| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Single-polarizer, normally black reflective STN display | US09855474 | 2001-05-15 | US20020044252A1 | 2002-04-18 | Martin Bosma |
| The invention pertains to a single-polarizer, normally black reflective display comprising an STN-LCD cell, a reflector, one polarizer, and a twisted retardation layer, characterized in that the sign of the twist angle of the STN-LCD cell (TSTN) is opposite to the twist angle of the twisted retardation layer (TRL) and that nullTSTN-TRLnull is 30null to 90null, and nullRSTN-RRLnull is 10-700 nm, wherein RSTN and RRL stand for the retardation values of the STN-LCD cell and the retardation layer, respectively, and that the difference between the dispersion of the retardation layer and the STN-LCD cell is more than 5%, wherein the dispersion is defined as the ratio of the retardation value at nullnull436 nm to the retardation value at nullnull668 nm. | ||||||
| 62 | Transflective liquid crystal display device | US09755097 | 2001-01-08 | US20010020990A1 | 2001-09-13 | Jong-Weon Moon |
| A transflective liquid crystal display device that can selectively be used in the transmissive mode or the reflective mode. The transflective liquid crystal panel includes a reflective electrode having a transparent portion, a CLC color filter and a CLC polarizer. Light from a backlight device can pass through the transparent portion of the reflective electrode and into the liquid crystal. Moreover, light from the backlight device that is reflected by the reflective electrode can also pass through the transparent portion and into the liquid crystal without being absorbed by the CLC polarizer. The brightness of the transflective LCD device is thus improved. | ||||||
| 63 | Liquid crystal display with edge-lit backlight which uses ambient light injected between reflector and cholesteric polarizer | US871616 | 1997-06-09 | US6160595A | 2000-12-12 | Keiko Kishimoto |
| An object of the invention is to obtain brighter display in a liquid crystal display apparatus. Light of all the wavelengths in the visible range is converted into circularly polarized light by a first polarization condition converting member, converted into linearly polarized light by a second polarization condition converting member and is modulated by a liquid crystal display device. Then, transmission and block of the light is controlled by a polarizer. Specifically, one of the dextrorotatory circularly polarized light and the levorotatory circularly polarized light is reflected by a spectral member included in the first polarization condition converting member, converted into the other circularly polarized light by a reflecting member included in the first polarization condition converting member and supplied again to the spectral member. The other circularly polarized light is transmitted by the spectral member. Thus, by converting light of all the wavelengths in the visible range into circularly polarized light and then converting the circularly polarized light into linearly polarized light, in principle, 100% of the light is incident on a liquid crystal display device, so that brighter display is achieved. | ||||||
| 64 | Temperature matched retardation layer | US099507 | 1998-06-18 | US6088077A | 2000-07-11 | Paulus Pieter De Wit; Stephen James Picken; Andre Steenbergen; Martin Bosma |
| The invention is directed to a liquid crystalline display comprising a display cell containing liquid crystalline material and a retardation layer. The retardation layer comprises a, preferably slightly cross-linked, high-molecular weight material layer and a substrate, wherein the high-molecular weight material has a nematic phase above its Tg and a dynamic viscosity at the working temperature of at least 100 Pa.s. The difference of the Tc of the high-molecular weight material and the Tc of the low-molecular weight material of the display cell (TC.sub.cell) is in the range of -30.degree. C. to +30.degree. C., preferably in the range of -20.degree. C. to +20.degree. C., and more preferably in the range of -10.degree. C. to +10.degree. C.; and the Tg of the high-molecular weight liquid crystalline material is lower than 50.degree. C. It was found that if high-molecular weight material is used with a Tc comparable with that of the, preferably low-molecular weight, liquid crystalline material of the active cell, the temperature dependency of the retardation value of the retardation layer is comparable with that of the active cell. Thus, the retardation value of the retardation layer is comparable with that of the active cell within the temperature range in which displays are used. It was further found that by cross-linking of the high molecular weight liquid crystalline material, the retardation layers according to the invention become less susceptible to pinhole forming and unwanted variation of the twist, and have improved mechanical stability. | ||||||
| 65 | Liquid crystal displays containing tilted optical axis compensation films having a negative birefringence | US929237 | 1997-09-04 | US5940155A | 1999-08-17 | Kei-Hsiung Yang; Kun-Wei Lin; Han-Ping David Shieh |
| An optical compensation arrangement using tilted-optical-axis compensation films with negative birefringence for low-twist-angle nematic liquid crystal cells to achieve better viewing angle characteristics than a regular 90.degree.-twist TN cell, with similar high contrast ratio and brightness as the regular TN cell near normal incidence at a comparable operating voltage. | ||||||
| 66 | Liquid crystal device and electronic equipment using the same | US666284 | 1996-07-08 | US5838408A | 1998-11-17 | Yasuyuki Inoue; Chiyoaki Iijima; Toshihiko Tsuchihashi |
| This invention refers to a liquid crystal device that provides a color display by utilizing a colorization phenomenon caused by double refraction birefringence of a liquid crystal, wherein the color tone that appears when no voltage or a non-selected voltage is applied is white or a non-color close thereto, and at least two colors are displayed when a voltage is applied, and electronic equipment in which this liquid crystal device is installed. A liquid crystal device which is capable of displaying colors without using color filters and which is also capable of displaying white or a non-color close thereto is implemented by optimizing the value of .DELTA.n.multidot.d of the liquid crystal and the relationship between the value of .DELTA.n.multidot.d of the liquid crystal and the value of retardation (R) of an optically anisotropic substance such as a retardation film. In other words, the liquid crystal cell and the optically anisotropic substance should be such as to satisfy the following relationships: .DELTA.n.multidot.d.gtoreq.1(.mu.m) 15.5.times..alpha..sup.2 -40.times..alpha.+25.1.ltoreq.R-.DELTA.n.multidot.d.ltoreq.15.5.times..alpha..sup.2 -40.times..alpha.+25.8(.mu.m) | ||||||
| 67 | Compensator for a liquid crystal display | US528241 | 1995-08-14 | US5599478A | 1997-02-04 | Takuya Matumoto; Tadahiro Kaminade; Nishimura Suzushi; Shigeki Takigawa |
| According to the present invention there is provided a compensator for a liquid crystal display superior in the color compensating performance, capable of making color compensation of a high-speed STN-LCD and capable of freely changing the value of wavelength dispersion. The compensator is obtained by using a liquid crystalline polyester which contains 4-hydroxycinnamic acid units and catechol units as constituent units. | ||||||
| 68 | Compensator for liquid crystal display | US149002 | 1993-11-08 | US5326496A | 1994-07-05 | Shigeki Iida; Takehiro Toyooka; Yasuyuki Takiguchi; Takamichi Enomoto |
| A compensator for liquid crystal display which is composed of:a light transmitting base;an alignment layer formed on said base; anda film formed on said alignment layer by a liquid crystalline polymer which exhibits a twisted nematic orientation in the state of liquid crystal and which assumes the state of glass at a temperature below the liquid crystal transition point thereof. | ||||||
| 69 | Liquid crystal display device and method of fabrication | US52816 | 1987-05-19 | US4844569A | 1989-07-04 | Hiroshi Wada; Shinji Wada; Chiyoaki Iijima |
| A liquid crystal display device and method of fabrication thereof includes a first twisted nematic liquid crystal cell and an optically anisotropic material sandwiched between two polarizers. A second twisted nematic liquid crystal cell or polymer film serves as the optically anisotropic material. The optically anisotropic material may be disposed on one or both sides of the first twisted nematic liquid crystal. The optically anisotropic material compensates for the elliptical polarization of the light passing through the liquid crystal cell so that the device transmits while light in the OFF state and appears black in the ON state. | ||||||
| 70 | Two-layer liquid crystal display panel | US206532 | 1980-11-13 | US4436379A | 1984-03-13 | Fumiaki Funada; Syuichi Kozaki; Masataka Matsuura; Tomio Wada |
| A twisted nematic liquid crystal display cell has two layers each containing a liquid crystal material. It is selected that the respective values of .DELTA.n.d, where .DELTA.n is the double refractive index of a liquid crystal layer and d is the thickness of a liquid crystal layer, deviate from each other, in connection with the two liquid crystal layers by about 5% to about 30%, more preferably, about 10% to about 20%. This leads to the advantage that coloration of transmission light owing to interference by double refraction is prevented. | ||||||
| 71 | Polymerizable liquid crystal compound, polymerizable liquid crystal composition, and polymer thereof | US12659693 | 2010-03-17 | US09057018B2 | 2015-06-16 | Yoshiharu Hirai; Ryushi Shundo; Takashi Kato |
| A compound represented by the formula (1) is provided. A polymerizable liquid crystal composition containing the compound can be controlled in birefringence and is excellent in stability of a liquid crystal phase. An anisotropic polymer excellent in uniformity of alignment is obtained by coating and polymerizing the composition on a supporting substrate. In the formula (1), at least one of Ra represents a polymerizable group, A represents a ring group, Y and Z each represent a single bond or alkylene; in which —CH2— in the alkylene may be replaced by another group, and m and n each represent an integer of from 0 to 5. | ||||||
| 72 | O-plate having excellent durability and itegrated polarizing plate comprising the same | US12224872 | 2007-11-15 | US08574689B2 | 2013-11-05 | 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. | ||||||
| 73 | Polymerizable liquid crystal compound, polymerizable liquid crystal composition, and polymer thereof | US12659693 | 2010-03-17 | US20100304148A1 | 2010-12-02 | Yoshiharu Hirai; Ryushi Shundo; Takashi Kato |
| A compound represented by the formula (1) is provided. A polymerizable liquid crystal composition containing the compound can be controlled in birefringence and is excellent in stability of a liquid crystal phase. An anisotropic polymer excellent in uniformity of alignment is obtained by coating and polymerizing the composition on a supporting substrate. In the formula (1), at least one of Ra represents a polymerizable group, A represents a ring group, Y and Z each represent a single bond or alkylene; in which —CH2— in the alkylene may be replaced by another group, and m and n each represent an integer of from 0 to 5. | ||||||
| 74 | NEGATIVE RETARDATION FILM | US11758223 | 2007-06-05 | US20070242190A1 | 2007-10-18 | Karl SKJONNEMAND; Owain Parri; Donald 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. | ||||||
| 75 | Compensator comprising a positive and negative birefringent retardation film | US10440418 | 2003-05-19 | US07283188B2 | 2007-10-16 | Jeong Su Yu; Sergey Vasilyevich Belyaev; Byoung Kun Jeon; Karl Skjonnemand; Tara Perrett; Owain Parri |
| The invention relates to a compensator comprising a positive and a negative birefringent retardation film, its use in displays and optical elements, and to displays comprising such a compensator. | ||||||
| 76 | 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 | US20070146597A1 | 2007-06-28 | 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. | ||||||
| 77 | Optical compensation plate and deflecting plate using the same | US10502296 | 2003-01-22 | US07235283B2 | 2007-06-26 | Junichi Adachi; Shuuji Yano; Takashi Yamaoka; Masayuki Kawai; Kanako Wasai; Nao Murakami |
| The present invention provides an optical compensation plate having an optical compensation layer in which cracks occurring due to an applied pressure is suppressed. By applying a curable adhesive agent onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and the constituent material thereof is preferably a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer. | ||||||
| 78 | Liquid crystal on silicon (LCOS) microdisplay with retarder that reduces light beam polarization changes | US10955753 | 2004-09-30 | US20060066805A1 | 2006-03-30 | Anders Grunnet-Jepsen; Chanda Walker; Roland Morley |
| According to embodiments of the present invention, a retarder for a liquid crystal on silicon microdisplay cell may include a twisted nematic cell sandwiched between index of refraction matching layers, isotropic material (for example, glass) disposed on the top and bottom index matching layers and antireflective material disposed on the top and bottom isotropic layers. In one embodiment, the retarder includes a fast axis oriented substantially ninety degrees out of phase relative to a fast axis of the residual retardance of the liquid crystal on silicon microdisplay cell. | ||||||
| 79 | Optical compensation plate and deflecting plate using the same | US10502296 | 2003-01-22 | US20050122586A1 | 2005-06-09 | Junichi Adachi; Shuuji Yano; Takashi Yamaoka; Masayuki Kawai; Kanako Wasai; Nao Murakami |
| The present invention provides an optical compensation plate having an optical compensation layer in which cracks occurring due to an applied pressure is suppressed. By applying a curable adhesive agent onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and the constituent material thereof is preferably a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer. | ||||||
| 80 | Optical compensator and liquid crystal display II | US10088358 | 2000-09-13 | US06903789B1 | 2005-06-07 | Tara Cutler; Owain Llyr Parri; Mark Verrall; Peter Le Masurier |
| The invention that relates to an optical compensator for liquid crystal displays comprising: at least one O plate retarder; at least one planar A plate reader; at least one negative C plate retarder; and further relates to a liquid crystal display comprising such a compensator. | ||||||
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