Patents by Inventor Yujiro Yanai

Yujiro Yanai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180157068
    Abstract: Provided is a laminate including first and second patterned polarizers, a patterned optical anisotropic layer disposed between the first and second patterned polarizers, and an optically anisotropic layer disposed between the first patterned polarizer and the patterned optical anisotropic layer; in which an angle formed between an absorption axis of each of polarization regions of the second patterned polarizer and a slow axis of each of phase difference regions of the patterned optical anisotropic layer that is superposed on each of the polarization regions of the second patterned polarizer is 0°±5° or 90°±5°; an absolute value of Rth of the optically anisotropic layer is 50 to 150 nm; at least one of the first or second patterned polarizers is movable; and a white display state and a black display state are switched with each other. Also provided is a window.
    Type: Application
    Filed: January 30, 2018
    Publication date: June 7, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Akira YAMAMOTO
  • Publication number: 20180107106
    Abstract: A transparent screen for 3D display having excellent transparency and an excellent viewing angle, and a 3D display system are provided. The transparent screen for 3D display has a plurality of dots, each of the dots having wavelength selectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, in the portion, the angle formed by the normal line to a line that is formed by a first dark part as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°, and right-handed circularly polarized light and left-handed circularly polarized light are reflected by the plurality of dots.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Nobuhiko ICHIHARA, Yujiro YANAI, Akira YAMAMOTO, Michio NAGAI, Daisuke KASHIWAGI, Yukito SAITOH
  • Patent number: 9933619
    Abstract: The present invention provides a member for projection image display, including a reflection layer and a retardation layer, wherein the reflection layer includes a cholesteric liquid crystal layer exhibiting selective reflection in a visible light region, the cholesteric liquid crystal layer is a layer formed from a liquid crystal composition containing a discotic liquid crystal compound, and a front phase difference of the retardation layer is in a range of 50 nm to 400 nm; and a projection image display system which includes the above member for projection image display, wherein the retardation layer is disposed on an incident light side relative to the reflection layer, and the incident light is p-polarized light that vibrates in a direction parallel to a plane of incidence, which is capable of displaying a clear image having high reflectance and high transmittance, without a problem of a double image.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 3, 2018
    Assignee: FUJIFILM CORPORATION
    Inventors: Akiko Watano, Yujiro Yanai, Yukito Saitoh, Mitsuyoshi Ichihashi
  • Publication number: 20180074315
    Abstract: Provided is a member for displaying a projected image, including: a first base material; a second base material; and an optical member, in which at least one optical member is disposed on a surface of the first base material or the second base material, the optical member includes a plurality of cholesteric liquid crystal dots, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to a substrate, the dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the dot on a side opposite to the substrate and a line representing the surface of
    Type: Application
    Filed: November 21, 2017
    Publication date: March 15, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Akira YAMAMOTO, Michio NAGAI, Yukito SAITOH, Daisuke KASHIWAGI, Nobuhiko ICHIHARA
  • Publication number: 20180052264
    Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot, in the portion, is in the range of 70° to 90°, and a plurality of dot row units in which two or more dots are adjacently arranged along one direction are formed.
    Type: Application
    Filed: October 27, 2017
    Publication date: February 22, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Yukito SAITOH, Yujiro YANAI, Akira YAMAMOTO, Nobuhiko ICHIHARA, Daisuke KASHIWAGI, Michio NAGAI
  • Patent number: 9891467
    Abstract: A liquid crystal display device includes a backlight that emits unpolarized blue light, a reflective polarizing layer which is provided on an emission side of the backlight and converts blue light to linearly polarized light, a quantum rod layer which is provided on a blue linearly polarized light emission side of the reflective polarizing layer and converts blue linearly polarized light to red linearly polarized light and green linearly polarized light using multiple quantum rods, and a liquid crystal panel disposed on a red linearly polarized light and green linearly polarized light emission side. In the quantum rod layer, a polarization direction of the blue linearly polarized light emitted from the reflective polarizing layer and a long axis direction of the quantum rods are parallel to each other.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 13, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Yujiro Yanai, Yukito Saitoh
  • Publication number: 20180039013
    Abstract: Provided is a backlight unit capable of causing light that has exited from a light guide plate to be incident to a liquid crystal panel with high efficiency. The object is achieved by providing the backlight unit including a light source; a light guide plate that causes light to be incident to through an edge face and to exit through one of principal surfaces; and an optical film disposed on a surface of the light guide plate, the surface being on the opposite side of the light exiting surface, in which the optical film has a plurality of reflective polarizing elements each having a curved surface, and/or a plurality of reflective polarizing elements each having an inclined surface that is inclined with respect to the direction of light propagation of the light guide plate.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 8, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Yukito SAITOH, Shuntaro IBUKI, Jun TAKEDA
  • Publication number: 20170363791
    Abstract: The polarizing plate of the present invention includes a polarizer and an optical element that rotates a polarization plane of polarized light emitted from the polarizer, an orientation direction on a surface of the optical element on a polarizer side is parallel to an absorption axis of the polarizer, an orientation direction on a surface of the optical element opposite to the polarizer is perpendicular to the absorption axis of the polarizer, and ?nd and a birefringence parameter RH of the optical element fall in a range of a predetermined region in an orthogonal coordinate in which ?nd is indicated along a vertical axis and the birefringence parameter RH is indicated along a lateral axis.
    Type: Application
    Filed: August 30, 2017
    Publication date: December 21, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Junichi HIRAKATA, Yujiro YANAI, Yoshiaki HISAKADO, Kunihiro ATSUMI, Yukito SAITOH
  • Publication number: 20170343830
    Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, and in the portion, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°.
    Type: Application
    Filed: August 16, 2017
    Publication date: November 30, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Michio NAGAI, Yoji ITO, Akira YAMAMOTO, Yukito SAITOH, Yujiro YANAI, Daisuke KASHIWAGI, Nobuhiko ICHIHARA
  • Publication number: 20170336555
    Abstract: Provided is an optical member having a high brightness, a low haze, and a small color change, an optical element, a liquid crystal display device, and a near-to-eye optical member.
    Type: Application
    Filed: August 9, 2017
    Publication date: November 23, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Yukito SAITOH, Akira YAMAMOTO, Nobuhiko ICHIHARA, Daisuke KASHIWAGI, Michio NAGAI
  • Patent number: 9753198
    Abstract: The light emitting screen of the present invention includes: a blue light emitting layer emitting blue light by being excited with first excitation light; a green light emitting layer which is disposed on the blue light emitting layer and emits green light by being excited with second excitation light; a red light emitting layer which is disposed on the green light emitting layer and emits red light by being excited with third excitation light; a first selective reflection layer which is disposed between the blue light emitting layer and the green light emitting layer; and a second selective reflection layer which is disposed between the green light emitting layer and the red light emitting layer, wherein the blue light emitting layer, the green light emitting layer, and the red light emitting layer contain quantum rods or quantum dots.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: September 5, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Yujiro Yanai, Akiko Watano, Takashi Yonemoto
  • Patent number: 9671543
    Abstract: To reduce the crosstalk caused by the optical characteristic of the support film. A patterned retardation film comprising at least a support film (14) having optical anisotropy and a patterned retardation layer (12) disposed on the support film and having a first retardation region and a second retardation region, at least one of an in-plane slow axis direction and a retardation being different between the first and second retardation regions, wherein a variation in the in-plane slow axis direction of the support film is 3° or more.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 6, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Yuya Hamaguchi, Yujiro Yanai, Junichi Hirakata
  • Publication number: 20170123267
    Abstract: A liquid crystal display device includes a backlight that emits unpolarized blue light, a reflective polarizing layer which is provided on an emission side of the backlight and converts blue light to linearly polarized light, a quantum rod layer which is provided on a blue linearly polarized light emission side of the reflective polarizing layer and converts blue linearly polarized light to red linearly polarized light and green linearly polarized light using multiple quantum rods, and a liquid crystal panel disposed on a red linearly polarized light and green linearly polarized light emission side. In the quantum rod layer, a polarization direction of the blue linearly polarized light emitted from the reflective polarizing layer and a long axis direction of the quantum rods are parallel to each other.
    Type: Application
    Filed: December 22, 2016
    Publication date: May 4, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Yukito SAITOH
  • Publication number: 20170108726
    Abstract: Provided is a liquid crystal display device in which color reproducibility and brightness are improved. The liquid crystal display device includes a backlight that emits unpolarized blue light, a quantum rod layer which is provided on an emission side of the backlight and converts some of blue light to red linearly polarized light and green linearly polarized light using multiple quantum rods, a reflective polarizing layer which is provided on a side from which the red linearly polarized light and the green linearly polarized light of the quantum rod layer are emitted, and a liquid crystal panel disposed on a blue linearly polarized light emission side of the reflective polarizing layer, and a long axis direction of the quantum rods in the quantum rod layer and a polarization direction of the blue linearly polarized light emitted from the reflective polarizing layer are parallel to each other.
    Type: Application
    Filed: December 28, 2016
    Publication date: April 20, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Yukito SAITOH
  • Publication number: 20170102490
    Abstract: The present invention provides a light conversion film capable of suppressing a decrease in light emission efficiency even when the film is continuously irradiated with light and suppressing a change in degree of polarization even under a wet heat environment, a method for manufacturing the same, a laminate, and a method for manufacturing the same. The light conversion film of the present invention includes a polymer, and quantum rods, in which the quantum rods are aligned such that a major axis of each of the quantum rods is parallel to one direction parallel to a surface of the light conversion film, a moisture content is 1.0% or less, and an oxygen permeability coefficient is 200 cc·20 ?m/m2·day·atm or less.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Akiko WATANO, Toshio HARA, Hideaki ITO, Yukito SAITOH, Yujiro YANAI
  • Publication number: 20170075052
    Abstract: Provided is a wavelength conversion member, including: a wavelength conversion layer containing a quantum dot which is excited by excitation light and emits fluorescent light; and an adjacent layer directly laminated on the wavelength conversion layer, in which the shape of an interface between the wavelength conversion layer and the adjacent layer includes an irregular shape formed of a concave portion and a convex portion. Provided are a backlight unit, a polarizing plate, a liquid crystal panel, and a liquid crystal display device: including the wavelength conversion member.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 16, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Yukito SAITOH, Yujiro YANAI, Naoyoshi YAMADA, Takashi YONEMOTO
  • Patent number: 9535289
    Abstract: An aspect of the present invention relates to a brightness enhancement film, wherein a high refractive index layer and a low refractive index layer with an average refractive index that is lower than that of the high refractive index layer are directly laminated, and which includes a concavo-convex shape including concave portions and convex portions in an interface shape of an interface between the high refractive index layer and the low refractive layer, with the high refractive index layer including a lyotropic liquid-crystalline compound, and an outermost surface on the low refractive index layer side being a flat surface.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: January 3, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Yujiro Yanai, Hiroshi Sato
  • Publication number: 20160291225
    Abstract: The present invention provides a polarizing plate where, when the polarizing plate is applied to a liquid crystal display device, both thinning of the device and improvement in display performance such as prevention of light leakage, prevention of color variation, and suppression of display unevenness under a moist and hot environment can be achieved. The polarizing plate has, in this order, a first polarizer protective layer, a first polarizer, a first optically anisotropic layer including a liquid crystal compound X, and a second optically anisotropic layer including a liquid crystal compound Y, in which the thickness of the first optically anisotropic layer is 10 ?m or less, the first optically anisotropic layer has predetermined Re(550) and Rth(550), the thickness of the second optically anisotropic layer is 10 ?m or less, and has predetermined Re(550) and Rth(550), and the polarizing plate has a thickness of is 100 ?m or less.
    Type: Application
    Filed: June 9, 2016
    Publication date: October 6, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi SATO, Akira YAMAMOTO, Yujiro YANAI
  • Patent number: 9417480
    Abstract: A liquid crystal display device has at least: a first and a second polarizing layers arranged so that respective absorption axes thereof are orthogonal to each other; a first and a second substrates arranged opposite to each other between the first and second polarizing layers, at least either one of which has a transparent electrode; a twisted alignment mode liquid crystal cell arranged between the first and the second substrates; a first optical compensation film arranged between the first polarizing layer and the liquid crystal cell, including a first transparent support and a layer formed by curing a composition containing a first liquid crystal compound; and a second optical compensation film arranged between the second polarizing layer and the liquid crystal cell, including a second transparent support and a layer formed by curing a composition containing a second liquid crystal compound, as defined herein.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: August 16, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Hiroshi Sato, Yujiro Yanai, Megumi Sekiguchi, Akira Yamamoto
  • Patent number: 9383479
    Abstract: An optical film comprising a first domain of a polymer composition and a second domain disposed inside the first domain, wherein the second domain is a bubble having a morphology anisotropy, and the mean alignment direction of the main chain of the polymer molecule in the first domain differs from the mean direction of the major axis of the second domain, is capable of contributing toward display performance unification and body thickness reduction of an image display device.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: July 5, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Yujiro Yanai, Yasuyuki Sasada