Patents by Inventor Megumi SEKIGUCHI

Megumi SEKIGUCHI 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: 20170017022
    Abstract: Disclosed is an optical conversion member, including an optical conversion layer containing quantum dot emitting fluorescent light and an anisotropic light scattering layer having I (0°)/I (40°) of 3 or greater, in which I (0°) indicates a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a normal direction of a surface of the anisotropic light scattering layer, and I (40°) indicates a transmission light intensity of the anisotropic light scattering layer in an azimuth in which a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a direction of a tilt angle of 40° with respect to the normal direction of the surface of the anisotropic light scattering layer becomes a minimum value.
    Type: Application
    Filed: September 28, 2016
    Publication date: January 19, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Takashi YONEMOTO, Yukito SAITOH, Megumi SEKIGUCHI
  • Patent number: 9459490
    Abstract: A polarizing plate includes: a polymer film; a polarizer; and a stress relaxation layer disposed between the polymer film and the polarizer, wherein a relationship of the following Expression (1) is satisfied, a thickness of the polymer film is equal to or greater than 10 ?m, a distance(Ds) from the surface of the polarizing plate on the side of the polymer film to the interface between the polymer film and the stress relaxation layer is equal to or greater than 15 ?m, a difference between the distance(Ds) and a thickness(C) of the polymer film is less than 15 ?m, and a total thickness of the polymer film and the stress relaxation layer is equal to or less than 80 ?m, 0.01<B/A<0.9 . . . (1), in Expression (1), A represents the elastic modulus of the polymer film, and B represents the elastic modulus of the stress relaxation layer.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: October 4, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Tatsuya Oba, Yoshitaka Maeda, Xiao Ling, Shun Inoue, Takahiro Ohno, Yohei Takahashi, Megumi Sekiguchi
  • Patent number: 9453952
    Abstract: A polarizing plate includes an outer protective film and a polarizer. The sum S of the product of the modulus of elasticity and the cube of the thickness in each layer is up to 150,000 Pa·mm3, and the value obtained by dividing the sum S by the Knoop hardness k of the outer protective film is 200 or more but up to 450. The polarizing plate is excellent in surface pencil hardness even when its thickness is reduced.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: September 27, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Takahiro Ohno, Tatsuya Oba, Yoshitaka Maeda, Xiao Ling, Shun Inoue, Megumi Sekiguchi, Yohei Takahashi
  • 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
  • Publication number: 20160209552
    Abstract: A polarizing plate includes, in the following order, a pressure sensitive adhesive layer, a polarizer, and an outer side layer provided on a visible side rather than the polarizer side, the thickness of the outer side layer is >3 ?m and ?45 ?m, the storage elastic modulus of the adhesive layer after lamination is 0.1 MPa to 2.0 MPa, and a hardness ratio (X/Y) is less than 1, when in measuring the hardness of the outer side layer in a depth direction at intervals of 1.5 ?m from surface A thereof to a surface B on the polarizer side, the absolute value of the difference between an n-th and n+1 measured hardness (where n is an integer of 1 or more) is defined as the hardness difference (X), and the absolute value of the difference between the hardness of surface A and surface B is hardness difference (Y).
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Ryo SATAKE, Megumi SEKIGUCHI
  • Publication number: 20160161800
    Abstract: An object of the present invention is to provide a polarizing plate having a surface with excellent pencil hardness and an image display device for which the polarizing plate is used. The polarizing plate of the present invention is a polarizing plate including an outer hardcoat layer, a polarizer, and an inner hardcoat layer in this order and forming an image display device when a display element is provided on a side opposite to a side of the inner hardcoat layer on which the polarizer is present, in which the inner hardcoat layer and the outer hardcoat layer satisfy a relationship of Expression (I) below, and a thickness is 80 ?m or smaller. Hin>Hout??Expression (I) Here, Hin represents a value of a thickness×a modulus of elasticity of the inner hardcoat layer, and Hout represents a value of a thickness×a modulus of elasticity of the outer hardcoat layer.
    Type: Application
    Filed: February 18, 2016
    Publication date: June 9, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Megumi SEKIGUCHI, Ryo SATAKE
  • Publication number: 20160048057
    Abstract: Provided is a liquid crystal display device including a liquid crystal cell having a liquid crystal layer between two glass substrates, a front-side polarizing plate provided on a front side of the liquid crystal cell, a rear polarizer provided on a rear side of the liquid crystal cell, and a backlight provided on a rear side of the rear polarizer, in which the front-side polarizing plate has a first protective film, a polarizer, and a second protective film in this order from a surface side opposite to the liquid crystal cell, the first protective film in the front-side polarizing plate is a film including a polyester resin or a polycarbonate resin as a main component, an Re of the first protective film is 3000 nm or higher, an equilibrium moisture content of the second protective film at 25° C. and a relative humidity of 60% is in a range of 1% to 3%, and in the second protective film, a contractile force in a direction orthogonal to an absorption axis of the polarizer is 1.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Megumi SEKIGUCHI, Hiromichi FURUKAWA, Naoyoshi YAMADA
  • Patent number: 9229263
    Abstract: A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 ?m and 3 ?m and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 ?m and 10 ?m, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 5, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Megumi Sekiguchi, Shinichi Morishima, Takashi Yonemoto, Hiroshi Sato, Taketo Otani
  • Publication number: 20150378073
    Abstract: A polarizing plate includes an outer protective film and a polarizer. The sum S of the product of the modulus of elasticity and the cube of the thickness in each layer is up to 150,000 Pa·mm3, and the value obtained by dividing the sum S by the Knoop hardness k of the outer protective film is 200 or more but up to 450. The polarizing plate is excellent in surface pencil hardness even when its thickness is reduced.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 31, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Takahiro OHNO, Tatsuya OBA, Yoshitaka MAEDA, Xiao LING, Shun INOUE, Megumi SEKIGUCHI, Yohei TAKAHASHI
  • Publication number: 20150301403
    Abstract: A polarizing plate includes: a polymer film; a polarizer; and a stress relaxation layer disposed between the polymer film and the polarizer, wherein a relationship of the following Expression (1) is satisfied, a thickness of the polymer film is equal to or greater than 10 ?m, a distance(Ds) from the surface of the polarizing plate on the side of the polymer film to the interface between the polymer film and the stress relaxation layer is equal to or greater than 15 ?m, a difference between the distance(Ds) and a thickness(C) of the polymer film is less than 15 ?m, and a total thickness of the polymer film and the stress relaxation layer is equal to or less than 80 ?m, 0.01<B/A<0.9 . . . (1), in Expression (1), A represents the elastic modulus of the polymer film, and B represents the elastic modulus of the stress relaxation layer.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 22, 2015
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya OBA, Yoshitaka MAEDA, Xiao LING, Shun INOUE, Takahiro OHNO, Yohei TAKAHASHI, Megumi SEKIGUCHI
  • Publication number: 20150212368
    Abstract: There is provided a liquid crystal display including: a liquid crystal cell in which a liquid crystal layer is installed between two glass substrates; polarizing plates on both surfaces of the liquid crystal cell; and a backlight at a rear side of the liquid crystal cell, which is a non-visual side, wherein in a polarizing plate at a front side of the liquid crystal cell, which is a visual side, a difference in a moisture content of the polarizing plate at the front side under a specific condition in elapse of time is 0.01% or more and 3.0% or less.
    Type: Application
    Filed: April 10, 2015
    Publication date: July 30, 2015
    Applicant: FUJIFILM Corporation
    Inventors: Takashi YONEMOTO, Hiromichi FURUKAWA, Takahiro OHNO, Megumi SEKIGUCHI, Mitsuo OSATO, Kenichi FUKUDA, Daiki WAKIZAKA
  • Patent number: 9000309
    Abstract: An electromagnetic shielding film comprises a conductive portion and an opening portion, and a moire preventing part is formed in the opening portion. The moire preventing part may be formed approximately at the center of the opening portion, and may be formed on a line connecting intersections facing each other in the conductive portion in the mesh pattern. The moire preventing part may have a substantially circular planar shape or a polygonal planar shape (such as a quadrangular, pentagonal, hexagonal, or octagonal shape). Of course the moire preventing part may have an at least partially curved planar shape. The electromagnetic shielding film preferably satisfies the inequality 0.1Sa?Sb?5.0Sa, in which Sa is the area of the intersection of the conductive portion and Sb is the area of the moire preventing part.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: April 7, 2015
    Assignee: Fujifilm Corporation
    Inventors: Ryuji Saneto, Megumi Sekiguchi, Hiroshi Ishizuka
  • Publication number: 20140333872
    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: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Hiroshi SATO, Yujiro YANAI, Megumi SEKIGUCHI, Akira YAMAMOTO
  • Publication number: 20140333874
    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: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi SATO, Yujiro YANAI, Megumi SEKIGUCHI, Akira YAMAMOTO
  • Publication number: 20140184992
    Abstract: A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 ?m and 3 ?m and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 3, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Megumi SEKIGUCHI, Shinichi MORISHIMA, Takashi YONEMOTO, Hiroshi SATO, Taketo OTANI
  • Publication number: 20130321723
    Abstract: Provided are a barrier element and a 3D display apparatus including the element that allows 2D display with high brightness without a change in tint of white portions and allows 3D display with reduced crosstalk. A barrier element to be disposed at the front or the rear of an image display device and capable of forming a barrier pattern including light transmitting portions and light shielding portions, the barrier element including a first polarization controlling element; a liquid crystal cell; and at least one retardation film disposed between the first polarization controlling element and one face of the liquid crystal cell and/or disposed in the other face of the liquid crystal cell and having a retardation in-plane Re(550) of ?30 to 100 nm at a wavelength of 550 nm and a retardation in the thickness direction Rth(550) of ?15 to 180 nm at a wavelength of 550 nm.
    Type: Application
    Filed: August 13, 2013
    Publication date: December 5, 2013
    Applicant: FUJIFILM Corporation
    Inventors: Makoto ISHIGURO, Hiroshi SATO, Megumi SEKIGUCHI
  • Publication number: 20130308078
    Abstract: Provide is a 3D display device and a 3D display system having reduced crosstalk and reduced color shift generating in a diagonal direction during white display. A 3D display device comprising: a liquid crystal cell for image display; a first polarizing film and a polarization-converting liquid crystal cell in this order in front of the liquid crystal cell for image display; at least one retardation layer between the polarization-converting liquid crystal cell and the first polarizing film and/or in front of the polarization-converting liquid crystal cell, the at least one retardation layer comprising a polymer film or consisting of a polymer film, wherein the polymer films have a retardation Re (550) in plane at a wavelength of 550 nm of ?30 to 100 nm and a retardation Rth (550) in the thickness direction at a wavelength of 550 nm of 50 to 180 nm.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi SATO, Takashi YONEMOTO, Megumi SEKIGUCHI
  • Patent number: 8426749
    Abstract: An electromagnetic shielding film comprises a conductive portion and an opening portion, and a moire preventing part is formed in the opening portion. The moire preventing part may be formed approximately at the center of the opening portion, and may be formed on a line connecting intersections facing each other in the conductive portion in the mesh pattern. The moire preventing part may have a substantially circular planar shape or a polygonal planar shape (such as a quadrangular, pentagonal, hexagonal, or octagonal shape). Of course the moire preventing part may have an at least partially curved planar shape. The electromagnetic shielding film preferably satisfies the inequality 0.1 Sa?Sb?5.0 Sa, in which Sa is the area of the intersection of the conductive portion and Sb is the area of the moire preventing part.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 23, 2013
    Assignee: Fujifilm Corporation
    Inventors: Ryuji Saneto, Megumi Sekiguchi, Hiroshi Ishizuka
  • Publication number: 20120175164
    Abstract: An electromagnetic shielding film comprises a conductive portion and an opening portion, and a moire preventing part is formed in the opening portion. The moire preventing part may be formed approximately at the center of the opening portion, and may be formed on a line connecting intersections facing each other in the conductive portion in the mesh pattern. The moire preventing part may have a substantially circular planar shape or a polygonal planar shape (such as a quadrangular, pentagonal, hexagonal, or octagonal shape). Of course the moire preventing part may have an at least partially curved planar shape. The electromagnetic shielding film preferably satisfies the inequality 0.1Sa?Sb?5.0Sa, in which Sa is the area of the intersection of the conductive portion and Sb is the area of the moire preventing part.
    Type: Application
    Filed: March 19, 2012
    Publication date: July 12, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Ryuji SANETO, Megumi SEKIGUCHI, Hiroshi ISHIZUKA
  • Publication number: 20110311738
    Abstract: A process of producing a cellulose acylate film is disclosed. The process comprises a forming step of forming a web of a fluid, comprising a cellulose acylate, aromatic group-containing oligomer and solvent, by casting the fluid onto a support, a stretching step of stretching the web, thereby to align molecules of the aromatic group-containing oligomer along the stretching direction, and a heat-treatment step of subjecting the stretched web to a heat treatment, thereby to at least increase the alignment degree of molecules of the aromatic group-containing oligomer.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 22, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki Nimura, Ryo Nakamura, Hiroko Kamee, Kentaro Toyooka, Hiroshi Sato, Megumi Sekiguchi, Yukito Saitoh, Akira Yamamoto, Michio Nagai