhard Kurz Stiftung & Co. KG
    Inventors: Haymo Katschorek, Andreas Schilling, Mathias Seitz
  • Publication number: 20100316817
    Abstract: An optical film laminate that has predefined slit lines for enhancing both product accuracy and manufacturing speed in liquid-crystal display element manufacturing to radically improve manufacturing yield. The optical film laminate formed as a continuous web with the predefined slit lines for use in a continuous manufacturing system by laminating optically functional film sheets to liquid-crystal panels. The optical film laminate having defect-free regions having a predefined length corresponding to the dimension of a liquid-crystal panel and defective regions having a predefined length different from the defect-free region, based on the detected position of defects. The optical film laminate having a carrier film releasably laminated to an adhesive layer, wherein defect-free normal polarizing sheets and a defective polarizing sheets are formed on the carrier film by forming slit lines corresponding to above regions along the transverse direction of the optical film laminate.
    Type: Application
    Filed: August 3, 2010
    Publication date: December 16, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kouji KIMURA, Takayoshi YAMANO, Takuya NAKAZONO, Kazuo KITADA, Tomokazu YURA, Fumihito SHIMANOE, Satoru KOSHIO, Shouji SHIBATA
  • Patent number: 7850867
    Abstract: This invention relates to compositions and an assembly process for the manufacture of liquid crystal displays. The assembly process is especially advantageous because it can be easily scalable to roll-to-roll continuous manufacturing of liquid crystal displays. The invention is directed to a photoalignable top-sealing composition for top-sealing a liquid crystal display cell.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: December 14, 2010
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
  • Patent number: 7838088
    Abstract: A cyclic olefin-based polymer containing a repeating unit represented by formula (1), an optical material containing the cyclic olefin-based polymer, a polarizing plate containing the optical material, and a liquid crystal display device containing the polarizing plate: in which R1 represents a substituent; L represents a single bond or a divalent linking group, and forms an alcohol together with the —OH group; p represents an integer of 0 or 1; q represents an integer of from 0 to 3; r represents an integer of from 1 to 4; and R1 and L may be combined with each other to form a 5- to 7-membered ring.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: November 23, 2010
    Assignee: Fujifilm Corporation
    Inventors: Ryo Suzuki, Osamu Uchida, Saisuke Watanabe