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Mitsuyoshi Ichihashi, Kanagawa JP

Mitsuyoshi Ichihashi, Kanagawa JP

Patent application numberDescriptionPublished
20080198316Liquid Crystal Display - A liquid crystal display comprising a first polarization film, a first retardation region, a second retardation region, a liquid crystal layer, a liquid crystal cell, and a second polarization film disposed in this order, liquid crystal molecules of the liquid crystal layer being aligned in parallel with surfaces of the substrates at the time of dark state, wherein Re of the first retardation region is 70 nm to 330 nm, Nz value of the first retardation region is greater than 0 and less than 0.4, Re of the second retardation region is equal to 50 nm or less and an optical axis is simultaneously not included in the in-plane of the second retardation region, Rth of the second retardation region is 10 nm to 140 nm, a slow axis of the first retardation region is orthogonal to a transmissive axis of the first polarization film that is simultaneously in parallel with a slow axis direction of the liquid crystal molecules at the time of dark state, each of the first and second polarization films has at least a protective film on a plane close to the liquid crystal layer, and the corresponding protective film is a cellulose acylate film which meets the formulae (I) and (II) below.08-21-2008
20080218672Liquid Crystal Display Device - A novel liquid crystal display device is disclosed. The liquid crystal display device comprises a first polarizing film, a first retardation area with an Re of 70 to 330 nm and a value of Nz of not less than 0 to less than 0.5 and a slow axis perpendicular to a transmission axis of the first polarizing film; a second retardation region with an Re of not greater than 50 nm and an Rth of 10 to 140 nm; and a liquid crystal cell comprising a liquid crystal layer with a slow axis in a black state parallel to the transmission axis of the first polarizing film; and a second polarizing film in this order.09-11-2008
20090009693Liquid Crystal Composition, Optical Compensation Film and Liquid Crystal Display Device - An optical compensation film capable of contributing to improvement in a viewing angle characteristic of a liquid crystal display device, especially an IPS mode liquid crystal display device is proposed. A composition comprises at least one onium salt, at least one rod-like liquid crystalline compound, and at least one additive capable of promoting a vertical alignment of molecules of the rod-like liquid crystalline compound at an air interface; and an optical compensation film comprising an optically anisotropic layer formed of the composition are disclosed.01-08-2009
20090040433LIQUID CRYSTAL DISPLAY DEVICE AND COLOR FILM PLATE, AND PROCESSES FOR PRODUCING THE SAME - A novel liquid crystal display device is disclosed. The liquid crystal display device comprises a first substrate, a second substrate, liquid crystal held between the first substrate and the second substrate, patterned layers divided into fine areas, disposed on the first substrate, comprising at least a patterned color filter layer and a patterned first optically anisotropic layer laminated in the direction of the normal line of the substrate, and a barrier wall disposed at a boundary portion of the adjacent fine areas of the patterned layers.02-12-2009
20090040454OPTICALLY ANISOTROPIC FILM, BRIGHTNESS INCREASING FILM, LAMINATED OPTICAL FILM, AND IMAGE DISPLAY DEVICE USING THE SAME - An optically anisotropic film comprising a liquid crystal compound forming a nematic phase or smectic A phase, the liquid crystalline phase satisfying the following inequality:02-12-2009
20090059763FILTER FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, METHOD FOR PRODUCING THE SAME, OPTICAL RECORDING METHOD AND OPTICAL REPRODUCING METHOD - The present invention provides a filter for optical recording medium capable of preventing diffuse reflection of an information beam and a reference beam from a reflective layer in the optical recording medium and preventing occurrence of noise without causing shift in selective reflection wavelength, and distortion in a reproduced image even when an angle of incidence is changed, and an optical recording medium capable of recording a high density image by using the filter. Specifically, the present invention relates to the optical recording medium containing a first substrate, a recording layer which records information by utilizing holography, an optical compensation layer, a filter layer, and a second substrate, in this order, and the filter layer is a cholesteric liquid crystal layer.03-05-2009
20090168001LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device comprising a pair of substrates, at least one polarizing film provided outside the pair of substrates, a liquid crystal cell having a red color filter, a green color filter and a blue color filter provided inside the pair of substrates, a first retardation film compensating for light of a wavelength or wavelengths corresponding to a color or colors of any one or two of the three color filters, and a second retardation film compensating for light of a wavelength that is not compensated for by the first retardation film.07-02-2009
20090268143VERTICAL ALIGNMENT FILM AND VA MODE LIQUID CRYSTAL CELL - The present invention provides a vertical alignment film having a polymerizable liquid crystal compound having negative dielectric constant anisotropy, where the polymerizable liquid crystal compound is vertically aligned against the surface of the substrate, and then the polymerizable liquid crystal compound is fixed to form the vertical alignment film.10-29-2009
20090286005Anisotropic liquid surface forming agent and anisotropic liquid surface forming method - An agent comprising a substituted aromatic azo compound is capable of making a liquid surface express anisotropy in a simplified manner.11-19-2009
20090290100Cellulose Acylate Film, Method of Producing the Same, Cellulose Derivative Film, Optically Compensatory Film Using the Same, Optically-Compensatory Film Incorporating Polarizing Plate, Polarizing Plate and Liquid Crystal Display Device - A method of producing a cellulose derivative film, the method comprising: forming a film with a solvent cast method from a dope including a cellulose derivative satisfying following conditions (a) and (b): (a) at least one among three hydroxyl groups included in a glucose unit of cellulose is substituted by a substituent of which a polarizability anisotropy Δα represented as following Expression (1) is 2.5×1011-26-2009
20100045901OPTICAL FILM AND RETARDATION SHEET, AND LIQUID CRYSTAL COMPOUND - A compound of formula (1): wherein A02-25-2010
20100157204OPTICALLY ANISOTROPIC FILM AND LIQUID CRYSTAL DISPLAY DEVICE - An optically anisotropic film comprising at least one species of liquid crystal compound which exhibits a nematic phase or a smectic phase, the liquid crystal phase showing birefringence Δn(λ) at wavelength λ which satisfies the numerical expression (06-24-2010
20110051052POLARIZING FILM, LAMINATE, AND LIQUID CRYSTAL DISPLAY DEVICE - A polarizing film, satisfying DI′/P′≦4.3×1003-03-2011
20110063552LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL CELL - Disclosed a liquid crystal display device comprising at least one polarizing plate; and a liquid crystal cell comprising a multi-domain liquid crystal layer (03-17-2011

Patent applications by Mitsuyoshi Ichihashi, Kanagawa JP