| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Optical stack for switchable directional display | US16186818 | 2018-11-12 | US20190196235A1 | 2019-06-27 | Michael G. Robinson; Graham J. Woodgate; Robert A. Ramsey; Jonathan Harrold |
| A privacy display comprises a spatial light modulator and a compensated switchable liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial light modulator. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction over a wide polar field. In a wide angle mode of operation, the switchable liquid crystal retardance is adjusted so that off-axis luminance is substantially unmodified. | ||||||
| 102 | Method for producing polarizing film | US15515885 | 2015-09-29 | US10088705B2 | 2018-10-02 | Emi Miyai; Kentaro Ikeshima; Toshiki Omine; Satoshi Mita; Atsushi Kishi; Tomonori Ueno |
| A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 μm or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 μm or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor. | ||||||
| 103 | LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY | US15076943 | 2016-03-22 | US20160291373A1 | 2016-10-06 | Toshiyuki Iida |
| The liquid crystal panel includes a liquid crystal cell, a first polarizer on one side of the liquid crystal cell, a second polarizer on the other side of the liquid crystal cell, a first optically anisotropic element having a positive refractive index anisotropy disposed between the liquid crystal cell and the first polarizer, and a second optically anisotropic element having a negative refractive index anisotropy disposed between the first optically anisotropic element and the liquid crystal cell. Liquid crystal molecule in the liquid crystal cell is homogeneously aligned and have a pretilt angle of 0.5° or less in non-electric-field state. At least one of the first optically anisotropic element and the second optically anisotropic element has a ratio R450/R550 of 1.1 or more, where R550 is a retardation at a wavelength of 550 nm and R450 is a retardation at a wavelength of 450 nm. | ||||||
| 104 | Optical film, polarizing plate, liquid crystal display, and method of manufacturing optical film | US14140910 | 2013-12-26 | US09229142B2 | 2016-01-05 | Hiroshi Sato; Yukito Saitoh; Mitsuyoshi Ichihashi |
| Provided is an optical film which is resistant to repelling, bright dots, irregularity, and the use of such an optical film in a liquid crystal display leads to high front contrast, reduced grayscale inversion, and a reduced difference between a front image and an oblique image in grayscale reproducibility and color. The optical film including a first optically anisotropic layer; and a second optically anisotropic layer on the first optically anisotropic layer, wherein the first optically anisotropic layer is a layer of liquid crystal compounds aligned and fixed by polymerization, and the surface tilt angle of molecules of the liquid crystal compound is in a range of 5° to 80° at a site in contact with the second optically anisotropic layer. | ||||||
| 105 | LIQUID CRYSTAL DISPLAY DEVICE | US14717154 | 2015-05-20 | US20150378200A1 | 2015-12-31 | Tzu-Chin SU |
| A liquid crystal display device is disclosed, which comprises: a first polarizer; a second polarizer corresponding to the first polarizer; a liquid crystal panel disposed between the first polarizer and the second polarizer, the liquid crystal panel comprises a first liquid crystal layer having a first alignment direction; and a compensation member disposed between the first polarizer and the liquid crystal panel or between the second polarizer and the liquid crystal panel, the compensation member is attached on the liquid crystal panel, and the compensation member comprises a second liquid crystal layer having a second alignment direction; wherein the first and second alignment directions are substantially the same and the dielectric anisotropies of the first and second liquid crystals are the opposite. | ||||||
| 106 | Method for ensuring a minimal amplitude modulation in phase-modulating light modulators | US12525451 | 2008-01-29 | US08928825B2 | 2015-01-06 | Norbert Leister |
| The invention relates to a phase-modulating light modulator and to a method for ensuring a minimal amplitude modulation in phase-modulating light modulators, wherein the phase-modulating light modulator comprises an optically active layer with at least one optically active volume region and with boundary surfaces, wherein the optically active layer is assigned at least one transparent compensation volume region which comprises at least one birefringent material with fixed refractive index ellipsoids, and has a polarizer arranged on the output side. An object is to achieve a reduced angle-dependence of the averaged amplitude modulation in the observation angle region. The object is achieved by optimizing the orientation with respect to one another of the refractive index ellipsoids of the optically active layer and of the compensation layers in a simulative manner. | ||||||
| 107 | Alignment layer and liquid crystal display having the same | US14206185 | 2014-03-12 | US20140192306A1 | 2014-07-10 | 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. | ||||||
| 108 | Liquid crystal display device having retardation film formed of liquid crystalline polyimide having photoreactive group | US13384339 | 2010-06-30 | US08730435B2 | 2014-05-20 | Kazuhiko Saigusa; Norio Tamura |
| In a liquid crystal display device having a plurality of retardation films for alleviating a deterioration in display quality depending on a viewing angle direction, and a driving liquid crystal layer selected from the group consisting of a driving liquid crystal layer typified by a VA mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned perpendicular to a substrate when no electric field is applied, a driving liquid crystal layer typified by an IPS mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned parallel to the substrate when no electric field is applied, and a driving liquid crystal layer that shows optical isotropy when no voltage is applied, a retardation film of a positive A-plate formed of a liquid crystalline polyimide having a photoreactive group is used as at least one layer of the plurality of retardation films. | ||||||
| 109 | Biaxial birefringent component, liquid crystal projector, and method for manufacturing biaxial birefringent component | US12679240 | 2008-09-18 | US08605241B2 | 2013-12-10 | 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). | ||||||
| 110 | Liquid crystal display device | US13358028 | 2012-01-25 | US08553188B2 | 2013-10-08 | 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 comprising a liquid crystal layer including liquid crystal molecules provided between a first substrate and a second substrate; pixels forming a display area; electrodes for applying a voltage across the liquid crystal layer within each of the pixels; a plurality of domain regulating structures for dividing orientations of the liquid crystal molecules and forming multiple domains within each of the pixels, when a predetermined voltage is applied across the liquid crystal layer within each of the pixels. The device also includes a structure which is formed in an outer area located next to the display area, but that does not overlap the display area, and is substantially the same as at least one of the plurality of domain regulating structures. | ||||||
| 111 | Image display apparatus and optical compensation device | US12395990 | 2009-03-02 | US08264647B2 | 2012-09-11 | Ryoko Horikoshi |
| An image display apparatus includes a liquid crystal panel having a liquid crystal layer disposed between a pair of substrates, and an optical compensation plate pair including a first optical compensation plate and a second optical compensation plate, the first optical compensation plate being formed of a negative uniaxial crystal and the second optical compensation plate being formed of a positive uniaxial crystal. The optical compensation plate pair is configured such that an optical phase difference caused by a difference in thickness between the first optical compensation plate and the second optical compensation plate cancels an optical phase difference generated by the liquid crystal panel. | ||||||
| 112 | Vertically-aligned (VA) liquid crystal display device | US12007982 | 2008-01-17 | USRE43123E1 | 2012-01-24 | Takashi Sasabayashi; Arihiro Takeda; Katsufumi Ohmuro; Yoshio Koike; Shingo Kataoka; Takahiro Sasaki; Kenji Okamoto; Tsuyoshi Kamada; Shougo Hayashi; Hideaki Takizawa; Keiji Imoto; Hidefumi Yoshida; Hiroyasu Inoue; Yoji Taniguchi; Satoshi Murata |
| A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. 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 to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied. | ||||||
| 113 | VERTICALLY-ALLIGNED (VA) LIQUID CRYSTAL DISPLAY DEVICE | US13074805 | 2011-03-29 | US20110176098A1 | 2011-07-21 | 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. | ||||||
| 114 | Vertically-aligned (VA) liquid crystal display device | US12070524 | 2008-02-19 | US07965363B2 | 2011-06-21 | 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 common electrode on a first substrate, a pixel electrode on a second substrate, and a liquid crystal layer between the first and second substrates. The device also include first and second alignment control structures formed, respectively, on the first and second substrates, for regulating azimuths of orientations of the liquid crystal when a voltage is applied thereto. The first and second alignment control structures each include a first line portion (extending in a first direction) and a second line portion (extending in a second direction, which is different from the first direction). The pixel electrode includes an edge extending in a direction different from both the first and second directions. | ||||||
| 115 | Retardation compensation element, liquid crystal display device, and liquid crystal projector | US11994798 | 2006-07-03 | US07764343B2 | 2010-07-27 | Kenichi Nakagawa |
| A retardation compensation element (32, 32a) has a first optical anisotropic layer (42) that functions as a negative C-plate, and a second and a third optical anisotropic layers (43, 44) that function as positive O-plates. VA mode liquid crystal molecules (37) tilt at an azimuth angle of 45 degrees and a polar angle of 5 degrees when no voltage is applied thereto. The second and third optical anisotropic layers have optical axes respectively at an angle of −105 degrees and +105 degrees from the tilt direction of the liquid crystal molecule. The first optical anisotropic layer (42) compensates the retardation of light that enters a liquid crystal layer (38) at an oblique angle while the second and third optical anisotropic layers (43, 44) compensate the retardation of light that enters the liquid crystal layer at a right angle. | ||||||
| 116 | Liquid crystal projector | US11571368 | 2005-06-13 | US07659946B2 | 2010-02-09 | Yasuhiro Shirasaka; Hitoshi Inukai; Tomoya Yano |
| Disclosed is a transmissive liquid crystal projector carrying a vertical alignment liquid crystal device. The liquid crystal projector includes a liquid crystal panel (25), on the light incident side and on the light radiating side of which a light incident side polarizing plate (24) and a light radiating side light polarizing plate (26) are arranged, respectively. A first polarized light component in a light beam collected by an illuminating optical system is transmitted through the light incident side polarizing plate (24) and routed to the liquid crystal panel (25). An optical anisotropic device (45), tilted by a preset angle correlated with the direction of alignment of liquid crystal molecules in the liquid crystal panel (25), that is, a pre-tilt angle, is arranged between the light incident side polarizing plate (24) and the liquid crystal panel (25) or between the light radiating side light polarizing plate (26) and the liquid crystal panel (25). By so doing, a high contrast ratio may be maintained, while transmittance of the liquid crystal panel may be improved. | ||||||
| 117 | LIQUID CRYSTAL DISPLAY DEVICE | US12366426 | 2009-02-05 | US20090147193A1 | 2009-06-11 | Tatsuo Uchida; Takahiro Ishinabe; Mitsuru Kano; Mitsuo Oizumi |
| A liquid crystal display device includes: a liquid crystal panel including a pair of substrates being disposed so as to oppose to each other and having electrodes and alignment films formed respectively on the opposing surfaces thereof, and liquid crystal layer in which nematic liquid crystal encapsulated between the pair of substrates is aligned in the horizontal direction to be at substantially 0° in twist angle by giving a pretilt in a predetermined direction by the alignment film, a polarizing plate(s) being arranged on the front side and back side of the liquid crystal panel and being set in direction of polarization to provide a black level when a drive voltage to be applied between the electrodes is brought into an OFF state, and optical compensating means disposed between the polarizing plate(s) and the liquid crystal panel for performing optical compensation for the liquid crystal layer. | ||||||
| 118 | POLARIZING PLATE WITH AN OPTICAL COMPENSATION LAYER, METHOD OF PRODUCING THE SAME, AND LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY APPARATUS, AND IMAGE DISPLAY APPARATUS, USING THE POLARIZING PLATE WITH AN OPTICAL COMPENSATION LAYER | US11995402 | 2006-07-05 | US20090128758A1 | 2009-05-21 | Takuya Mori; Yoshitsugu Kitamura; Mariko Hirai; Naoki Takahashi |
| There is provided a polarizing plate with optical compensation layers that contributes to reduction in thickness and has excellent heat resistance and moisture resistance. A polarizing plate with optical compensation layers according to an embodiment of the present invention includes: a polarizer; a first optical compensation layer; a second optical compensation layer; and a third optical compensation layer, in this order. The first optical compensation layer has a refractive index profile of nx>ny=nz, and an in-plane retardation Re1 of 200 to 300 nm; the second optical compensation layer has a refractive index profile of nx>ny=nz, and an in-plane retardation Re2 of 80 to 170 nm; and the third optical compensation layer is formed of a material exhibiting an optical negative uniaxial property, and the material is aligned so as to be inclined. | ||||||
| 119 | COMPLEX BIREFRINGENT MEDIUM, POLARIZING AGENT, AND LIQUID CRYSTAL DEVICE | US12300682 | 2007-06-01 | US20090096970A1 | 2009-04-16 | 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. | ||||||
| 120 | Retardation compensator and single-panel type color liquid crystal projector | US10745999 | 2003-12-29 | US07468769B2 | 2008-12-23 | 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 Δn 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. | ||||||
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