Passive Liquid Crystal Polarizer Patents (Class 349/194)
  • Patent number: 11022784
    Abstract: Folding optics are used in conjunction with a lens system to reduce a back focal length of a head-mounted display. The lens system provides optical power to focus light from an optical display. The folding optics reflects light to fold upon itself to reduce a distance between the lens system and the optical display.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: June 1, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Brian Wheelwright, Ying Geng, Fenglin Peng, Yusufu Njoni Bamaxam Sulai, Jacques Gollier
  • Patent number: 11002896
    Abstract: Disclosed is a retardation film which shows a high light selective absorbency to visible rays having short wavelengths near 400 nm to have a high light resistance, and which can give, when used in a display device, good display properties to the display device. This film is a retardation film, satisfying all of the following formulae (1) to (4): 2?A(380) (1), 0.5?A(400) (2), 0.4?A(420)/A(400) (3), and 100 nm?Re(550)?170 nm (4), in which each A(?) represents the absorbance of the film at a wavelength ? nm, and Re (550) represents the in-plane retardation value of the film to a light ray having a wavelength of 550 nm.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: May 11, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki Hatanaka, Shinnosuke Yoshioka, Shoichi Ozawa, Tatsuaki Kasai
  • Patent number: 10937994
    Abstract: An organic electroluminescence display device includes, from a visible side, at least: a circular polarization plate; and an organic electroluminescence display element having a pair of electrodes and an organic light emitting layer sandwiched therebetween. A high refractive index layer has a refractive index of greater than 1.7 and less than 2.1 is disposed between the plate and one of the electrodes on the visible side, the plate has a polarizer, a ?/2 plate, and a ?/4 plate in this order from the visible side, a retardation RthA (550) of the ?/2 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than ?120 nm and less than ?40 nm, and a retardation RthB (550) of the ?/4 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than ?60 nm and less than 20 nm.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: March 2, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Shinpei Yoshida
  • Patent number: 10858590
    Abstract: A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 8, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shinnosuke Yoshioka, Noriyuki Hida, Katsuaki Miyazaki, Daichi Fujimoto
  • Patent number: 10734454
    Abstract: Display stacks are disclosed. More specifically, display stacks including an emissive display including a plurality of organic light emitting diodes, a circular polarizer, and a color correction film disposed between the emissive display and the circular polarizer are disclosed. The color correction film includes a plurality of microlayers and may provide reduced color shift performance between on and off-axis viewing angles compared to display stacks not including the color correction film.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: August 4, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Gilles J. Benoit, Daniel J. Schmidt, Stephen P. Maki
  • Patent number: 10598982
    Abstract: The present disclosure provides a LCD screen, including a liquid crystal panel, a first functional layer disposed on an array substrate of the liquid crystal panel, a quarter-wave plate and a polarizing layer sequentially stacked on the first functional layer, wherein the array substrate has a metal wire that reflects ambient light sequentially passing through the polarizing layer, the quarter-wave plate and the first functional layer and striking the surface of the metal wire; an included angle is between the optical axis of the quarter-wave plate and the absorption axis of the polarizing layer so as to block the ambient light reflected by the metal wire in the polarizing layer. The angle between the optical axis of the quarter-wave plate and the absorption axis of the polarizing layer of the present disclosure is 30-60°, so that the ambient light entering the polarizing layer is blocked in the polarizing layer.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: March 24, 2020
    Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Bo Hai
  • Patent number: 10551538
    Abstract: A flexible display device includes a display module including a bending area that is bendable along a reference axis, and a polarization member disposed on the display module. The polarization member includes a ?/4 phase retardation layer disposed on the display module and including a nematic liquid crystal coating layer. The polarization member further includes a first adhesion member disposed on the ?/4 phase retardation layer, a ?/2 phase retardation layer disposed on the first adhesion member and including a discotic liquid crystal coating layer, a second adhesion member disposed on the ?/2 phase retardation layer, and a line polarizer disposed on the second adhesion member and including an absorption axis, wherein an angle between the reference axis and the absorption axis is about 15 degrees to about 75 degrees.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Heeyoung Lee, Eunmi Seo
  • Patent number: 10495791
    Abstract: The present invention provides an optical film including a light reflection layer, in which the light reflection layer is a layer in which alignment of liquid crystal molecules is immobilized, the liquid crystal molecule forms a helical structure in a film thickness direction of the light reflection layer, and a tilt angle of the liquid crystal molecule is 15° to 55°. The present invention also provides a manufacturing method of the optical film including curing a polymerizable liquid crystal composition including a liquid crystal compound and a chiral agent interposed between a support and another support. In the optical film according to the present invention, an absolute value of oblique retardation is smaller. In the liquid crystal display device including the optical film, front surface brightness is high and an oblique change in the shade is suppressed.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 3, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Hideyuki Nishikawa, Kunihiro Atsumi, Wataru Hoshino, Yoshiaki Takada
  • Patent number: 10490612
    Abstract: An organic light emitting diode display includes: a display module including a first organic light emitting diode to emit light with a first wavelength, a second organic light emitting diode to emit light with a second wavelength, and a third organic light emitting diode to emit light with a third wavelength; a phase difference layer including a first liquid crystal pattern on the first organic light emitting diode, and a second liquid crystal pattern on the second organic light emitting diode and the third organic light emitting diode; and a linear polarization layer on the phase difference layer.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: November 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk Choi, Hee Young Lee, Cheol Kyu Kim, Sun Haeng Cho, Hyun-Joo Hwang
  • Patent number: 10459132
    Abstract: An optical member includes: a substrate; and a dot formed on a surface of the substrate. The dot has wavelength selective reflecting properties, and a cholesteric structure which has a stripe pattern including bright and dark portions in a cross-sectional view of the dot when observed with a scanning electron microscope. A surface shape of the dot opposite to the substrate in a cross-section of the dot in a thickness direction has at least one inflection point. In the cross-section, an angle between a normal line perpendicular to a line, formed using a first dark portion from a surface of the dot opposite to the substrate, and the surface of the dot, is in a range of 70° to 90°. A proportion of a retroreflective area of the optical member is high when observed after light irradiation from an oblique direction to a normal direction perpendicular to the optical member.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Akira Yamamoto, Yoji Ito, Michio Nagai, Daisuke Kashiwagi, Nobuhiko Ichihara
  • Patent number: 10279603
    Abstract: A recording material includes applying a first ink including a first polymerized compound using an inkjet method, polymerizing the first polymerized compound using ultraviolet light irradiation to form a first layer, applying a second ink containing a second polymerized compound and metal powder on the area on which the first layer is formed using the inkjet method, and polymerizing the second polymerized compound using ultraviolet light irradiation to form a second layer. A discharged volume of the first ink in the area is 2.0 to 20.0 g/m2. A time from landing of the first ink droplets until ultraviolet light irradiation is 0.0010 to 1.0 second. A discharged volume of the second ink in the area is 10 to 80 volume % compared to the discharged volume of the first ink. A time from landing of the second ink droplets until ultraviolet light irradiation is 5.0 to 60.0 seconds.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: May 7, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Tomohiro Ogawa, Hiroshi Takiguchi, Naoyuki Toyoda
  • Patent number: 9939675
    Abstract: A color filter substrate, a liquid crystal display panel, and a liquid crystal display are described. The color filter substrate has: a base substrate, a color resist layer disposed on a surface of the base substrate and having a plurality of colored-filter color resists each configured to filter a stray light and emit a light corresponding to a color; an upper polarizing sheet disposed on the other surface of the base substrate; and a ¼ wavelength plate covering on the upper polarizing sheet and having a plurality of areas which are respectively corresponding to the colored-filter color resists and face toward the colored-filter color resists, respectively. An in-plane retardation Re of the ¼ wavelength plate in each of the areas satisfies: Re=?/4, wherein ? is a wavelength of the light corresponding to the color.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: April 10, 2018
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Haibo Peng
  • Patent number: 9895866
    Abstract: Disclosed are an anisotropic organic thin film and its manufacturing method. The method includes steps of depositing a mixed solution including an ionic liquid and a polymerizable material on a substrate; separating positive ions from negative ions in the ionic liquid, so that the polymerizable material is aligned; polymerizing the aligned polymerizable material, so that an aligned first thin film is obtained after cured; and depositing liquid crystal molecules on the first thin film, and polymerizing the liquid crystal molecules to form a second thin film, wherein the second thin film is aligned in a way that matches with the first thin film, and the first thin film and the second thin film constituent the anisotropic organic thin film.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: February 20, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Wei Huang
  • Patent number: 9786724
    Abstract: An organic light emitting diode display includes: a display module including a first organic light emitting diode to emit light with a first wavelength, a second organic light emitting diode to emit light with a second wavelength, and a third organic light emitting diode to emit light with a third wavelength; a phase difference layer including a first liquid crystal pattern on the first organic light emitting diode, and a second liquid crystal pattern on the second organic light emitting diode and the third organic light emitting diode; and a linear polarization layer on the phase difference layer.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 10, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk Choi, Hee Young Lee, Cheol Kyu Kim, Sun Haeng Cho, Hyun-Joo Hwang
  • Patent number: 9612520
    Abstract: A polarized projection device includes a light source, a light modulator, and a lens module. The light source is configured for providing a light beam. The light modulator is configured for modulating the light beam into an image. The lens module is configured for converting the image into a polarized image, and includes a polarized prism group, a first polarized module, a second polarized module, a lens, and a half wave plate. The polarized prism group has an incident surface, a light-emitting surface, a first relay surface, and a second relay surface. The image enters the polarized prism group from the incident surface. The first (second) polarized module is disposed off axis at the first (second) relay surface and includes a first (second) reflector and a first (second) quarter wave plate. The lens is disposed at the light-emitting surface. The half wave plate is partially disposed on the lens.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: April 4, 2017
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: June-Jei Huang
  • Publication number: 20150146156
    Abstract: To provide an optically anisotropic substance having a negative uniaxial phase difference film and a positive uniaxial phase difference film, and excellent heat resistance and sputtering resistance. The positive uniaxial phase difference film is formed in combination with a bifunctional polymerizable liquid crystal compound, the negative uniaxial phase difference film is formed in combination of the bifunctional polymerizable liquid crystal compound with an optically active compound having a polymerizable binaphthol moiety, and additional thermosetting treatment (postcure) is applied after the negative uniaxial phase difference film is photocured, and when glass transition temperature after the negative uniaxial phase difference film is cured is 85° C. or higher and 115° C. or lower, additional thermosetting treatment temperature is adjusted to 220° C. or higher and 250° C. or lower, and when the glass transition temperature is higher than 115° C.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 28, 2015
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshiharu HIRAI, Nagahisa MIYAGAWA, Daisuke OOTSUKI, Mayumi TANABE, Kazumi NARA
  • Patent number: 9019255
    Abstract: An organic light emitting display apparatus includes a polarizer film arranged on a substrate or an encapsulation substrate that faces an image realized by a display unit, wherein the polarizer film includes a plurality of regions having different light transmittances. By using the polarizer film, a luminance difference due to a voltage drop may be compensated for so that a uniform luminance may be obtained when the image is realized.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Joo Hwang, Hee-Chul Jeon, Jung-I Yun, Sae-Hee Lim
  • Publication number: 20150103295
    Abstract: A display device includes a first substrate, a second substrate, a first polarization element film which is directly formed on a surface of the second substrate on a side opposite to a side where the first substrate is arranged, and a first polarization layer which is formed in contact with a surface of the first polarization element film on a side opposite to a side where the second substrate is arranged. The first polarization element film is made of an aligned lyotropic liquid crystal material, and the first protective layer is made of a material having a refractive index smaller than a refractive index of the first polarization element film in a transmission axis direction, and has a thickness smaller than a thickness of the first polarization element film.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 16, 2015
    Inventors: Takato Hiratsuka, Masaya Adachi, Hiroshi Sasaki, Miharu Otani
  • Publication number: 20150103279
    Abstract: This application relates a liquid crystal alignment film, a manufacturing method of the liquid crystal alignment film, an optical filter, and a display device. According to one illustrative liquid crystal alignment film, for example, a stereoscopic image can be displayed in wide viewing angles without losses of the brightness.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Inventors: Byoung Kun JEON, Moon Soo Park, Bu Gon Shin, Sin Young Kim, Jong Byung Lee, Da Mi Lee, Ji Hoon Park
  • Publication number: 20150079380
    Abstract: To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 19, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Ayako MURAMATSU, Shinnosuke SAKAI, Teruki NIORI, Shinichi MORISHIMA
  • Publication number: 20150062701
    Abstract: There is provided a display device including a lens which guides light from a light source to a display surface, and a compensation member, having an inside surface opposite to a lens surface of the lens divided into a plurality of two-dimensional regions, in which a direction of an advance axis or a delay axis is controlled for each of the regions.
    Type: Application
    Filed: August 11, 2014
    Publication date: March 5, 2015
    Applicant: Sony Corporation
    Inventor: Ryoko Horikoshi
  • Patent number: 8960914
    Abstract: Provided is a laser projection apparatus which forms each one frame by performing two-dimensional scanning with laser light and projects images on a screen (201) with blanking periods inserted between frames, the laser light having been outputted from a laser light source (110). The laser projection apparatus is provided with a chive controlling device (132) which, in each of the blanking periods, changes the polarization state of the laser light having been outputted from the laser light source. This configuration enables speckle reduction by having the polarization state changed from one frame to another, and also enables favorable image projection since there is no change in luminance within each one of the frames. Thus, it is made possible to obtain image quality more favorable than that obtained conventionally.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: February 24, 2015
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Kenji Konno
  • Publication number: 20150049291
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having a first phase difference layer and a second phase difference layer, wherein the second phase difference layer has an optical property represented by the formula (3), the second phase difference layer has a thickness of 0.2 ?m to 2.0 ?m, and further, the optical film has optical properties represented by the formulae (1) and (2): Re(450)/Re(550)?1.00??(1) 1.00?Re(650)/Re(550)??(2) nx?ny<nz??(3).
    Type: Application
    Filed: August 7, 2014
    Publication date: February 19, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150042943
    Abstract: Optical film having a first phase difference layer and a second phase difference layer, wherein the second phase difference layer having an optical property represented by the formula (3), and the optical film has optical properties represented by the formula (1) and the formula (2). Re(450)/Re(550)?1.00(1)1.00?Re(650)/Re(550)(2)nx?ny<nz(3), wherein, Re(450) represents the in-plane phase difference value at a wavelength of 450 nm, Re(550) represents the in-plane phase difference value at a wavelength of 550 nm, and Re(650) represents the in-plane phase difference value at a wavelength of 650 nm, nx represents the principal refractive index in a direction parallel to the film plane, ny represents the refractive index in a direction parallel to the film plane and orthogonally-crossing the direction of nx, nz represents the refractive index in a direction vertical to the film plane, in an index ellipsoid formed by the phase difference layer.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150042941
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having a first phase difference layer and a second phase difference layer, wherein the second phase difference layer has an optical property represented by the formula (3), and the optical film has optical properties represented by the formulae (1), (2) and (30) is provided: ?n(450)/?n(550)?1.00??(1) 1.00??n(650)/?n(550)??(2) nx?ny<nz??(3) 0.000<T<0.1??(30).
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150042942
    Abstract: To provide an elliptical polarization plate excellent in suppression of coloration and light leakage in display. An elliptical polarization plate having a transparent protective film pasted to one surface of a polarizer and an optically anisotropic film pasted to the other surface thereof, wherein, when measured under condition of incident polarization in the film normal direction from the side of the transparent protective film, the visibility corrected single body transmittance is 43.0% or more, the visibility corrected polarization degree is 95.0% or more, the single body hue value a* is ?2.0 to 1.0 and the single body hue value b* is ?1.0 to 5.0, and the optically anisotropic film satisfies the formulae (1), (2) and (3): Re(450)/Re(550)?1.00??(1) 1.00?Re(650)/Re(550)??(2) 100<Re(550)<160??(3).
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150043071
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having a first phase difference layer and a second phase difference layer, wherein the second phase difference layer has an optical property represented by the formula (3) and the optical film has optical properties represented by the formulae (1), (2) and (30): Re(450)/Re(550)?1.00??(1) 1.00?Re(650)/Re(550)??(2) nx?ny<nz??(3) 0.001<|Rth(550)/Re(550)|<0.2??(30).
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150042940
    Abstract: Provided is a method capable of producing an optically anisotropic laminated body in which defects are hardly generated so that light leakage is scarcely caused. This method is a method for producing an optically anisotropic laminated body including a substrate, an oriented film, and an optically anisotropic film, and has steps of: applying, to a surface of the substrate, an oriented-film-forming composition including an oriented-film-forming material and a solvent and having a viscosity of 4 mPa·s or less at 25° C., and drying the resultant to form the oriented film; and then applying, onto the resultant oriented film, an optically-anisotropic-layer-forming composition including a polymerizable liquid crystal compound, and drying the resultant to orient the polymerizable liquid crystal compound vertically to the surface of the substrate to form the optically anisotropic film.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tadahiro KOBAYASHI
  • Publication number: 20150042944
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having at least two phase difference layers and having optical properties represented by the formulae (30) and (31) is provided: ?2.0?a*?0.5??(30) ?0.5?b*?5.0??(31) wherein, a* and b* represent the chromatic coordinate in the L*a*b* color system.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Akira YOKOTA, Tadahiro KOBAYASHI, Mitsutaka SASE, Yoshifumi KOMATSU
  • Publication number: 20150041051
    Abstract: Laminated body including a substrate and an optically anisotropic layer. This layer satisfies the following expressions (1), (2), and (3): ?n50(450)/?n50(550)?1.00 (1), and 1.00??n50(650)/?n50(550) (2) wherein ?n50(450), ?n50(550) and ?n50(650) represent the respective birefringences of the layer that are derived from retardation values of the laminated body that are obtained by measuring the laminated body at wavelengths of 450 nm, 550 nm and 650 nm in the state of inclining the fast axis of the layer at an angle of 50 degrees to act as an inclined central axis; and nz>nx?ny (3) wherein nx and ny represent the respective refractive indexes of the substrate in directions parallel with the plane of the substrate, these directions being orthogonal to each other, and nz represents the refractive index of the substrate in a direction orthogonal to each of the directions about nx and ny.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tadahiro KOBAYASHI
  • Patent number: 8952599
    Abstract: A polarization structure for a display device is disclosed. In one embodiment, the polarization structure includes a retardation layer, a polarizing layer and a polarizing pattern. The retardation layer may be configured to produce a phase difference between two polarization components of an incident light. The polarizing layer may have an adsorption axis along a first direction on the retardation layer. The polarizing layer may include a first region and a second region surrounding at least one side of the first region. The polarizing pattern may have an adsorption axis along a second direction perpendicular to the first direction in the second region.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Goo Jung, Jang-Seok Ma
  • Publication number: 20150029456
    Abstract: Provided is an optically anisotropic body having good coatability onto a laminate, in which the laminate includes an optically anisotropic layer formed of a composition including a liquid crystal compound by direct coating, and an isotropic resin layer formed on the optically anisotropic layer by direct coating, and has good coatability onto the isotropic resin layer. The laminate includes an optically anisotropic layer and an isotropic resin layer formed of a resin composition directly coated on the optically anisotropic layer, in which the optically anisotropic layer is a layer formed by curing a liquid crystal composition including a liquid crystal compound containing a polymerizable group; the isotropic resin layer is the outermost layer of the laminate; and the surface energy on the side of the isotropic resin layer of the laminate is 34.0 mN/m or more.
    Type: Application
    Filed: October 1, 2014
    Publication date: January 29, 2015
    Applicant: FUJIFILM CORPORATION
    Inventor: Reona IKEDA
  • Publication number: 20150029445
    Abstract: A retardation film includes a first optically anisotropic layer having liquid crystal compounds fixed in a homogeneously aligned state and a leveling agent, and having an order parameter of 0.75 to 0.95 and a thickness of 0.3 to 3.0 ?m; an intermediate layer including a resin having a solubility parameter SP value of 21.5 to 24.7, calculated by Hoy's method, the intermediate layer having a thickness of 3.0 ?m or less; and a second optically anisotropic layer having liquid crystal compounds fixed in a homeotropically aligned state, and having an order parameter OP of 0.6 to 0.95 and a thickness of 0.3 to 3.0 ?m, wherein OP is represented by the following equation; OP=(A??A?)/(2A?+A?) where A? is absorbance of the liquid crystal compounds for light polarized parallel to an alignment direction, and A? is absorbance of the liquid crystal compounds for light polarized perpendicular to the alignment direction.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 29, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Jun TAKEDA, Shunya KATOH, Michio NAGAI, Yoji ITO
  • Publication number: 20150022748
    Abstract: There is provided a phase difference film which includes a substrate, an acrylic resin layer, an intermediate layer containing a main component of the substrate and a main component of the acrylic resin layer between the substrate and the acrylic resin layer, and a specific phase difference layer directly on a surface on the opposite side to the intermediate layer of the acrylic resin layer, in which the substrate contains at least one kind of resin selected from a cellulose acylate resin, a cyclic olefin resin, a polycarbonate resin, an acrylic resin, and a styrene resin, the acrylic resin layer contains an acrylic resin having a polar group, the intermediate layer has a thickness of 0.1 ?m to 10 ?m, and the phase difference layer is formed by polymerizing a polymerizable liquid crystal compound containing a vertical alignment agent.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Jun TAKEDA, Yuki MATSUDA, Nobuhiko ICHIHARA
  • Patent number: 8922738
    Abstract: In a display device which includes: a first substrate; a second substrate; and a thin film polarizer which is directly formed on a surface of the second substrate on a side opposite to the first substrate, the thin film polarizer includes a polarization element film and a protection layer which is laminated to the polarization element film, the polarization element film is made of an aligned lyotropic liquid crystal material, and the protection layer has a refractive index smaller than a refractive index of the polarization element film in a transmission axis direction. The protection layer may have a thickness smaller than a thickness of polarization element film.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: December 30, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takato Hiratsuka, Masaya Adachi, Hiroshi Sasaki, Miharu Otani
  • Patent number: 8917376
    Abstract: An object of the present invention is to provide a thin polarizing plate exhibiting a high contrast ratio. A polarizing plate of the present invention includes: a polarizer; a first protective layer provided on one side of the polarizer; and a second protective layer provided on the other side of the polarizer, wherein the first protective layer has a function of separating incident light into two polarized light components perpendicular to each other, transmitting one polarized light component, and reflecting the other polarized light component. Such a polarizing plate can exhibit a high contrast ratio, for example, in the case of being used in a liquid crystal display apparatus.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: December 23, 2014
    Assignee: Nitto Denko Corporation
    Inventor: Hiroyuki Yoshimi
  • Patent number: 8896774
    Abstract: To provide an optical film which may be used as a ?/4 plate and may provide a display device which has specific optical characteristics, may be manufactured with high productivity and has an excellent 3D-display performance. To provide a 3D-display device having a physical properties having excellent antireflective property and light fastness with high productivity. An optical film having at least one optically anisotropic layer, wherein an in-plane retardation. Re at an arbitrary wavelength in a visible light region is 80 nm to 201 nm, an Nz value represented by the following equation is 0.1 to 0.9, and when the in-plane retardations at wavelengths of 450 nm, 550 nm and 650 nm are referred to as Re450, Re550 and Re650, respectively, Re450/Re550 is 1.18 or less and Re650/Re550 is 0.93 or more. Nz=0.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: November 25, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Yuta Takahashi, Hisato Nagase
  • Patent number: 8895118
    Abstract: The present invention relates generally to the field of organic chemistry and particularly to the nematic lyotropic liquid crystal solution and negative dispersion retardation plate for application in 3D liquid crystal displays. The negative dispersion retardation plate comprises a substrate, and at least one optically anisotropic retardation layer comprising a multi-component guest-host composition coated onto the substrate.
    Type: Grant
    Filed: November 6, 2011
    Date of Patent: November 25, 2014
    Assignee: Crysoptix K.K.
    Inventors: Arthur Geivandov, Pavel Ivan Lazarev, Serguei Palto
  • Publication number: 20140340626
    Abstract: An element for protection against forgery and/or copying is arranged on a substrate and includes an optically anisotropic layer which has at least two regions with different optical axes, characterized in that the substrate is a reflective polarizer. The optically anisotropic layer can include cross-linked liquid crystal monomers. The anisotropic layer can be placed on an orientation layer. The orientation layer can be in contact with the polarizer and can include a photo-oriented polymer network. A device for protection against forgery and/or copying is characterized in that an element as set forth above and an analyzer are arranged on the same substrate.
    Type: Application
    Filed: July 31, 2014
    Publication date: November 20, 2014
    Applicant: Rolic AG
    Inventors: Martin SCHADT, Hubert SEIBERLE
  • Patent number: 8888292
    Abstract: A projection apparatus is disclosed. The projection apparatus includes a light source module, a first light splitting element, a first light valve unit, a first light modulator, a second light modulator and a light consolidating element. A light beam is provided by the light source module, and is split into a first and a second polarized light beam by the first light splitting element. In different time sequences, the first and the second polarized light beams are formed into a first, a second, a third and a fourth image light by the first light valve unit. Then, these image lights are transformed into viewing angle images by the first and the second light modulators. Then, via the light consolidating element, the first, the second, the third and the fourth view angle images are projected to a viewer and a stereoscopic image is formed.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: November 18, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: Junejei Huang
  • Patent number: 8848160
    Abstract: A display screen includes a substrate comprising a first surface and a second surface opposite to the first surface; a beam-splitting polarizer formed on a first surface of the substrate; and a non-conductive metal layer formed on a second surface of the substrate. The beam-splitting polarizer is a cholesterol liquid crystalline polarization layer.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 30, 2014
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Qi-Jian Du, Chwan-Hwa Chiang
  • Publication number: 20140284582
    Abstract: The phase difference plate for a circularly polarizing plate includes a first optically anisotropic layer; and a second optically anisotropic layer, in which the first and second optically anisotropic layers contain a liquid crystal compound that is helically aligned around a helical axis which is in a thickness direction of each of the layers, the liquid crystal compound has a same helix direction in the first optically anisotropic layer and in the second optically anisotropic layer, and a helix angle of the liquid crystal compound each in the first optically anisotropic layer and in the second optically anisotropic layer is in a predetermined range. The phase difference plate can sufficiently suppress the mixing of black with another color observed in the front direction when being stuck as a circularly polarizing plate on a display apparatus.
    Type: Application
    Filed: March 24, 2014
    Publication date: September 25, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Yukito SAITOH, Hiroshi SATO, Mitsuyoshi ICHIHASHI
  • Publication number: 20140284583
    Abstract: The phase difference plate for a circularly polarizing plate including a first optically anisotropic layer, and a second optically anisotropic layer, in which the first optically anisotropic layer contains a liquid crystal compound helically aligned around a helical axis in its thickness direction, a helix angle of the liquid crystal compound in the first optically anisotropic layer is in a predetermined range, and an in-plane slow axis in a surface of the first optically anisotropic layer at the second optically anisotropic layer side is in parallel with an in-plane slow axis of the second optically anisotropic layer. The phase difference plate can sufficiently suppress the mixing of black with another color observed in the front direction when being stuck as a circularly polarizing plate on a display apparatus.
    Type: Application
    Filed: March 24, 2014
    Publication date: September 25, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Yukito SAITOH, Hiroshi SATO, Mitsuyoshi ICHIHASHI
  • Publication number: 20140268002
    Abstract: A pattern phase difference film is manufactured by a process including a laminate body formation step of applying a pattern alignment layer composition on a substrate to form a laminate body, a heat-drying layer formation step of heat-drying the composition to form a heat-dried layer, a pattern alignment layer formation step of irradiating a polarization pattern onto the heat-dried layer to form a pattern alignment layer, and a phase difference layer formation step of forming a phase difference layer including a rod-shaped compound on the pattern alignment layer. During the steps between the heat-drying layer formation step and the phase difference layer formation step, the heat-dried layer and the pattern alignment layer are exposed to the air for four hours or less.
    Type: Application
    Filed: October 1, 2012
    Publication date: September 18, 2014
    Inventors: Yuya Inomata, Kumiko Kambara, Masanori Fukuda, Hideki Usuki, Keiji Kashima, Kazuki Yamada
  • Publication number: 20140240582
    Abstract: According to the present invention, provided is a birefringent transfer foil, comprising a temporary support, an orientation layer, a birefringent layer (preferably a patterned optically anisotropic layer) formed from a composition comprising a liquid-crystal compound having at least one reactive group, said orientation layer being in contact with the temporary support or a releasing layer, wherein the releasing layer being in contact with the temporary support, and said orientation layer being a layer comprising a cellulose alkyl ether or a hydroxyalkyl derivative of cellulose alkyl ether. In the birefringent transfer foil of the present invention, the above orientation layer also functions as a protective layer and a detachment layer, enabling to reduce the manufacturing cost.
    Type: Application
    Filed: March 18, 2014
    Publication date: August 28, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Kazuhide HASEGAWA
  • Patent number: 8817199
    Abstract: A 3D display apparatus includes a display device, a liquid crystal panel, and a lens unit. The display device is configured to output polarized lights of one or more images with a first polarization direction. The liquid crystal panel is coupled to the display device and contains a plurality of pixel display areas to receive the polarized lights. The display areas can be individually controlled by corresponding active switches to a first state in which the first polarization direction is transformed into a second polarization direction or a second state in which the first polarization direction is maintained. Further, the lens unit is coupled to the liquid crystal panel and is configured to guide the polarized lights with the second polarization direction to pass through for 2D display and to guide polarized lights with the first polarization direction into predetermined transmitting directions for 3D display.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: August 26, 2014
    Assignee: Superd Co. Ltd.
    Inventors: Fuzhong Guo, Zhang Ge, Lei Song
  • Patent number: 8807755
    Abstract: The polarization beam splitting element is configured to reflect or transmit an entering beam according to its polarization direction. The element includes, in order from a beam entrance side, a base member having a light transmissive property, a first one-dimensional grating structure formed of a dielectric material and having, in a first direction, a first grating period smaller than a wavelength of the entering beam, and a second one-dimensional grating structure formed of a metal and having, in a second direction orthogonal to the first direction, a second grating period smaller than the wavelength of the entering beam.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Rie Ishimatsu
  • Patent number: 8797497
    Abstract: An unpolarized light beam phase modulator emitting in a given wavelength range comprises at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than its twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: August 5, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies
    Inventors: Umberto Rossini, Bruno Mourey
  • Publication number: 20140211130
    Abstract: A polarizing plate includes a polarizer, and a protective film on one side of the polarizer and including a reverse dispersion liquid crystal coating layer having ?/4 retardation. An optical display panel includes the polarizing plate. The polarizing plate has a depolarization function and allows for viewing of the display panel through polarizing sunglasses.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventor: Yong Woon Kim
  • Patent number: 8790544
    Abstract: It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: July 29, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Tadayuki Kameyama, Sadahiro Nakanishi, Toru Umemoto