Color Patents (Class 349/97)
  • Publication number: 20130002999
    Abstract: A polarizing element includes a plurality of first needle-shaped particles that have transmittance for first polarized light, which is in a first polarization state, that is different from transmittance for second polarized light, which is in a second polarization state different from the first polarization state, in a first wavelength region and a plurality of second needle-shaped particles that have transmittance for the first polarized light that is different from transmittance for the second polarized light, in a second wavelength region different from the first wavelength region.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 3, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yoshitomo Kumai
  • Patent number: 8345182
    Abstract: A liquid crystal display device including lenticular lenses and color separation filters, associated with a subpixel row direction, on the backlight side with respect to lenticular lenses. In a RGW row, a color separation filter reflecting B wavelengths is arranged, and in a GBW row, a color separation filter reflecting R wavelengths is arranged. Together with collecting light in transmissive aperture parts with lenticular lenses and improving the transmitted quantity of light, the light reflected by color separation filters is returned to the backlight and re-utilized.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: January 1, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tatsuya Sugita, Masaya Adachi, Shoichi Hirota
  • Patent number: 8319915
    Abstract: The present invention relates to a liquid crystal on silicon imager. The imager includes a backplane substrate, a reflective polarization electrode array, a planar liquid crystal cell, a transparent conductive film and a transparent plate. The reflective polarization electrode array is placed onto the backplane substrate, consists of a plurality of reflective polarization electrodes, and a pattern of each of the reflective polarization electrodes is configured in a planar arrangement having regularly spaced and electrically isolated gaps in parallel to each other. The planar liquid crystal cell is placed above the reflective polarization electrode array. The transparent conductive film is placed above the planar liquid crystal cell. The transparent plate is placed on the transparent conductive film and facing incident light.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: November 27, 2012
    Assignee: Shanghai Lexvu Opto Microelectronics Technology Co., Ltd.
    Inventor: Herb He Huang
  • Publication number: 20120287380
    Abstract: Disclosed is a color filter substrate for a transflective liquid crystal display device, in which a light shielding layer is arranged at a periphery of an effective display region on a transparent substrate, and color pixels of a plurality of colors including green pixels, a spacer, and a first retardation layer are formed in the effective display region, wherein a recess is formed in each of the color pixels, the first retardation layer is formed in the recess, and the first retardation layer has a function for 90 degree polarization rotation of incident light, which has been converted to linearly polarized light, in one passage of the incident light back and forth in a thickness direction of the first retardation layer.
    Type: Application
    Filed: July 25, 2012
    Publication date: November 15, 2012
    Applicant: TOPPAN PRINTING CO. LTD.
    Inventors: Hidesato HAGIWARA, Mie Shimizu, Kenzo Fukuyoshi, Takao Taguchi
  • Patent number: 8305502
    Abstract: A beam combiner for combining a plurality of light beams onto an optical path, comprising: a first dichroic element having a dichroic coating that is disposed to transmit light of a first wavelength band along the optical path and to reflect light of a second wavelength band onto the optical path, and a second dichroic element having a dichroic coating that is disposed to transmit the light of the first and second wavelength bands along the optical path and to reflect light of a third wavelength band onto the optical path. The beam combiner further includes a phase difference compensation multilayer thin-film stack that provides at least one reflectance edge transition that lies outside any of the first, second, and third wavelength bands and which provides compensation for an accumulated phase difference for polarization states of the transiting in at least one of the first, second, and third wavelength bands.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: November 6, 2012
    Assignee: Eastman Kodak Company
    Inventors: Barry D. Silverstein, Andrew F. Kurtz, Jennifer D. Kruschwitz
  • Patent number: 8300183
    Abstract: The present invention relates to a liquid crystal display, more specifically, to a single layer reflective full color cholesteric display employing full spectrum circularly polarization. The display has not only zero-field long time memory but also paper-like super high brightness and contrast.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: October 30, 2012
    Assignee: MacroDisplay Inc.
    Inventor: Yao-Dong Ma
  • Patent number: 8294848
    Abstract: A liquid crystal display includes, among others, a light diffusion layer comprising a color conversion media layer and a non-conversion layer arranged on the second substrate and a backlight assembly to supply light to the first substrate and the second substrate. The backlight assembly supplies various wavelengths of lights, including blue light or UV ray. The blue rights through the liquid crystal layer enters the color conversion media layers and may generates red lights and green lights. In this case, blue lights go through non-conversion layer and diffuse and scatter out blue lights. The UV rays through the liquid crystal layer enters the color conversion media layers and may generates red light, green lights and blue lights.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: October 23, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Don-Chan Cho, Jae-Byung Park, Jin-Seob Byun, Hae-Il Park
  • Publication number: 20120229737
    Abstract: A polarization film comprising a polarization film substrate and a dye treated with an activated carbon, and a liquid crystal display device comprising the polarization film.
    Type: Application
    Filed: March 5, 2012
    Publication date: September 13, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toru Ashida, Tomoya Suzuki
  • Publication number: 20120229738
    Abstract: Disclosed is a liquid crystal display device, wherein u?on axis and v?on axis, u?max and v?max, and u?min and v?min satisfy following expressions (1), (2) and (3): u ave ? = ( u max ? - u min ? 2 ) , ? v ave ? = ( v max ? - v min ? 2 ) ( 1 ) ? ? ? u ? ? v ave - on ? ? axis ? = ( u ave ? - u on ? ? axis ? ) 2 + ( v ave ? - v on ? ? axis ? ) 2 ? 0.04 ( 2 ) 0.35 ? v on ? ? axis ? ? 0.55 ( 3 ) wherein u?on axis and v?on axis are hues in a black state observed in a front direction; u?max and v?max are maximum values of u? and v? in a black state among values observed in directions with an azimuth angle ranging from 0° to 360° and a polar angle of 60°; and u?min and v?min are minimum values of u? and v? in a black state among values observed in directions with an azimuth angle ranging from 0° to 360° and a polar angle of 60°.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Hirofumi TOYAMA, Yujiro YANAI, Naoyoshi YAMADA, Katsufumi OHMURO, Takumi ANDO
  • Publication number: 20120206580
    Abstract: A display panel and a display apparatus are provided. The display panel includes first and second substrates which are disposed opposite to each other and a liquid crystal layer formed in between; a color filter polarizing layer which is formed on one surface between the first and second substrates; and a polarizing layer. The color filter polarizing layer comprises a first metal linear grid arranged at different pitches to emit a first polarized component of incident light with different colors, and a second metal linear grid formed on an opposite surface of the one surface between the first and second substrates. The provided display panel and display apparatus, have reduced manufacturing costs and a simplified manufacturing process.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-eun CHUNG, Dong-hwan KIM, Il-yong JUNG
  • Publication number: 20120206676
    Abstract: A display panel and a display apparatus having the same are provided. The display panel includes a liquid crystal layer and comprises first and second substrates which are disposed opposite to each other; a color filter polarizing layer which formed on one surface between the first and second substrates, and which includes a first metal linear grid arranged at different pitches to emit a first polarized component of incident light with different colors; and a polarizing layer which includes a second metal linear grid formed on an opposite surface to the surface between the first and second substrates, wherein a metal material contained in the first metal linear grid is different from a metal material contained in the second metal linear grid. The provided display panel and display apparatus including the same, have decreased manufacturing costs and a simplified manufacturing process.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-eun CHUNG, Dong-hwan KIM, Il-yong JUNG, Tae-bae KIM
  • Publication number: 20120206677
    Abstract: A display panel and a display apparatus having the are provided. The display panel with a liquid crystal layer, includes first and second substrates which are disposed opposite to each other; a color filter polarizing layer which is formed on a surface of one of the first and second substrates between the first and second substrates, and includes a metal linear grid arranged at different pitches to emit a first polarized component of incident light with different colors; and a polarizing layer formed on an opposite surface to the surface of one of the first and second substrates. The provided display panel and display apparatus including the same, have decreased manufacturing costs and a simplified manufacturing process.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-eun CHUNG, Dong-hwan KIM, Il-yong JUNG
  • Publication number: 20120188491
    Abstract: A display apparatus includes a first substrate, a second substrate, and a cholesteric liquid crystal layer. The first substrate includes a first insulating substrate and pixel electrodes, and the second substrate includes a second insulating substrate facing the first substrate and a common electrode. The cholesteric liquid crystal layer reflects a first light of an external light and allows a second light to pass therethrough. An image formed by the first light is visible from a top surface of at least one of the first and second substrates. A light absorption layer is formed in a part of the remaining substrate opposite to one substrate representing the image.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 26, 2012
    Inventor: NAKCHO CHOI
  • Patent number: 8218108
    Abstract: The present invention provides a liquid crystal display device excellent in display qualities, capable of suppressing coloring of stains such as a fingerprint which has adhered to a surface of a display so that the stains are not recognized. The present invention is a liquid crystal display panel having a structure in which the first polarizer, the first substrate, a liquid crystal layer, the second substrate, and the second polarizer are stacked in this order toward a display surface, wherein the second polarizer includes an anti-reflective film on a display surface side, a reflection spectrum of the anti-reflective film having a bottom wavelength of less than 550 nm, at least one of the first and second substrates includes a color filter including three colors of blue, green, and red, and in the color filter, blue has the highest depolarization property of all the three colors.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: July 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuhiko Nakai, Kouji Kusuda
  • Patent number: 8189139
    Abstract: An object of the present invention is to provide a display device having a high contrast ratio by a simple and easy method. Another object of the present invention is to manufacture such a display device having a high contrast ratio at low cost. The present invention relates to a display device including a first substrate; a second substrate; a layer including a display element, wherein the layer including the display element is interposed between the first substrate and the second substrate; and stacked polarizers on the outer side of the first substrate or the second substrate. The stacked polarizers are arranged to be in a parallel Nicols state and the wavelength distributions of the extinction coefficients of the stacked polarizers are different from each other.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: May 29, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tetsuji Ishitani, Takeshi Nishi, Yuji Egi
  • Patent number: 8174646
    Abstract: A liquid crystal panel of the present invention comprise a liquid crystal cell, a first polarizer arranged on one of both sides of the liquid crystal cell, and a second polarizer arranged on the other side of the liquid crystal cell, wherein at least one of the first and the second polarizers is dyed with a dichroic material, and the dichroic ratio thereof is from 40 to 100. At least one of the polarizers preferably has a polarization degree of 99% or more and a single transmittance of 35% to 45%. Further, at least one of the polarizers preferably exhibits the following birefringence: ?nxy is from 0.015 to 0.030. The liquid crystal panel of the present invention has the above polarizers, therefore the liquid crystal panel attains high contrast ratio in oblique directions and excellent display characteristics.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: May 8, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kazunori Futamura, Junichi Nagase, Hiroyuki Yoshimi, Masaki Hayashi
  • Patent number: 8164717
    Abstract: A liquid crystal display includes a liquid crystal display panel having a first substrate, a second substrate disposed on an observer side with respect to the first substrate and opposed to the first substrate, a liquid crystal held between the first substrate and the second substrate, an upper polarizing plate disposed on the observer side with respect to the second substrate, and a resin film disposed on the observer side with respect to the upper polarizing plate and affixed in contact with the upper polarizing plate. The resin film is higher in surface hardness than the upper polarizing plate and has a surface hardness of at least 3H in terms of surface pencil hardness. At least one of the first and second substrates has a thickness of no greater than 0.5 mm, and a total thickness of the liquid crystal display panel is no greater than 2 mm.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: April 24, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Koichi Fukuda
  • Patent number: 8149495
    Abstract: A reflective display, comprising a plurality of pixels (10), each having a first electrode, a light-modifying layer (12), and a second electrode (3; 16) arranged to enable formation of an electric field in the light-modifying layer (12) through application of a voltage between the electrodes. The pixel (10) further includes an active portion (16) which is switchable between light-modifying states by means of said electric field, and an inactive portion (17). The inactive portion (17) is arranged for reflecting light so as to direct at least a fraction of incoming light (20) impinging on the inactive portion (17) towards the active portion (16). As a result, a contrast ratio of the reflective display is improved, since light is now directed from the inactive portion towards the active portion and thus contributes to the displayed image as observed by a viewer.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 3, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Sander Jurgen Roosendaal, Martinus Hermanus Wilhelmus Maria Van Delden
  • Patent number: 8149355
    Abstract: A liquid crystal display device includes a pair of substrates, electrodes formed on the opposing surfaces of the pair of substrates, and a liquid crystal layer twisted in the gap between the pair of substrates at a predetermined twisted angle. A normal polarizing plate to exhibit a polarizing function for the whole visible light is arranged on the outer surface of an observation side substrate in the pair of substrates. A color polarizing plate to exhibit a polarizing function for visible light of a wavelength band other than a specific wavelength band is arranged on the outer surface of the opposite side substrate in the pair of substrates. A reflecting plate to reflect light entering from the observation side toward the observation side is arranged on a surface of the color polarizing plate that is opposite to the surface that opposes the opposite side substrate.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: April 3, 2012
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kunpei Kobayashi, Toshiharu Nishino, Norihiro Arai
  • Publication number: 20120038859
    Abstract: There is provided a polarizing film which comprises a polyvinyl alcohol-based resin layer including dichroic materials. The polarizing film has (a) a film thickness t of 0.5 ?m to 5 ?m, and (b) an absorbance (absorbance per unit) of 1.5 or higher for extraordinary light per film thickness of 1 ?m relative to monochromatic light having a wavelength of 550 nm.
    Type: Application
    Filed: April 9, 2010
    Publication date: February 16, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Minoru Miyatake, Takashi Kamijo, Hiroaki Sawada
  • Publication number: 20120038858
    Abstract: To provide a liquid crystal display device in which the transmitted light is inhibited not only in the front direction but also in oblique directions in the black state.
    Type: Application
    Filed: April 23, 2010
    Publication date: February 16, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Mitsuyoshi Ichihashi, Yukito Saitoh
  • Patent number: 8111348
    Abstract: A liquid crystal display device includes a housing, a liquid crystal panel provided in the housing and comprises first and second transparent substrates spaced from each other at predetermined intervals, a sealing member to seal an internal space formed between the first and second transparent substrates, a liquid crystal to fill the internal space, first and second transparent electrodes formed in the first and second transparent substrates, respectively, and a polarizing plate to transmit light in a predetermined polarizing direction, a backlight unit disposed in the housing to emit surface light to the liquid crystal panel, and a polarizing filter disposed in the housing, and spaced from the liquid crystal panel at predetermined intervals to transmit predetermined polarized light and to block other polarized light of incident light.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: February 7, 2012
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Pil-yong Oh, Il-yong Jung
  • Patent number: 8089693
    Abstract: A color separation and polarization device is provided, which comprises a lens module, having a first frame including a polarization material received therein, and configured with a first light-entrance surface and a first light-emitting surface having a lens structure disposed thereon respectively, and a triangle-shaped optical structures, configured with a second light-entrance surface and a second light-emitting surface having triangle-shaped microstructures disposed thereon respectively. When a white light beam enters the first light-entrance surface, it is polarized by the polarization material, converged by the lens structure of the first light-emitting surface, splitting into a red beam, a green beam, and a blue beam by the triangle-shaped microstructures of the second light-entrance surface, and finally the three color beam are collimated by the triangle-shaped microstructures of the second light-emitting surface.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 3, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Hui-Hsiung Lin, Yu-Nan Pao
  • Patent number: 8063862
    Abstract: A liquid crystal display device includes a display section which enables color display in each of pixels, and a gradation control unit which controls a gradation level in each of the pixels. The display section includes a first white display structure which is configured to combine primary colors and to display white, and a second white display structure which is configured to include a color with a chromaticity different from a chromaticity of the primary color of the first white display structure and to display white. The gradation control unit has a first control mode in which the gradation level of each pixel is controlled by one of the first white display structure and the second white display structure, and a second control mode in which the gradation level of each pixel is controlled by a combination of the first white display structure and the second white display structure.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: November 22, 2011
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Yuuzo Hisatake
  • Patent number: 8059232
    Abstract: An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, a specular reflective polarizer (302), such as a broadband reflective polarizer, an LC cell (304), and a diffusive reflective polarizer (306). The LC cell (304) is interposed between the first dichroic polarizer (300) and the specular reflective polarizer (302).
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: November 15, 2011
    Assignee: Motorola Mobility, Inc.
    Inventors: Jim Zhuang, Tomohiro Ishikawa, Robert Polak
  • Patent number: 8013963
    Abstract: A color filter is described, including a first color filter layer, a first light absorbing layer, a second color filter pattern and a second light absorbing pattern. The first color filter layer is disposed over a substrate. The first light absorbing layer is disposed between the substrate and the first color filter layer. The second color filter pattern covers a portion of the first color filter layer. The second light absorbing pattern is disposed between the second color filter pattern and the first color filter layer.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: September 6, 2011
    Assignee: Himax Display, Inc.
    Inventors: Pei-Wen Ko, Ta-Shuang Kuan, Chin-Hsia Chen
  • Patent number: 8009251
    Abstract: The LCD sequentially includes, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate includes multiple transparent areas thereon. The first substrate includes multiple light-focusing arrays. Each of the light-focusing arrays includes multiple high-refractive areas and low-refractive areas disposed between the high-refractive areas. The multiple high-refractive areas includes a first high-refractive area and multiple second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: August 30, 2011
    Assignee: Au Optronics Corporation
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 7993017
    Abstract: A projection display apparatus 101 in which the light quantity adjusting means has a simple and readily interchangeable structure, and which can improve image quality by adjusting the quantity of light received by a light valve continuously, without causing illuminance irregularities, and without having unwanted light radiated onto the screen, the light quantity adjusting means 9 having light blocking members 91L, 91R for blocking light in transit to a second lens array 22, and rotational axes 91LA, 91RA for turnably supporting each of the light blocking members on an xy plane, the light blocking members 91L, 91R and rotational axes 91LA, 91RA being positioned so that the rotational axes 91LA, 91RA are disposed in positions symmetric with respect to the optical axis AX on the xy plane, and the turning range from the light blocking initiation position at which the light blocking members 91L, 91R, by being turned, start to block light in transit toward the second lens array 22 to the maximum light blocking posi
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 9, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiro Yamada, Motoo Takahashi, Akira Daijogo, Tomohiro Bessho, Kenji Samejima
  • Patent number: 7980701
    Abstract: A color combining optical system includes a first polarization splitting surface for light in a first wavelength range, and a second polarization splitting surface for light in a second and third wavelength range. The first polarization splitting surface guides illumination light in the first wavelength range to a first liquid crystal display (LCD) element and guides image light reflected from the first LCD element to a direction different from the illumination light. The second polarization splitting surface separates illumination light in the second and third wavelength range from each other, guides them to a second and third LCD element, respectively, and combines image light reflected from the second LCD element with image light reflected from the LCD element to guide combined light to the first polarization splitting surface which combines the image light reflected from the first LCD element with the combined light.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: July 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Kodama, Yu Yamauchi
  • Patent number: 7959296
    Abstract: A multiple path stereoscopic projection system is disclosed. The system comprises a polarizing splitting element configured to receive image light energy and split the image light energy received into a primary path and a secondary path, a reflector in the secondary path, and a polarization modulator or polarization modulator arrangement positioned in the primary path and configured to modulate the primary path of light energy. A polarization modulator may be included within the secondary path, a retarder may be used, and optional devices that may be successfully employed in the system include elements to substantially optically superimpose light energy transmission between paths and cleanup polarizers. The projection system can enhance the brightness of stereoscopic images perceived by a viewer. Static polarizer dual projection implementations free of polarization modulators are also provided.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: June 14, 2011
    Assignee: RealD Inc.
    Inventors: Matt Cowan, Lenny Lipton, Jerry Carollo
  • Patent number: 7951434
    Abstract: A polarizing plate is provided and is excellent in characteristics of optical compensation, small in a change of polarization performance over time and excellent in moisture and heat resistance. The polarizing plate contains a polarizing film and two transparent protective films provided one on each side of the polarizing film, in which at least one of the two protective films is an optical compensatory sheet containing a cellulose acylate film. The polarizing plate has specified single-plate transmittance and polarization degree P and has specified ranges of variations of the transmittance and the polarization degree P after a passage of a specified period of time under a high-temperature high-humidity atmosphere and a high-temperature low-humidity atmosphere. The liquid crystal display device of VA mode using the polarizing plate is provided.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: May 31, 2011
    Assignee: Fujifilm Corporation
    Inventor: Keiichi Taguchi
  • Patent number: 7948575
    Abstract: A liquid crystal display device includes a housing, a liquid crystal panel provided in the housing and comprises first and second transparent substrates spaced from each other at predetermined intervals, a sealing member to seal an internal space formed between the first and second transparent substrates, a liquid crystal to fill the internal space, first and second transparent electrodes formed in the first and second transparent substrates, respectively, and a polarizing plate to transmit light in a predetermined polarizing direction, a backlight unit disposed in the housing to emit surface light to the liquid crystal panel, and a polarizing filter disposed in the housing, and spaced from the liquid crystal panel at predetermined intervals to transmit predetermined polarized light and to block other polarized light of incident light.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pil-yong Oh, Il-yong Jung
  • Patent number: 7935396
    Abstract: An object of the present invention is to provide a liquid crystal display device that has an excellent mass-productivity and gives an image improved by the reduction of the chromaticity difference between white display and black display, the reduction of coloring and luminance in black display, and the improvement of the contrast ratio. In the present invention, of a pair of alignment films 131 and 132 formed on a pair of substrates 101 and 102, respectively, the alignment film 132 formed on the glass substrate 102 on the observer side is made of a material obtained by adding a photoisomerized compound to a photosensitive polymer and has anisotropic absorption all over the visible light wavelength region (approximately 400 nm to 750 nm).
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: May 3, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Publication number: 20110007243
    Abstract: Provided is a liquid crystal display device including a liquid crystal panel including: a first substrate on which a plurality of drain lines and a plurality of gate lines are formed, the plurality of gate lines crossing the plurality of drain lines; a second substrate which is arranged opposite to the first substrate via a liquid crystal; and an optical anisotropic film formed on a side of one of the first substrate and the second substrate, the side not being in contact with the liquid crystal; in which a region surrounded by the plurality of drain lines and the plurality of gate lines serves as a pixel region, in which the optical anisotropic film is formed of molecules which chemically bond to one of the first substrate and the second substrate in an aligned state.
    Type: Application
    Filed: June 3, 2010
    Publication date: January 13, 2011
    Inventors: Jun Tanaka, Miharu Otani, Masaya Adachi, Takato Hiratsuka
  • Patent number: 7864270
    Abstract: An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, an LC cell (304), and a diffusive reflective polarizer (307). The LC cell (304) is interposed between the first dichroic polarizer (300) and the diffusive reflective polarizer (307). Related methods are also set forth.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: January 4, 2011
    Assignee: Motorola, Inc.
    Inventors: Jim Zhuang, Tomohiro Ishikawa, Robert Polak
  • Patent number: 7857455
    Abstract: A multiple path stereoscopic projection system is disclosed. The system comprises a polarizing splitting element configured to receive image light energy and split the image light energy received into a primary path and a secondary path, a reflector in the secondary path, and a polarization modulator or polarization modulator arrangement positioned in the primary path and configured to modulate the primary path of light energy. A polarization modulator may be included within the secondary path, a retarder may be used, and optional devices that may be successfully employed in the system include elements to substantially optically superimpose light energy transmission between paths and cleanup polarizers. The projection system can enhance the brightness of stereoscopic images perceived by a viewer. Static polarizer dual projection implementations free of polarization modulators are also provided.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: December 28, 2010
    Assignee: RealD Inc.
    Inventors: Matt Cowan, Lenny Lipton, Jerry Carollo
  • Patent number: 7852560
    Abstract: A display includes a liquid crystal display panel, an optical cavity producing substantially collimated light and a birefringent reflective polarizer.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: December 14, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Andrew J. Ouderkirk, Olester Benson, Jr., Michael F. Weber, Carl A. Stover, David I. Wortman, Sanford Cobb, Jr.
  • Publication number: 20100259708
    Abstract: Provided is a liquid crystal display device including: a liquid crystal cell (15) including a first substrate (110), a second substrate (111), and a liquid crystal layer (160) sealed between the first substrate and the second substrate; a first polarization member (210) for transmitting light in a predetermined polarization direction; and a second polarization member (220) for transmitting light in another polarization direction which is orthogonal to the predetermined polarization direction. At least one of the first polarization member and the second polarization member includes a multilayer thin film polarizer including a plurality of thin film polarizers which are stacked so that transmission axes of the plurality of thin film polarizers are aligned. The multilayer thin film polarizer includes a thin film polarizer formed in a predetermined film thickness by coating with dye molecules which are aligned by a shear stress.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 14, 2010
    Inventors: Takato HIRATSUKA, Masaya Adachi, Miharu Otani, Jun Tanaka, Chie Yoshizawa
  • Patent number: 7812901
    Abstract: It is an object of the present invention to provide a liquid crystal display panel having a high contrast ratio in a front direction. A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate placed on the other side of the liquid crystal cell; and a retardation layer placed between the liquid crystal cell and the second polarizing plate. A refractive index ellipsoid of the retardation layer exhibits a relationship of n?ny>nz; and a light transmittance (T2) of the second polarizing plate is larger than a light transmittance (T1) of the first polarizing plate.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: October 12, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Naotaka Kinjo, Kentarou Yoshida, Takashi Shimizu, Shinobu Nagano, Nao Murakami, Masaki Hayashi
  • Publication number: 20100238376
    Abstract: It is an object to provide a display that can reliably shield visible light in the entire wavelength regions when viewed from an oblique direction and a viewing angle control element used for the display. A viewing angle control liquid crystal panel (2) is comprised of a liquid crystal cell (21) and an emission-side polarizing plate (22). When light having a part of wavelength components (R,G) in the visible wavelength regions enters at least at a predetermined angle, the liquid crystal cell (21) provides the incident light with a phase difference so as to function as a first light-shielding layer that shields the light of the R and G components not to pass through the emission-side polarizing plate (22).
    Type: Application
    Filed: May 20, 2008
    Publication date: September 23, 2010
    Inventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
  • Publication number: 20100220267
    Abstract: The present invention is a lengthy-shaped polarizing plate comprising a linearly-polarized light separation element, a linear light polarizing film and a protection film in this order, wherein said linearly-polarized light separation element includes a layer composed of a resin A whose inherent birefringence value is negative and has a linearly-polarized light transmission axis in a crosswise direction.
    Type: Application
    Filed: February 25, 2010
    Publication date: September 2, 2010
    Applicant: ZEON CORPORATION
    Inventors: Taku Hatano, Shunsuke Yamanaka, Kouhei Arakawa
  • Patent number: 7763330
    Abstract: A dichroic guest-host polarizer comprises an oriented polymerized liquid crystal host and aligned therewith a dichroic guest. The dichroic ratio of the polarizer is about 15 or more. The polarizer may have a small thickness, be manufactured using a wet deposition method, optionally in accordance with a desired pattern, and be provided on the inside of a liquid crystal cell. Polymerizable liquid crystals having a highly ordered mesophase which may be suitable used to obtain highly oriented polymer films such as polarizer films are disclosed.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: July 27, 2010
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Johan Lub, Emiel Peeters, Dirk Jan Broer
  • Publication number: 20100134726
    Abstract: A polarizing element, containing: a transparent support; a light absorption anisotropic layer formed of a dichroic dye composition; and a transparent resin cured layer, with the layers being laminated in this order on the support, and with the composition containing at least one dichroic dye of formula (I) which has nematic mesomorphism but containing no liquid crystalline achromatic compound: wherein R1 to R4 are a hydrogen atom or a substituent; R5 and R6 are a hydrogen atom or an alkyl group; L1 represents —N?N—, —CH?N—, —N?CH—, —C(?O)O—, —OC(?O)— or —CH?CH—; A1 represents a phenyl, naphthyl or aromatic heterocyclic group; B1 represents a divalent aromatic hydrocarbon or divalent aromatic heterocyclic group; and n is an integer from 1 to 5.
    Type: Application
    Filed: November 25, 2009
    Publication date: June 3, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Shinichi Morishima, Eri Utagawa
  • Publication number: 20100060831
    Abstract: A liquid crystal panel of the present invention comprise a liquid crystal cell, a first polarizer arranged on one of both sides of the liquid crystal cell, and a second polarizer arranged on the other side of the liquid crystal cell, wherein at least one of the first and the second polarizers is dyed with a dichroic material, and the dichroic ratio thereof is from 40 to 100. At least one of the polarizers preferably has a polarization degree of 99% or more and a single transmittance of 35% to 45%. Further, at least one of the polarizers preferably exhibits the following birefringence: ?nxy is from 0.015 to 0.030. The liquid crystal panel of the present invention has the above polarizers, therefore the liquid crystal panel attains high contrast ratio in oblique directions and excellent display characteristics.
    Type: Application
    Filed: October 16, 2007
    Publication date: March 11, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazunori Futamura, Junichi Nagase, Hiroyuki Yoshimi, Masaki Hayashi
  • Patent number: 7671520
    Abstract: A display device comprising at least one substrate(1, 2), a first and a second electrode(7, 8), a display medium (12) and an optically active layer(3, 5), wherein said optically active layer comprises a polarizer (3) and is arranged between said substrate and said display medium, and wherein said substrate is made of a birefringent material.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: March 2, 2010
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Henri Jagt, Bianca Maria Irma Van Der Zande, Emiel Peeters, Peter Albert Cirkel, Johannes Willem Hofstraat
  • Patent number: 7652732
    Abstract: There are provided a substrate which has solved an unsatisfactory adhesion problem of a seal part in a liquid crystal cell comprising a retardation layer provided on the inner side of the cell, and a liquid crystal cell using the substrate. A black matrix layer 12 formed of a metal and its picture frame part 12A, a color filter layer 13, and a retardation layer 14 are stacked on a substrate 11, and an area including at least the picture frame part 12A is an area to be sealed.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: January 26, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoya Kawashima, Norihisa Moriya
  • Patent number: 7646452
    Abstract: A production method for a display panel according to the present invention is production method for a display panel 100 including a display panel 101 and a plurality of microlenses 107 provided on a light-incident side of the display panel 101, including: (a) a step of providing a display panel having a plurality of pixels in a matrix arrangement, wherein each of the plurality of pixels has a plurality of picture elements, including a first picture element 104B transmitting first color light and a second picture element 104R (104G) transmitting second color light which is different from the first color light; (b) a step of forming a photocurable material layer 105 on one of a pair of principal faces, being opposite to each other, of the display panel; (c) a step of exposing the photocurable material layer to light via the display panel, wherein the photocurable material layer is at least partially cured with light which has been transmitted through at least the first picture element; and (d) a step of removin
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: January 12, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Nakanishi, Kuniaki Okada
  • Patent number: 7643110
    Abstract: There are provided a substrate which has solved an unsatisfactory adhesion problem of a seal part in a liquid crystal cell comprising a retardation layer provided on the inner side of the cell, and a liquid crystal cell using the substrate. A black matrix layer 12 formed of a resin composition containing a black colorant and its picture frame part 12A, a color filter layer 13, and a retardation layer 14 are stacked on a substrate 11, and an area including at least the picture frame part 12A is an area to be sealed.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: January 5, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoya Kawashima, Norihisa Moriya
  • Patent number: 7643109
    Abstract: There are provided a substrate which has solved an unsatisfactory adhesion problem of a seal part in a liquid crystal cell comprising a retardation layer provided on the inner side of the cell, and a liquid crystal cell using the substrate. A color filter substrate includes a substrate 11, and at least a black matrix layer 12, a color filter layer 13, and a retardation layer 14 stacked on the substrate 11. The black matrix layer 12 and the color filter layer 13 are stacked on the substrate it while providing a margin around the periphery of the substrate 11. The retardation layer 14 is stacked on the black matrix layer 12 and the color filter layer 13 in a larger area than the area where the black matrix layer 12 and the color filter layer 13 are stacked. The substrate 11 in its margin, where neither the black matrix layer 12 nor the color filter layer 13 is stacked, is a predetermined seal area.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: January 5, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoya Kawashima, Norihisa Moriya
  • Publication number: 20090201446
    Abstract: An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, a specular reflective polarizer (302), such as a broadband reflective polarizer, an LC cell (304), and a diffusive reflective polarizer (306). The LC cell (304) is interposed between the first dichroic polarizer (300) and the specular reflective polarizer (302).
    Type: Application
    Filed: February 8, 2008
    Publication date: August 13, 2009
    Applicant: Motorola, Inc.
    Inventors: Jim Zhuang, Tomohiro Ishikawa, Robert Polak