Producing Polarized Light Patents (Class 252/585)
-
Publication number: 20110262661Abstract: 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: ApplicationFiled: April 21, 2011Publication date: October 27, 2011Applicant: FUJIFILM CorporationInventors: Masato Nagura, Aiko Yoshida, Naoyuki Nishikawa
-
Publication number: 20110255037Abstract: A cellulose acylate film containing a cellulose acylate and a sugar ester compound having from 1 to 12 pyranose structures or furanose structures in which at least one hydroxyl group is esterified, the film satisfying 40 nm?Re(550)?60 nm and 100 nm?Rth(550)?140 nm, and having a dimensional change of ?0.5 to 0.5% and an internal haze of at most 0.1%.Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Applicant: FUJIFILM CorporationInventors: Yoshiaki Hisakado, Jun Takeda, Isao Fujiwara, Masato Nagura, Nobutaka Fukagawa
-
Publication number: 20110236603Abstract: 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: ApplicationFiled: March 28, 2011Publication date: September 29, 2011Applicant: FUJIFILM CORPORATIONInventors: Hiroyuki HAGIO, Aiko YOSHIDA, Nobutaka FUKAGAWA
-
Publication number: 20110227008Abstract: Microstructured films comprising surface modified inorganic oxide particles, surface modified inorganic nanoparticles having a high refractive index, and polymerizable resins are described.Type: ApplicationFiled: November 20, 2009Publication date: September 22, 2011Inventors: Clinton L. Jones, Brant U. Kolb, Taun L. McKenzie, David B. Olson, Nathan K. Naismith
-
Patent number: 7985356Abstract: A non-linear optical device comprising a polymer configured to be photorefractive upon irradiation by a green laser. The polymer comprises a repeating unit including a moiety selected from the group consisting of the structures (M-1), (M-2) and (M-3), as defined herein.Type: GrantFiled: July 23, 2007Date of Patent: July 26, 2011Assignee: Nitto Denko CorporationInventors: Michiharu Yamamoto, Peng Wang
-
Publication number: 20110163281Abstract: A polarizer includes a polyvinyl alcohol-based resin film in which iodine is oriented by adsorption, wherein an iodine orientation ratio, represented by the following Equation I, is about 20% to about 30%, Iodine ? ? orientation ? ? ratio = R I R PVA , ( I ) RI being an average in-plane retardation value of iodine in infrared regions of 845.1 nm, 903.3 nm, 952.1 nm, 1000.0 nm, 1046.5 nm, and 1092.7 nm, and RPVA being an average in-plane retardation value of a polyvinyl alcohol-based resin in infrared regions of 845.1 nm, 903.3 nm, 952.1 nm, 1000.0 nm, 1046.5 nm, and 1092.7 nm.Type: ApplicationFiled: December 29, 2010Publication date: July 7, 2011Inventors: Chang Seok Bae, Han Soo Park, In Seok Oh, Hae Ryong Chung
-
Publication number: 20110143135Abstract: An adhesive composition and an optical member using the same, the adhesive composition including about 100 parts by weight of a (meth)acrylate copolymer including repeating units derived from a C1-20 alkyl (meth)acrylate monomer, an aromatic group-containing monomer, and a carboxyl group-containing monomer; about 0.01 to about 10 parts by weight of a crosslinking agent; about 0.01 to about 5 parts by weight of a silane coupling agent; and about 0.01 to about 5 parts by weight of a crosslinking catalyst.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Inventors: Woo Jin JEONG, Hee Yeon Ki, Hae Ryong Chung
-
Publication number: 20110108780Abstract: Provided is a cellulose acetate film for optical compensation, which has a low retardation value Rth in the film thickness direction.Type: ApplicationFiled: July 8, 2009Publication date: May 12, 2011Applicant: SK ENERGY CO., LTD.Inventors: Kinam Chung, Myounglae Kim, Jeeyoung Ahn, Hyukjun Kim, Wonseok Jang
-
Patent number: 7931702Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.Type: GrantFiled: May 24, 2007Date of Patent: April 26, 2011Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
-
Publication number: 20110089383Abstract: Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof. (In the formula, R1 and R2 independently represent a hydrogen atom, a sulfonic acid group, a lower alkyl group or a lower alkoxyl group; R3-R6 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; R7 represents a lower alkyl group or a lower alkoxyl group; and n represents 0 or 1.Type: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.Inventors: Yuichi Sadamitsu, Takahiro Higeta
-
Publication number: 20110091692Abstract: A method of making a polarizing article having high polarization efficiency, low haze, and no visible micro-cracks. The article is made by applying an aqueous polarizing dye solution to a surface of a substrate. The polarizing dye solution comprises at least one ammonium salt of a polarizing azoic dye, an activator, and at least one of an acid and a non-polarizing azoic dye.Type: ApplicationFiled: June 27, 2008Publication date: April 21, 2011Applicant: CORNING INCORPORATEDInventors: Jerome Vivien Davidovits, Bruno Dufour
-
Publication number: 20110075076Abstract: Azo compounds represented by formula (1) or (2) (In the formulas, A represents a phenyl group or naphthyl group that has at least 1 substituent. R1-R4 represent a hydrogen atom, lower alkyl group or lower alkoxy group, with at least one of R1-R4 being a lower alkoxy group that has a sulfone group. X represents an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group) and salts thereof.Type: ApplicationFiled: May 19, 2009Publication date: March 31, 2011Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.Inventors: Takuto Nishiguchi, Hiroaki Ohno, Takahiro Higeta, Yuichi Sadamitsu
-
Publication number: 20110068306Abstract: An ionic compound has the formula (I): in which, R1 is selected from the group consisting of hydrogen, a C1-C20 alkyl, and an aromatic group; R2 is selected from the group consisting of a carbonyl and a C1-C10 alkyl; and R3 is selected from the group consisting of an imidazole ring, a C1-C20 alkyl, an acrylic group, and an aromatic group; X? is selected from the group consisting of Cl?, Br?, I?, NO3?, AlCl4?, BF4?, CF3SO3?, (CF3SO3)?, CF3COO?, CH3COO?, and PF6?; and k is an integer 1 or 2. The ionic compound can be added in a pressure-sensitive adhesive of a polarizer of a liquid crystal display panel to avoid the phenomenon of the static electricity residual when the release film is removed from the pressure-sensitive adhesive.Type: ApplicationFiled: September 6, 2010Publication date: March 24, 2011Inventors: Cheng-Chung Liao, Min-Chih Lin
-
Publication number: 20110063546Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.Type: ApplicationFiled: November 17, 2010Publication date: March 17, 2011Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
-
Publication number: 20100308264Abstract: 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: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicant: FUJIFILM CORPORATIONInventors: Hiromichi FURUKAWA, Mamoru Sakurazawa
-
Publication number: 20100270518Abstract: The invention provides a polyvinyl alcohol film composition including: (A) 100 parts by weight of polyvinyl alcohol; and (B) 0.001 to 30 parts by weight of a multi-hydroxyl polyhedral oligomeric silsesquioxane (POSS). The POSS is soluble in polar solvents, but insoluble in water. The invention also provides a polarizing plate containing the polyvinyl alcohol film composition.Type: ApplicationFiled: September 24, 2009Publication date: October 28, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ho-May Lin, Wei-Chih Wang, Hui-Chun Pen
-
Patent number: 7817340Abstract: An ultra-thin polarizing glass article having two polarizing glass layers separated by a non-polarizing central region. The polarizing glass layers contain stretched or elongated metal particles and the non-polarizing central region contains elongated or stretched metal halide particle. The polarizing article has a thickness less than 200 micrometers.Type: GrantFiled: October 22, 2004Date of Patent: October 19, 2010Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, David G. Grossman, Larry G. Mann, Jeanne M. Mordarski
-
Publication number: 20100255192Abstract: The present invention relates to colloidal photonic crystals using colloidal nanoparticles and a method for the preparation thereof, wherein by adding a viscoelastic material into a solution containing the colloidal nanoparticles when preparing the colloidal photonic crystals, a uniform volume contraction occurs due to the elasticity of the viscoelastic material even when a nonuniform volume contraction occurs while drying a dispersion medium in the colloidal solution. Thus, it is possible to prepare 2 or 3 dimensional colloidal photonic crystals of large scale with no defects in less time.Type: ApplicationFiled: June 21, 2010Publication date: October 7, 2010Inventors: Young-jun HONG, Sang-hyuk Im
-
Patent number: 7796322Abstract: Natural lighting profiles are affected in a building facade and internal transparent membrane using a transparent sheet having one or more pixel elements, wherein each of the pixel elements is capable of being driven to control opacity (by shading). A programmable controller is used to send control commands to control opacity of the pixel elements, wherein the percentage of light transmitted through the display panel forming part of the facade is controlled via the controller.Type: GrantFiled: October 11, 2005Date of Patent: September 14, 2010Assignee: Massachusetts Institute of TechnologyInventors: Carlo Ratti, Assaf Biderman, Martin Ramos
-
Patent number: 7764427Abstract: An optical system, such as, for example, an illumination system or a projection lens of a microlithographic exposure system. The optical system can have an optical axis and include at least one optical element that includes an optically uniaxial material having, for an operating wavelength of the optical system, an ordinary refractive index no and an extraordinary refractive index ne. The extraordinary refractive index ne can be larger than the ordinary refractive index no. The optical element can absorb, at least for light rays of the operating wavelength entering the optical element with respect to the optical axis under an angle of incidence that lies within a certain angle region, a p-polarized component of the light rays significantly stronger than a s-polarized component of the light rays.Type: GrantFiled: December 21, 2006Date of Patent: July 27, 2010Assignee: Carl Zeiss SMT AGInventor: Karl-Heinz Schuster
-
Patent number: 7736548Abstract: A non-linear optical device comprising a polymer configured to provide a grating holding ratio of 20% or higher after about four minutes, wherein the polymer comprises a first repeating unit comprising a first moiety having formula (M-1) and a second repeating unit comprising a second moiety having formula (M-2), as defined herein.Type: GrantFiled: July 23, 2007Date of Patent: June 15, 2010Assignee: Nitto Denko CorporationInventors: Michiharu Yamamoto, Peng Wang
-
Publication number: 20100108959Abstract: 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: ApplicationFiled: September 25, 2009Publication date: May 6, 2010Inventors: Travis D. Carson, Sean M. Casey, Isaac K. Iverson, Wonewoo Seo, Suk-Wah Tam-Chang
-
Publication number: 20100075070Abstract: The invention relates to an optical film comprising a first optically anisotropic layer formed of a composition comprising, at least, a liquid crystal compound and a fluorinated surfactant, and a second optically anisotropic layer comprising at least one selected from the group consisting of cycloolefin base homopolymers and copolymers, wherein a dynamic friction coefficient between the two sides of the optical film is equal to or smaller than 1.0.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: FUJIFILM CorporationInventors: Michio NAGAI, Akira Yamamoto
-
Patent number: 7674518Abstract: The present invention provides a polyvinyl alcohol film having a correlation length of 200 nm or less, the correlation length being derived from the result of light scattering measurement using a He—Ne laser having a wavelength of 633 nm as a light source.Type: GrantFiled: December 19, 2005Date of Patent: March 9, 2010Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Seiichirou Hayakawa, Syuichi Kitamura, Yukari Nishimoto, Akihiko Chigami
-
Publication number: 20100047480Abstract: The present invention can provide cellulose ester pellets, a cellulose ester film, a manufacturing method thereof, a polarizing plate and a liquid crystal display which minimize a manufacturing load, a facility load and an environmental load, each being given by evaporation or recovery (collection) of solvents and which have excellent optical properties, less coloring and high processing stability, and its manufacturing method. The cellulose ester pellets contains cellulose ester and at least one combination selected from combination A, combination B and combination C, the cellulose ester pellets containing the at least one combination in an amount of from 0.001 to 1.Type: ApplicationFiled: November 22, 2007Publication date: February 25, 2010Applicant: C/O KONICA MINOLTA OPTO, INC.Inventors: Takatugu Suzuki, Takashi Murakami
-
Publication number: 20100046072Abstract: A composite metal nanorod, including a core nanorod and a shell, the core nanorod being covered with the shell to form a core-shell structure, wherein the composite metal nanorod contains at least two different metals, and wherein the composite metal nanorod has an equivalent-volume-sphere radius of 15 nm or smaller and has an aspect ratio of 1.1 to 10.Type: ApplicationFiled: August 19, 2009Publication date: February 25, 2010Applicant: FUJIFILM CorporationInventor: Yuki MATSUNAMI
-
Publication number: 20090272950Abstract: High durable polarized film comprising a radiation curable PSA layer for lamination in TFT/LCD applications have high humidity and heat resistance. In one embodiment, the adhesive comprises a UV curable acrylic polymer, a compatible tackifier, a multifunction unsaturated oligomer, and a long chain alkyl acrylate monomer.Type: ApplicationFiled: May 7, 2009Publication date: November 5, 2009Inventors: MING CHANG LU, Peter D. Palasz
-
Patent number: 7611759Abstract: The present invention provides a polarizer that includes a supporting member and a liquid crystal polarizing layer that is coated on the supporting member. The liquid crystal polarizing layer includes liquid crystal molecules that are arranged in a predetermined direction and polarizing molecules that are combined with the liquid crystal molecules in order to absorb light oscillating in predetermined direction. The resulting polarizer is thin and highly effective.Type: GrantFiled: April 11, 2005Date of Patent: November 3, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Duck-Jong Suh, Bong-Sung Seo, Dae-Ho Choo
-
Publication number: 20090267031Abstract: To provide a dye capable of forming an anisotropic dye film showing high dichroism and having a high degree of molecular orientation, a composition containing the dye, an anisotropic dye film using the dye and a polarizing element. A trisazo dye, of which the free acid form is represented by the following formula (1), wherein at least one of B1 and D1 has at least one substituent as defined by the following Q1, a dye composition for an anisotropic dye film containing the dye, an anisotropic dye film and a polarizing element using the anisotropic dye film: Q1: an alkyl group or alkoxy group substituted by a hydrogen bond-forming group: wherein A1 is a phenyl group or a naphthyl group, each of B1 and D1 is a phenylene group or a naphthylene group, X1 is an amino group which may be substituted or a hydroxyl group, and m is 0 or 1.Type: ApplicationFiled: December 14, 2005Publication date: October 29, 2009Applicant: Mitsubishi Chemical CorporationInventors: Hideo Sano, Masami Kadowaki, Ryuichi Hasegawa, Wataru Shimizu
-
Publication number: 20090224217Abstract: A cellulose acylate film is provided and contains an additive. Tg of the cellulose acylate film is lower by 5 to 50° C. or the half value width of the diffraction peak at 2?=10 to 15° in the X-ray diffraction pattern of the cellulose acylate film after heating at 200° C. for 3 hours is 110 to 300%, each compared with a cellulose acylate film not containing the additive. An optically compensatory film, and a polarizing plate and a liquid crystal display using the film are provided.Type: ApplicationFiled: April 6, 2006Publication date: September 10, 2009Applicant: FUJIFILM CorporationInventors: Hajime Nakayama, Yousuke Nishiura, Takako Nishiura
-
Publication number: 20090167994Abstract: A method of manufacturing a polarizer is provided that makes it possible to manufacture a polarizer prevented from curling even when a liquid is brought into contact with a hydrophilic polymer film by being sprayed. A method of manufacturing a polarizer includes a swelling step A for swelling a hydrophilic polymer film 1 by bringing it into contact with a swelling liquid 2, a dyeing step B for dyeing the hydrophilic polymer film 1 by bringing it into contact with a dye liquid 3 containing a dichroic material, and a crosslinking/stretching step C for crosslinking the hydrophilic polymer film 1 by bringing it into contact with a crosslinking liquid 4 and further stretching it. In the method, the contact with the swelling liquid in the swelling step A is carried out in the gas phase by spraying the swelling liquid 2 onto both surfaces of the hydrophilic polymer film 1.Type: ApplicationFiled: November 27, 2007Publication date: July 2, 2009Applicant: NITTO DENKO CORPORATIONInventors: Mitsuru Suzuki, Seiji Umemoto, Kazuya Hada
-
Publication number: 20090169774Abstract: 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: ApplicationFiled: December 24, 2008Publication date: July 2, 2009Inventors: Minjin Ko, Myungsun Moon, Kiyoul Lee, Kim YunBong, Jaeho Cheong, Bumgyu Choi, Daeho Kang
-
Publication number: 20090159857Abstract: An optical film, which has been subjected to an orientation treatment, containing a low-molecular weight compound, in which a birefringence ?n(550 nm) is larger than zero (0) in an orientation direction, and the optical film satisfies the following expressions (1) and (2); and a phase difference plate, a polarizing plate and a liquid crystal display using the same: 0.5<?n(450 nm)/?n(550 nm)<1.0; and??Expression (1) 1.05<?n(630 nm)/?n(550 nm)<1.5.Type: ApplicationFiled: February 7, 2007Publication date: June 25, 2009Applicant: FUJIFILM CorporationInventors: Shigeki Uehira, Michitaka Matsuumi, Mamoru Sakurazawa, Masaki Okazaki, Naoyuki Nishikawa
-
Publication number: 20090122410Abstract: An anti-reflection film, which comprises: a low refractive index layer that is formed by curing a coating solution composition comprising: a fluorine-free copolymer containing a constituent having a polysiloxane structure represented by formula (1) as defined in the specification in a main chain and a constituent containing a hydroxyl group in a side chain; and a fluorine-containing copolymer; a polarizing plate wherein the anti-reflection film is used as one of two protective films for a polarizing film; and an image display device wherein the anti-reflection film or the polarizing plate is used in the outermost surface of the display.Type: ApplicationFiled: October 12, 2006Publication date: May 14, 2009Inventors: Akio Tamura, Masaki Noro, Masato Nagura
-
Publication number: 20090091825Abstract: A plastic polarized lens 1 contains a lens substrate 2, which is obtained by curing through polymerization a polymerization composition having a refractive index of 1.60 or more containing a thiourethane polymerization composition or a thioepoxy polymerization composition, having embedded therein a polarized film 14, which is obtained by forming antireflection layers 14B having a five-layer structure of Al2O3 ZrO2 accumulated alternately on both surfaces of a polarized film substrate 14A obtained by curving an iodine polarized film to a prescribed curvature, followed by cutting into a circular outer shape. According to the constitution, such a plastic polarized lens can be obtained that is reduced in reflection on the surface of the polarized film embedded in the polymerization composition and has good polarizing capability.Type: ApplicationFiled: April 25, 2007Publication date: April 9, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Toru Saito, Toshihito Kanai
-
Publication number: 20090081388Abstract: An optical cellulose ester film comprising a cellulose ester (A); at least one ester based plasticizer (B) selected from ester based plasticizers composed of a polyhydric alcohol and a univalent carboxylic acid, or ester based plasticizers composed of a polyvalent carboxylic acid and a monohydric alcohol; at least one stabilizer (C) selected from the group consisting of a phenol based stabilizer, a hindered amine based stabilizer, or a phosphorous based stabilizer; and a hydrogen bonding solvent (D).Type: ApplicationFiled: November 14, 2006Publication date: March 26, 2009Inventors: Akihiko Takeda, Kazuto Kiyohara, Satomi Kawabe, Yasuki Nagai, Takayuki Suzuki, Kazuaki Nakamura, Takashi Konishi
-
Publication number: 20090040609Abstract: The present invention provides an anisotropic dye film having a high dichroic ratio. For this reason, the present invention uses a composition for an anisotropic dye film containing an electron-deficient discotic compound and an electron-rich compound.Type: ApplicationFiled: April 21, 2006Publication date: February 12, 2009Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Ryuichi Hasegawa, Masaaki Nishimura, Tomio Yoneyama, Hideo Sano, Wataru Shimizu, Masami Kadowaki, Kiyoshi Sugiyama
-
Publication number: 20090029073Abstract: A cellulose-film modifier, having a compound represented by the following Formula (1): wherein R1 represents a hydrogen atom or an aliphatic or aromatic acyl group; R2, R3 and R4 each represent a hydrogen atom or an aliphatic or aromatic group; and at least one of R2, R3 and R4 represents an aliphatic group bonding via its secondary carbon; a cellulose composition, an optical cellulose film, a polarizing plate-protecting film, a polarizing plate, and a liquid crystal display device.Type: ApplicationFiled: July 23, 2008Publication date: January 29, 2009Applicant: FUJIFILM CorporationInventors: Akihiro MATSUFUJI, Takeichi TATSUTA, Yutaka NOZOE
-
Publication number: 20090027597Abstract: A method for producing a polarizing film of the present invention comprises a step (1) of preparing a lyotropic liquid crystalline solution having electric conductivity of not more than 50 ?S/cm (expressed in terms of 0.05% by weight) and containing a dichroic dye and a solvent, a step (2) of preparing a base material having at least one surface subjected to a hydrophilization treatment, and a step (3) of coating the solution prepared in the step (1) on the hydrophilized surface of the base material prepared in the step (2) at a coating rate of not less than 100 mm/second, and drying the solution. The method of the present invention can easily produce a polarizing film having a high dichroic ratio.Type: ApplicationFiled: March 20, 2007Publication date: January 29, 2009Applicant: NITTO DENKO CORPORATIONInventors: Yasuko Iwakawa, Shuusaku Nakano, Tetsuo Inoue, Shouichi Matsuda
-
Patent number: 7446130Abstract: Ionic colloidal crystals (ordered multicomponent colloids formed by attractive electrostatic interactions) may be produced by controlling the surface potential and relative size of multiple populations of colloidal particles in suspension. Such suspensions are dried or otherwise caused to precipitate out the particles in ordered arrays. The crystal structure of the arrays may be controlled by appropriate choices of particle materials, sizes, and charge ratios.Type: GrantFiled: April 27, 2003Date of Patent: November 4, 2008Assignee: Massachusetts Institute of TechnologyInventors: Garry R. Maskaly, Yet-Ming Chiang, W. Craig Carter, R. Edwin Garcia
-
Publication number: 20080252824Abstract: An in-cell polarizer is provided which can achieve a liquid crystal device having excellent drive and display characteristics in an active drive system. A composition for the in-cell polarizer comprises a dye and a solvent and has an electric conductivity of 25 mS/cm or less.Type: ApplicationFiled: March 24, 2006Publication date: October 16, 2008Applicant: Mitsubishi Chemical CorporationInventors: Masami Kadowaki, Tomio Yoneyama
-
Patent number: 7393570Abstract: A broad band cholesteric liquid crystal film of the present invention is a cholesteric liquid crystal film obtained by coating a liquid crystal mixture containing a polymerizable mesogen compound (a), a polymerizable chiral agent (b) and a photoisomerizable material (c) on a substrate to ultraviolet polymerize a coat of the liquid crystal mixture, and has a reflection bandwidth of 200 nm or more. A broad band cholesteric liquid crystal film of the present invention has a broad reflection band, is of a thin type and can be manufactured in less of manufacturing steps.Type: GrantFiled: January 8, 2004Date of Patent: July 1, 2008Assignee: Nitto Denko CorporationInventors: Kentarou Takeda, Kazutaka Hara, Naoki Takahashi, Takahiro Fukuoka
-
Publication number: 20080123189Abstract: An adhesive of the invention is used for polarizing plate to provide a transparent protective film on at least one side of a polarizer and comprises a resin solution comprising a polyvinyl alcohol-based resin, a crosslinking agent and a colloidal metal compound with an average particle size of 1 nm to 100 nm, wherein 200 parts by weight or less of the colloidal metal compound is added to 100 parts by weight of the polyvinyl alcohol-based resin. The adhesive for polarizing plate can reduce the occurrence of knicks.Type: ApplicationFiled: June 7, 2007Publication date: May 29, 2008Applicant: NITTO DENKO CORPORATIONInventors: Tetsurou Ikeda, Masakatsu Urairi, Akinobu Souma, Shigenori Morita, Chieko Kitaura, Junichi Fujisawa, Reiko Akari, Shigeki Kawabe, Masayuki Satake
-
Publication number: 20080099724Abstract: The present invention provides one or more dichroic dyes which exhibit high solubility in liquid crystal and a high order parameter. The dichroic dyes each have a first substituent having at least one cis-cyclohexane ring and/or a second substituent having at least one trans-cyclohexane ring. The dichroic dye(s) may be provided as a mixture including at least a first dichroic dye having at least the first substituent and a second dichroic dye having at least the second substituent. The dichroic dye(s) may also be provided as a plurality of dichroic dyes, each of the molecules of which has at least the first substituent and the second substituent. The present invention also provides a liquid crystal composition and a liquid crystal element including the one or more dichroic dyes.Type: ApplicationFiled: October 25, 2007Publication date: May 1, 2008Inventors: Koji Takaku, Takashi Kato
-
Publication number: 20080013173Abstract: A polarizing plate protective film manufacturing method, comprises: preparing a mixture containing a cellulose ester, a triazine ring compound, a phenol compound and a compound represented by Formula (L); heating and melting the mixture; and casting the melted mixture to form a film.Type: ApplicationFiled: July 3, 2007Publication date: January 17, 2008Applicant: KONICA MINOLTA OPTO, INC.Inventors: Rumiko YAMADA, Koichi SAITO, Kenzo KASAHARA
-
Patent number: 7311952Abstract: Reflective liquid crystalline polymer films having increased bandwidth have a single layer of liquid crystalline material with short, long, and medium pitch of the helical molecular structure of the liquid crystalline polymer. The films are easily produced by a readily reproducible and economic process of low complexity.Type: GrantFiled: December 2, 2005Date of Patent: December 25, 2007Assignee: Wacker Chemie AGInventor: Eckhard Hanelt
-
Patent number: 7304147Abstract: The present invention relates to an azo compound represented by the following formula (1): wherein A denotes a phenyl group having 1 to 3 substituents such as sulfonic acid group, amino group, lower alkyl groups and lower alkoxyl groups, or a naphthyl group, B denotes hydrogen atom, sulfonic acid group, a lower alkyl group, a lower alkoxyl group or the like, each of R1 to R4 independently denotes hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxyl group or the like, D denotes —NHCO—, —N?N— or —NH—, E denotes hydrogen atom, a lower alkyl group or a phenyl group having 1 to 3 substituents such as hydroxyl group and amino group, n denotes 0 or 1, and m denotes 0 or 1, or a salt thereof, or a copper complex compound of either of them, which is used for a polarizing plate having excellent polarization performance and durability and furthermore little color leakage in visible light range.Type: GrantFiled: April 15, 2004Date of Patent: December 4, 2007Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Inventors: Yuichi Sadamitsu, Kazuyuki Kawabe
-
Patent number: 7282574Abstract: The present invention relates to a azo dyestuff compound of the following formula (I), of which the free acid is represented by the following formula: wherein R1, R2, R3, R4, and n are defined as in the specification. The azo dyestuff compound of formula (I) of the present invention is used for preparing polarizing film. The present invention also relates to a polarizing film comprising the azo dyestuff compound of formula (I), which has excellent degree of polarization.Type: GrantFiled: September 12, 2006Date of Patent: October 16, 2007Assignee: Everlight USA, Inc.Inventor: Ming-Chin Cheng
-
Patent number: 7276268Abstract: Poly-azo compound selected from the group consisting compounds of the formula (I) and compounds of the formula (II), (wherein, Me represents copper, nickel, zinc or iron, A represents a naphthyl group having 1 to 3 sulfonic groups and further optionally having an alkyl group or alkoxy group, R1 and R2 represent each independently a hydrogen atom, alkyl group or alkoxy group, and R3 represents an amino group or hydroxyl group.).Type: GrantFiled: November 12, 2004Date of Patent: October 2, 2007Assignee: Sumitomo Chemical Company, LimitedInventors: Toru Ashida, Narutoshi Hayashi
-
Patent number: 7259913Abstract: A Faraday rotator in which the isolation function based on a temperature rise is not deteriorated even when the Faraday rotator is used for a high output laser of not smaller than 1W output at a wavelength of not larger than 1.1 ?m includes sapphire crystals or rutile crystals bonded as radiation substrates to the incident side and outgoing side of a bismuth substituted type rare earth metal iron garnet crystal (RIG) film, the thickness of the RIG film being not smaller than 130 ?m and not larger than 200 ?m.Type: GrantFiled: February 6, 2006Date of Patent: August 21, 2007Assignee: Sumitomo Metal Mining Co. Ltd.Inventor: Junji Iida