| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Retardation compensator and single-panel type color liquid crystal projector | US10745999 | 2003-12-29 | US20040141122A1 | 2004-07-22 | Kenichi Nakagawa |
| A form birefringence to compensate the phase retardation caused by a liquid crystal device has a retardation compensation film that is composed of alternately deposited high and low refractive index layers. The retardation compensation film is provided in at least one of the incident side and the emanation side of the liquid crystal device. The birefringence value nulln and the total thickness d of the retardation compensation film are adjusted such that the retardation of the retardation compensation film agrees with the retardation of the liquid crystal device at least at one wavelength in the visible band. | ||||||
| 142 | Vertically aligned (VA) liquid crystal display device | US09097027 | 1998-06-12 | US06724452B1 | 2004-04-20 | Arihiro Takeda; Katsufumi Ohmuro; Yoshio Koike; Shingo Kataoka; Takahiro Sasaki; Takashi Sasabayashi; Hideaki Tsuda; Hideo Chida; Makoto Ohashi; Kenji Okamoto; Hisashi Yamaguchi; Minoru Otani; Makoto Morishige; Noriaki Furukawa; Tsuyoshi Kamada; Yoshinori Tanaka; Atuyuki Hoshino; Shougo Hayashi; Hideaki Takizawa; Takeshi Kinjou; Makoto Tachibanaki; Keiji Imoto; Tadashi Hasegawa; Hidefumi Yoshida; Hiroyasu Inoue; Yoji Taniguchi; Tetsuya Fujikawa; Satoshi Murata; Manabu Sawasaki; Tomonori Tanose; Siro Hirota; Masahiro Ikeda; Kunihiro Tashiro; Kouji Tsukao; Yasutoshi Tasaka; Takatoshi Mayama; Seiji Tanuma; Yohei Nakanishi |
| A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage is applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied. | ||||||
| 143 | Vertically-alligned (VA) liquid crystal display device | US09663677 | 2000-09-18 | US06661488B1 | 2003-12-09 | Arihiro Takeda; Katsufumi Ohmuro; Yoshio Koike; Shingo Kataoka; Takahiro Sasaki; Takashi Sasabayashi; Hideaki Tsuda; Hideo Chida; Makoto Ohashi; Kenji Okamoto; Hisashi Yamaguchi; Minoru Otani; Makoto Morishige; Noriaki Furukawa; Tsuyoshi Kamada; Yoshinori Tanaka; Atuyuki Hoshino; Shougo Hayashi; Hideaki Takizawa; Takeshi Kinjou; Makoto Tachibanaki; Keiji Imoto; Tadashi Hasegawa; Hidefumi Yoshida; Hiroyasu Inoue; Yoji Taniguchi; Tetsuya Fujikawa; Satoshi Murata; Manabu Sawasaki; Tomonori Tanose; Siro Hirota; Masahiro Ikeda; Kunihiro Tashiro; Kouji Tsukao; Yasutoshi Tasaka; Takatoshi Mayama; Seiji Tanuma; Yohei Nakanishi |
| A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied. | ||||||
| 144 | Twisted nematic liquid crystal display device with improved viewing angle characteristics | US09330269 | 1999-06-11 | US06396553B1 | 2002-05-28 | Muneo Maruyama |
| A polarizing plate, a phase compensation film, a liquid crystal panel, a phase compensation film, and a polarizing plate are stacked on a planar light source in this order. A color filter substrate and an active matrix substrate are arranged parallel to each other in the liquid crystal panel. A transparent common electrode and a color filter are formed on a transparent glass substrate in the color filter substrate. Thin film transistors and transparent pixel electrodes are arranged in the form of a matrix on a transparent glass substrate in the active matrix substrate. The color filter substrate and the active matrix substrate are adhered to each other with a sealing agent. A TN liquid crystal layer including a TN liquid crystal having a twisted angle of substantially 90° is sealed between the color filter substrate and the active matrix substrate by the sealing agent. A chiral agent is added to the liquid crystal in the TN liquid crystal layer, and the helical pitch of the liquid crystal is 60 &mgr;m or more. | ||||||
| 145 | Process for preparing an optical retardation film | US09364128 | 1999-07-30 | US06262788B1 | 2001-07-17 | Keith Hanrahan; John Scott; Mark Goulding; Mark Andrew Verrall; David Coates; Nicolas Sharples; Jun Nakanowatari |
| The invention relates to a process for preparing an optical retardation film comprising at least one layer of an anisotropic polymer material, to a method of rubbing a substrate for the alignment of liquid crystal or mesogenic material that can be used in the above process, to an optical retardation film obtainable by the above process, to the use of such an optical retardation film in a liquid crystal display, and to a liquid crystal display device comprising a liquid crystal cell and such an optical retardation film. | ||||||
| 146 | Image projection system | US09486251 | 2000-02-24 | US06250762B1 | 2001-06-26 | Maarten Kuijper |
| The present invention relates to an image projection system (1) comprising an illumination system (3) and a modulation system comprising three image display panels (11, 13 and 15) of the relative type. The light beam coming from the illumination system (3) is color-separated and, after modulation by the image display panels, color-recombined by a color-separating and a color-recombining element (17). At least between the element (17) and the display panels (11, 13 and 15) is arranged a polarization-compensating element (31, 33, 35). | ||||||
| 147 | Liquid crystal display device having compensator with particular retardation in the inclined direction | US695985 | 1996-08-15 | US5699137A | 1997-12-16 | Keiko Kishimoto |
| It is an object of the invention to provide a liquid crystal display device capable of obtaining a wide viewing angle without coloration caused by a viewing angle. A liquid crystal display cell is disposed between a pair of polarizers, and between the liquid crystal display cell and the pair of polarizers, first optical compensation plates are disposed at the side of the liquid crystal display cell, and second optical compensation plates are disposed at the side of the polarizer. The first optical compensation plates have a refractive index anisotropy in the plane, and the refractive index thereof in the thickness direction is nearly equal to the refractive index of a minimum value in the plane, whereas the second optical compensation plates have no refractive index anisotropy in the plane, the refractive index in the thickness direction is greater than the refractive index in the plane, and a positive phase difference is expressed by inclination from the normal direction. By the optical compensation plates, the coloration of the display in the display plane of the liquid crystal display device and in the viewing angle direction inclined in a direction parallel to the display plane from the normal direction of the display plane can be compensated, so that a wide viewing angle of a high contrast is obtained. | ||||||
| 148 | 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. | ||||||
| 149 | VIEWING ANGLE CONTROL DEVICE AND VIEWING ANGLE CONTROLLABLE DISPLAY APPARATUS | US15730740 | 2017-10-12 | US20180113334A1 | 2018-04-26 | Chong-Yang Fang; Wen-Chun Wang |
| A viewing angle control device including at least one liquid crystal panel, at least one compensation film and polarizers is provided. Each of the at least one liquid crystal panel includes two transparent conductive layers and liquid crystal molecules. The polarizers include at least one first polarizer and a second polarizer. The at least one first polarizer is located between the at least one compensation film and the at least one liquid crystal panel. The second polarizer is located at a side of the at least one liquid crystal panel, the at least one compensation film and the at least one first polarizer. When there is no potential difference between the transparent conductive layers, an optical axis of each of the liquid crystal molecules is parallel or vertical to a transmission axis of the at least one first polarizer. A viewing angle controllable display apparatus is also provided. | ||||||
| 150 | Optical-compensation film, optical-compensation polarizing sheet and liquid crystal display | US14361830 | 2013-06-25 | US09513422B2 | 2016-12-06 | Ki Man Kim; Jaegeon You |
| An optical-compensation film, an optical-compensation polarizing sheet and a liquid crystal display are disclosed. The liquid crystal display comprises: a liquid crystal unit as well as a first polarizing sheet and a second polarizing sheet each provided at either side of the liquid crystal unit, in which absorption axes of the first and second polarizing sheets are perpendicular to each other; the liquid crystal unit comprises: a counter substrate and an array substrate as well as a liquid crystal layer lying between the two substrates, in which, the array substrate comprises a pixel electrode and a common electrode; the first polarizing sheet comprises: a first optical-compensation film, which is provided facing the liquid crystal unit; an absorption axis of the first polarizing sheet and an initial alignment direction of the liquid crystal in the liquid crystal layer are both perpendicular to a slow axis of the first optical-compensation film; the second polarizing sheet comprises: an isotropic protective film, which is provided proximate to a side of the liquid crystal unit where the array substrate is located. The liquid crystal display has improved contrast in an oblique plane and expanded viewing angles. | ||||||
| 151 | LIQUID CRYSTAL DISPLAY DEVICE | US14227903 | 2014-03-27 | US20140293198A1 | 2014-10-02 | Tatsuya IWASAKI; Ayako MURAMATSU; Hiroyuki KAIHOKO |
| A liquid crystal display includes: a first polarizer; a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules horizontally aligned to a face of a substrate; and a second polarizer. The liquid crystal display further includes a first optical compensation film disposed between the first polarizer and the liquid crystal cell, an absorption axis of the first polarizer, an optical axis of the first optical compensation film, and an optical axis of the liquid crystal layer being parallel to each other in a view of the liquid crystal cell in a direction orthogonal to the face of the substrate of the liquid crystal cell. The optical axis of the liquid crystal layer of the liquid crystal cell and the optical axis of the first optical compensation film have a tilt angle from the face of the substrate of the liquid crystal cell in a same direction. | ||||||
| 152 | Alignment layer and liquid crystal display having the same | US11981281 | 2007-10-30 | US08704985B2 | 2014-04-22 | Ki-Chul Shin |
| Disclosed are an alignment layer and a liquid crystal display having the same. The alignment layer comprises a polyimide compound having an azo group and exhibiting optical alignment characteristics and a discotic liquid crystal compound exhibiting optical anisotropy. The liquid crystal display comprises first and second substrates facing each other, liquid crystal aligned between the first and second substrates, and an alignment layer formed on at least one surface of the first and second substrates. The alignment layer is adjacent to the liquid crystal and has optical alignment characteristics and optical anisotropy. | ||||||
| 153 | Liquid crystal display device | US13074805 | 2011-03-29 | US08134671B2 | 2012-03-13 | Arihiro Takeda; Katsufumi Ohmuro; Yoshio Koike; Shingo Kataoka; Takahiro Sasaki; Takashi Sasabayashi; Hideaki Tsuda; Hideo Chida; Makoto Ohashi; Kenji Okamoto; Hisashi Yamaguchi; Minoru Otani; Makoto Morishige; Noriaki Furukawa; Tsuyoshi Kamada; Yoshinori Tanaka; Atuyuki Hoshino; Shougo Hayashi; Hideaki Takizawa; Takeshi Kinjou; Makoto Tachibanaki; Keiji Imoto; Tadashi Hasegawa; Hidefumi Yoshida; Hiroyasu Inoue; Yoji Taniguchi; Tetsuya Fujikawa; Satoshi Murata; Manabu Sawasaki; Tomonori Tanose; Siro Hirota; Masahiro Ikeda; Kunihiro Tashiro; Kouji Tsukao; Yasutoshi Tasaka; Takatoshi Mayama; Seiji Tanuma; Yohei Nakanishi |
| A liquid crystal display device including a pair of substrates sandwiching liquid crystal molecules, a plurality of gate bus lines, and a plurality of data bus lines, with each of the data bus lines extending to intersect the gate bus lines and bending in a zigzag manner. A plurality of pixels are formed in areas enclosed by the data and gate bus lines, with a plurality of pixel electrodes, each covering a substantial area of one of the pixels. A plurality of domain regulating structures for regulating orientation directions of the liquid crystal molecules and for forming multiple domains are formed in each of the pixels. At least one of the domain regulating structures bends along a first side edge of the pixel electrode and domains are divided in accordance with the bending of the domain regulating structure. | ||||||
| 154 | Twisted nematic xLCD contrast compensation with tilted-plate retarders | US12100024 | 2008-04-09 | US08072561B2 | 2011-12-06 | Kim Leong Tan; Karen Denise Hendrix |
| Contrast compensation for a liquid crystal display projection system including a light source, a first polarizer, a liquid crystal display panel, and a second polarizer is provided using a tilted compensating plate. The compensating plate includes a first birefringent element having an optic axis oriented at a first angle to the plate normal, where the first angle is greater than zero degrees (e.g., an A-plate or O-plate), and a second birefringent element having an optic axis oriented at a second angle to the plate normal, where the second angle is substantially equal to zero degrees (e.g., a C-plate). The compensating plate is tilted relative to a plane of the liquid crystal display panel. The tilted compensating plate has been shown to provide improved contrast compensation for twisted nematic liquid crystal displays. | ||||||
| 155 | Complex birefringent medium, polarizing plate, and liquid crystal device | US12300682 | 2007-06-01 | US07999893B2 | 2011-08-16 | Akira Sakai; Takayuki Natsume; Masahiro Hasegawa; Kazuhiko Tsuda; Nobuaki Yamada |
| The present invention provides a complex birefringent medium, which has the so-called inverse wavelength dispersibility, that is, a wavelength dispersibility capable of giving an optimum phase difference to a light of a wide visible wavelength range, has a wide viewing angle, can be produced by a convenient method and is excellent in a degree of adjusting freedom of inverse wavelength dispersibility and in mass productivity, a polarizing plate and a liquid crystal display device. The complex birefringent medium of the present invention is a complex birefringent medium having a structure in which a plurality of birefringent layers are laminated, wherein in the complex birefringent medium, a phase difference exhibits inverse wavelength dispersibility as the whole of the complex birefringent medium, and wherein when a principal refractive index having the maximum absolute value of a difference from an average value of three principal refractive indexes at a wavelength λ (nm) is designated as a first principal refractive index n1(λ), a normal line of the birefringent layer and a principal axis corresponding to the first principal refractive index n1(550) of the birefringent layer are in the same plane. | ||||||
| 156 | Light-transmissive film, method for manufacturing the same, and display apparatus | US12052126 | 2008-03-20 | US07980712B2 | 2011-07-19 | Akihiro Horii; Kei Obata; Mitsunari Hoshi; Noriyuki Hirai; Hiroshi Mizuno |
| A light-transmissive film for use in display devices is provided. The light-transmissive film includes a plurality of first protrusions formed on one surface and extending in a predetermined direction of the one surface, and a plurality of second protrusions formed on an opposite surface to the one surface, extending in one direction of the opposite surface, arranged parallel to the one direction, and arranged parallel to a direction intersecting the one direction. At least one of the first and second protrusions has a refractive index anisotropy in a plane. | ||||||
| 157 | Vertically-alligned (VA) liquid crystal display device | US12431412 | 2009-04-28 | US07821603B2 | 2010-10-26 | Arihiro Takeda; Katsufumi Ohmuro; Yoshio Koike; Shingo Kataoka; Takahiro Sasaki; Takashi Sasabayashi; Hideaki Tsuda; Hideo Chida; Makoto Ohashi; Kenji Okamoto; Hisashi Yamaguchi; Minoru Otani; Makoto Morishige; Noriaki Furukawa; Tsuyoshi Kamada; Yoshinori Tanaka; Atuyuki Hoshino; Shougo Hayashi; Hideaki Takizawa; Takeshi Kinjou; Makoto Tachibanaki; Keiji Imoto; Tadashi Hasegawa; Hidefumi Yoshida; Hiroyasu Inoue; Yoji Taniguchi; Tetsuya Fujikawa; Satoshi Murata; Manabu Sawasaki; Tomonori Tanose; Siro Hirota; Masahiro Ikeda; Kunihiro Tashiro; Kouji Tsukao; Yasutoshi Tasaka; Takatoshi Mayama; Seiji Tanuma; Yohei Nakanishi |
| A vertical alignment type liquid crystal display device including a plurality of pixels, which further includes a first substrate and a second substrate and a liquid crystal layer between the first substrate and the second substrate. The first substrate and the second substrate include alignment control structures which extend linearly, and when viewed in a direction vertical to the first substrate, in a pixel, the alignment control structure of the first substrate and the alignment control structures of the second substrate are arranged alternately. The alignment control structure of the first substrate includes first and second linear portions, and distances between the first and second linear portions and an adjacent alignment control structure of the second substrate are different from each other. Additionally, each of the first and second linear portions and the alignment control structures of the second substrate are arranged in parallel. | ||||||
| 158 | BIAXIAL BIREFRINGENT COMPONENT, LIQUID CRYSTAL PROJECTOR, AND METHOD FOR MANUFACTURING BIAXIAL BIREFRINGENT COMPONENT | US12679240 | 2008-09-18 | US20100231835A1 | 2010-09-16 | Kenichi Nakagawa; Hiroki Takahashi; Taro Hashizume |
| A phase compensator having a biaxial birefringent component (40) is fabricated by oblique deposition of an inorganic material on a base plate (69). A polar angle of an evaporation path of the inorganic material is controlled in a predetermined angular range to a surface normal of the base plate (69). In the oblique deposition process, the base plate (69) is oscillated in a horizontal direction. The phase compensator is arranged such that its slow axis (L4) is perpendicular to a slow axis (L3) of tilt components (24a, 24b) in a liquid crystal panel (20), and that an index ellipsoid (41) is tilted in an opposite direction to a tilt direction of the tilt components (24a, 24b). | ||||||
| 159 | Liquid crystal projector, liquid crystal device and substrate for liquid crystal device | US12010431 | 2008-01-24 | US07773178B2 | 2010-08-10 | Kenichi Nakagawa |
| Red incident light is reflected on a mirror (19) and linearly polarized by a polarizer (26R). Linearly polarized incident light enters a transmissive liquid crystal device (11R), in which oblique incident light is changed into elliptically polarized light. A retardation compensator (27R) between the liquid crystal device (11R) and an analyzer (28R) has an inorganic form birefringence layer. The retardation compensator (27R) yields birefringence effect to change elliptical polarized light into linearly polarized light. Linearly polarized light from the retardation compensator (27R) can pass the analyzer (28R) without decreasing intensity, and enters a color recombining prism (24). The liquid crystal device (11R) may have the inorganic form birefringence layer. Retardation in green and blue light is also compensated in the same manner. Red, green and blue image light, mixed in the color recombining prism (24), is projected onto a screen 3 by a projection lens system (25). | ||||||
| 160 | Phase difference compensating element, liquid crystal device, and projection type display apparatus | US11995358 | 2006-07-07 | US07760275B2 | 2010-07-20 | Takamichi Fujii |
| A phase difference compensation element comprises at least one birefringent laminate, which contains a light transmissive base material and “a” number, where a≧2, of inorganic oblique incidence vacuum deposited films varying in direction of oblique evaporation and having been laminated on a surface of the light transmissive base material. The birefringent laminate satisfies the conditions represented by Formula (i) and Formula (ii): Re(1) | ||||||
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