| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Twisted alignment mode liquid crystal display device | US14600786 | 2015-01-20 | US09885910B2 | 2018-02-06 | Takahiro Ohno; Rikio Inoue |
| Provided is a liquid crystal display device in which the contrast is improved. The liquid crystal display device includes a first polarizing film, a second polarizing film, a twisted alignment mode liquid crystal and a backlight unit with a light-collecting prism sheet which is disposed on the back side of the liquid crystal cell, the first retardation film and the second retardation film each satisfy Formulae (I) and (II): 1 nm≦Re(550)≦50 nm (I) 120 nm≦Rth(550)≦220 nm (II); the liquid crystal cell has a depolarizing index (DI value) of 0.000800 or less. | ||||||
| 22 | TWISTED ALIGNMENT MODE LIQUID CRYSTAL DISPLAY DEVICE | US14600786 | 2015-01-20 | US20150168780A1 | 2015-06-18 | Takahiro OHNO; Rikio INOUE |
| Provided is a liquid crystal display device in which the contrast is improved. The liquid crystal display device includes a first polarizing film, a second polarizing film, a twisted alignment mode liquid crystal and a backlight unit with a light-collecting prism sheet which is disposed on the back side of the liquid crystal cell, the first retardation film and the second retardation film each satisfy Formulae (I) and (II): 1 nm≦Re(550)≦50 nm (I) 120 nm≦Rth(550)≦220 nm (II); the liquid crystal cell has a depolarizing index (DI value) of 0.000800 or less. | ||||||
| 23 | Compensation film, manufacturing method thereof and liquid crystal display using the same | US10878030 | 2004-06-29 | US08599339B2 | 2013-12-03 | Man Hoan Lee; Ha Young Lee |
| Disclosed is a compensation film, a manufacturing method thereof and a liquid crystal display, which can obtain a wider viewing angle. The liquid crystal display can secure a wider viewing angle by providing the compensation film formed of multi-layered cholesteric liquid crystal layers. | ||||||
| 24 | Liquid crystal display device | US10833280 | 1997-06-18 | USRE41281E1 | 2010-04-27 | James Hanmer; Mark Verrall |
| The invention relates to a liquid crystal display device comprising a liquid crystal cell and at least one compensation film or a combination of polarizer and optical compensators comprising at least one compensation film, said compensation film comprising at least one layer of an isotropic polymer obtainable by polymerization of a mixture of a polymerizable mesogenic material comprising: a) compound having one or two more polymerizable functional group, in the presences b) an initiator, c) optionally a non-polymerizable compound having two or more polymerizable functional groups and d) optionally a stabilizer, characterized in that said layer of an anisotropic polymer has a hometropic or tilted hometropic molecular orientation. The invention also relates to methods of manufacturing said compensation films. The invention further relates to mixtures of chiral polymerizable mesogenic material used for manufacturing of said compensation films. | ||||||
| 25 | O-Plate Having Excellent Durability and Itegrated Polarizing Plate Comprising the Same | US12224872 | 2007-11-15 | US20090117293A1 | 2009-05-07 | Du-Hyun Shin; Chang-Hun Yun; Byoung-Kun Jeon; Moon-Soo Park |
| There are provided an optical compensation film including an alignment film whose adhesiveness to a substrate and a liquid crystal layer and alignment property are excellent when a novel substrate is used to solve the problem regarding deteriorated durability being caused when a retardation film including a liquid crystal film is used under a hot and humid environment, and an integrated polarizing plate comprising the same. The O-plate includes a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that is composed of polyvinyl alcohol, a multifunctional acrylate monomer, a compatibilizing agent, a photo initiator and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film. | ||||||
| 26 | Negative retardation film | US11758223 | 2007-06-05 | US07477343B2 | 2009-01-13 | Karl Skjonnemand; Owain Llyr Parri; Donald Gordon Graham; Tara Perrett |
| The invention relates to a negative birefringent retardation film comprising polymerised liquid crystal (LC) material with helically twisted structure and planar orientation, its use in compensators and electrooptical displays like liquid crystal displays, and to compensators and liquid crystal displays comprising such a negative retardation film. | ||||||
| 27 | Retardation optical element and method of producing the same, and polarization element and liquid crystal display, each including retardation optical element | US11713756 | 2007-03-05 | US07352422B2 | 2008-04-01 | Keiji Kashima |
| Provided herein is a retardation optical element 10 that produces no bright and dark fringes on a displayed image even when placed between a liquid crystal cell 104 and a polarizer 102B and thus can effectively prevent lowering of display quality. The retardation optical element 10 includes a retardation layer 12 having a cholesteric-regular molecular structure with liquid crystalline molecules in planar orientation. The helical pitch in the molecular structure of the retardation layer 12 is so adjusted that the retardation layer 12 can, owing to its molecular structure, selectively reflect light whose wavelength falls in a range different from the wave range of light incident on the retardation layer 12 (the selective reflection wave range of the retardation layer is either shorter or longer than the wave range of the incident light). Further, the retardation layer 12 has two opposite main surfaces (larger surfaces) 12A and 12B that are perpendicular to each other in the direction of thickness, where the directions of the directors Da of the liquid crystalline molecules on the entire area of the one surface 12A are substantially the same, and those of the directors Db of the liquid crystalline molecules on the entire area of the other surface 12B are also substantially the same. | ||||||
| 28 | Optical film, method for manufacturing the same, and phase difference film and polarizing plate using the same | US10499963 | 2003-01-22 | US07270855B2 | 2007-09-18 | Takashi Yamaoka; Shuuji Yano; Junichi Adachi; Masayuki Kawai; Kanako Wasai; Nao Murakami |
| A method for preparing an optical film, which comprises applying and developing an application liquid mixture containing a liquid crystal monomer, a chiral agent and a polymerization initiator on an orientation substrate, subjecting the resultant developed layer to a heat treatment, to orient the monomer to a cholesteric structure, and then subjecting the developed layer to a poltmerization treatment, to polymerize the oriented liquid crystal monomer, thereby forming an optical film exhibiting a selective reflection wave length of 100 to 320 nm. An optical film prepared by the above method is reduced in the coloring due to selective reflection. | ||||||
| 29 | Cholesteric reflective retardation optical element with directors at top surface of optical element parallel to those at the bottom surface of the optical element | US10606286 | 2003-06-26 | US07202926B2 | 2007-04-10 | Keiji Kashima |
| Provided herein is a retardation optical element 10 that produces no bright and dark fringes on a displayed image even when placed between a liquid crystal cell 104 and a polarizer 102B and thus can effectively prevent lowering of display quality. The retardation optical element 10 includes a retardation layer 12 having a cholesteric-regular molecular structure with liquid crystalline molecules in planar orientation. The helical pitch in the molecular structure of the retardation layer 12 is so adjusted that the retardation layer 12 can, owing to its molecular structure, selectively reflect light whose wavelength falls in a range different from the wave range of light incident on the retardation layer 12 (the selective reflection wave range of the retardation layer is either shorter or longer than the wave range of the incident light). Further, the retardation layer 12 has two opposite main surfaces (larger surfaces) 12A and 12B that are perpendicular to each other in the direction of thickness, where the directions of the directors Da of the liquid crystalline molecules on the entire area of the one surface 12A are substantially the same, and those of the directors Db of the liquid crystalline molecules on the entire area of the other surface 12B are also substantially the same. | ||||||
| 30 | Optical compensator for a liquid crystal display | US11043308 | 2005-01-27 | US20060055854A1 | 2006-03-16 | Tsai-An Yu; Pi-Sung Lin; Chih-Jen Chen; Chiu-Fang Huang; Wen-Yi Lin |
| An optical compensator includes a C-plate adapted to be coupled to a liquid crystal cell and made from a polymer. The C-plate has a layer thickness ranging from 5 to 60 μm. The polymer is polyvinyl alcohol, has a polymerization degree greater than 2000 and less than 5000, and is cross-linked so that the C-plate has an optical axis substantially parallel to the direction of normally incident light, and so that the C-plate has a plate retardation, along the layer thickness of the C-plate, greater than 60 nm. | ||||||
| 31 | Retardation coating | US10855662 | 2004-05-27 | US20050266175A1 | 2005-12-01 | Yong Hsu; Richard Pokorny; Steven Solomonson; Marc Radcliffe; Yifan Zhang |
| An optical body includes an optical element, an alignment layer disposed on the optical element, and a liquid crystal layer disposed on the alignment layer. The liquid crystal layer has a retardation (R) at all wavelengths (λ) from 400 nm to 700 nm equal to a formula R=λ/4±20 nm. The liquid crystal layer can include from 85 to 99 phr of an achiral liquid crystal material, from 1 to 15 phr of a chiral nematic liquid crystal material, and a surfactant. | ||||||
| 32 | Liquid crystal display with particular reflective switched states | US09269503 | 1998-07-30 | US06930738B1 | 2005-08-16 | Yasushi Kaneko; Takashi Akiyama; Masafumi Ide |
| A liquid crystal display device is made by disposing an STN cell (16) in which nematic liquid crystal (6) having a twist angle in the range from 180° to 270° is filled and sandwiched between a first substrate (1) having a first electrode (3) and a second substrate (2) having a second electrode (4) at the center, providing a retardation film (13) and an absorption-type polarizing film (8) outside the second substrate (2) in order, and providing a reflection-type polarizing film (10) and a light absorbing film (11) outside the first substrate (1) in order. This enables a metallic silver background due to the reflected light by the reflection-type polarizing film (10) and display in black or in color by light passing through the reflection-type polarizing film (10) being absorbed in the light absorbing film (11) or only light of specific color being reflected. | ||||||
| 33 | Compensation film, manufacturing method thereof and liquid crystal display using the same | US10878030 | 2004-06-29 | US20050140880A1 | 2005-06-30 | Man Lee; Ha Lee |
| Disclosed is a compensation film, a manufacturing method thereof and a liquid crystal display, which can obtain a wider viewing angle. The liquid crystal display can secure a wider viewing angle by providing the compensation film formed of multi-layered cholesteric liquid crystal layers. | ||||||
| 34 | Liquid crystal display comprising liquid crystal cell, linearly polarizing membrane, cholesteric liquid crystal layer and quarter wave plate | US09705825 | 2000-11-06 | US06519017B1 | 2003-02-11 | Mitsuyoshi Ichihashi; Ken Kawata; Kohei Arakawa |
| A liquid crystal display comprises a liquid crystal cell, a linearly polarizing membrane, a cholesteric liquid crystal layer and a quarter wave plate. The cholesteric liquid crystal layer is divided into two or more areas having different spiral pitches of cholesteric liquid crystal. The quarter wave plate comprises an optically anisotropic layer A and an optically anisotropic layer B. One of the optically anisotropic layers A and B is formed from liquid crystal molecules. The other is formed from liquid crystal molecules or made of a polymer film. The quarter wave plate gives a retardation value per wavelength within the range of 0.2 to 0.3 at each wavelength of 480 nm, 550 nm and 630 nm. | ||||||
| 35 | Reflecting type liquid crystal display device | US09585924 | 2000-06-02 | US06429920B1 | 2002-08-06 | Atsushi Dohi |
| An object of the invention is to obtain achromatic display with high contrast and high lightness. A reflection type liquid crystal display device of NB mode comprises a liquid crystal cell having an STN type liquid crystal layer; a first phase difference plate; a second phase difference plate; a polarizing plate, the first and second phase difference plates and polarizing plate being disposed on one surface of the liquid crystal cell in this order; and a reflecting layer disposed in the liquid crystal cell, the reflecting layer forming the other surface of the liquid crystal cell. The liquid crystal layer retardation &Dgr;nLC.dLC, the first phase difference plate retardation &Dgr;n1.d1 and the second phase difference plate retardation &Dgr;n2.d2 are selected from the ranges of 660 nm to 830 nm, 120 nm to 240 nm and 300 nm to 430 nm, respectively. A twist angle &khgr; is selected from the range of 220° to 260°. Predetermined angles &thgr;, &phgr; and &phgr; are selected from the ranges of −130° to −75 , −20° to −60° and −15° to −45°, respectively. | ||||||
| 36 | Optical device with combined alignment and anisotropic layers | US108559 | 1998-07-01 | US6157427A | 2000-12-05 | Kirstin Ann Saynor; Martin David Tillin; Michael John Towler; Lesley Anne Judge |
| An optical device of the present invention, includes: an anisotropic layer containing anisotropic molecules, and an alignment layer adjacent the anisotropic layer. The alignment layer serves to align the anisotropic molecules in an adjacent surface region of said anisotropic layer. The alignment layer also includes a twisted molecular structure so as to define a twisted optical retarder. | ||||||
| 37 | Liquid crystal color display device | US560240 | 1995-11-21 | US5745204A | 1998-04-28 | Toshiaki Hoshino |
| A liquid crystal color display device comprises a liquid crystal cell 3 having a liquid crystal layer with an angle of twist being within a range of 180.degree. to 270.degree. and a pair of electrode substrates intervening the liquid crystal layer therebetween, a twist phase plate 4 serving as a birefringent layer, and a pair of polarizers 2,5. The value of .DELTA.n.cndot.d of the phase plate 4, wherein .DELTA.n represents a refractive index anisotropy and d represents a thickness, and that of the liquid crystal layer in voltage-free condition are substantially at the same level within a range of 1.4 to 2.0 .mu.m. The value of .DELTA.n.cndot.d of the liquid crystal layer can be continuously changed by appropriately controlling a voltage applied thereto. By this, colorization of the device is possible. | ||||||
| 38 | Optical device having an optically transparent birefringent medium that selectively shifts the optical axis | US261342 | 1994-06-16 | US5659411A | 1997-08-19 | Keiichi Nito; Akio Yasuda; Nobue Kataoka; Hidehiko Takanashi; Eriko Matsui; Yang Ying Bao; Fumitomo Hide |
| An optical device according to this invention includes a phase modulating optical unit comprising a plurality of optically transparent base members each of which includes an optically transparent electrode and an alignment film formed in this order, and an optically transparent birefringent medium, wherein the optically transparent base members are spaced from one another at predetermined intervals so that the electrode and the alignment film of a base member is confronted to the electrode and the alignment film of another base member, and at least one kind of liquid crystal selected from the group consisting of ferroelectric liquid crystal (FLC), antiferroelectric liquid crystal (AFLC) and smectic liquid crystal having an electro clinic effect (SmA) (or mixed liquid crystals thereof) is injected into gaps between the base members. | ||||||
| 39 | Optical information processor employing a phase type spatial light modulator | US383098 | 1995-02-03 | US5579136A | 1996-11-26 | Atsushi Fukui; Kanji Nishii; Masami Ito |
| In an optical information processor, phase-type spatial modulation of light is achieved by placing a twisted nematic liquid crystal cell between two polarizers, such that a direction of alignment of liquid crystal molecules at an input side of the liquid crystal cell is parallel to a transmission access of a first one of the polarizers, and such that a direction of alignment liquid crystal molecules at an output side of the liquid crystal cell is parallel to a transmission access of a second one of the polarizers. Also, phase modulation which is substantially free from amplitude variations can be realized by placing two twisted nematic liquid crystal cells between two polarizers. In such an arrangement, a direction of alignment of the liquid crystal molecules at an input side of a first liquid crystal cell is parallel to a transmission access of a first polarizer, and a direction of alignment of liquid crystal molecules at an output side of the first liquid crystal cell is perpendicular to a direction of alignment of the liquid crystal molecules at an input side of the second liquid crystal cell. The direction of alignment of the liquid crystal molecules of the second liquid crystal cell is perpendicular to a transmission access of the second polarizer. The two liquid crystal cells have identical drive voltages applied thereto, and have identical retardations and twist angles. However, the twist angle of the first liquid crystal cell is in an opposite direction to that of the second liquid crystal cell. | ||||||
| 40 | Liquid crystalline polymer film, process for producing same, and utilization thereof | US488262 | 1995-06-07 | US5578243A | 1996-11-26 | Hitoshi Mazaki; Takuya Matsumoto; Iwane Shiozaki; Shigeki Takikawa |
| A liquid crystalline polymer film useful as a high functional optical element is provided. Said liquid crystalline polymer film is formed on a substrate and having at least a tilt orientation fixed, and said tilt orientation is such that the angle between a director of said liquid crystalline polymer and a flat surface of said substrate is in the range of 5 to 85 degrees in terms of an average value. | ||||||
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