Patents by Inventor Shuntaro Ibuki

Shuntaro Ibuki 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).

  • Patent number: 12099224
    Abstract: An optical laminate includes two optically anisotropic layers, an A-plate and a C-plate, in which the adhesiveness between the layers, the liquid crystal alignment of the C-plate, and the adhesiveness between the A-plate and a pressure-sensitive adhesive, are excellent. The optical laminate includes first and second optically anisotropic layers which are A-plate and C-plate formed of a first and second liquid crystal compound, respectively, and a mixed layer disposed between the layers, including components derived from the first and second liquid crystal compounds, and an optical alignment compound, in which a surface energy of the first optically anisotropic layer on a side opposite to the mixed layer is 25 mN/m or more, and where a component in a depth direction is analyzed with time-of-flight type secondary ion mass spectrometry while irradiating ion beams from a surface of the optical laminate on the first, toward the second, optically anisotropic layer.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: September 24, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yuki Nakamura, Shuntaro Ibuki
  • Patent number: 11988809
    Abstract: Provided are a laminate including: a glass substrate; a layer (ca) including a binder; a particle (a2) having an average primary particle diameter of 100 nm to 380 nm; and a layer (b) including a pressure sensitive adhesive, in which the layer (ca) is present on a side closer to the glass substrate than the layer (b), and the particle (a2) is buried in layers obtained by combining the layer (ca) and the layer (b) and protrudes from an interface of the layer (ca) on a side opposite to an interface of the layer (ca) on the glass substrate side, an antireflection product using the laminate, and a method of manufacturing the laminate and an antireflection product.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: May 21, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yuta Fukushima, Shuntaro Ibuki
  • Patent number: 11874437
    Abstract: A black structure includes a black layer and a light transmitting portion in a same plane, in which the black layer has a fine uneven structure having a period of 380 nm or less on a surface of the black layer on the viewing side, and a surface of the black layer opposite to the surface having the fine uneven structure is bonded to a base material. A self-luminous image display device includes a self-luminous image display panel and the black structure.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: January 16, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Makoto Kamo, Shuntaro Ibuki
  • Publication number: 20230305209
    Abstract: An optical laminate includes two optically anisotropic layers, an A-plate and a C-plate, in which the adhesiveness between the layers, the liquid crystal alignment of the C-plate, and the adhesiveness between the A-plate and a pressure-sensitive adhesive, are excellent. The optical laminate includes first and second optically anisotropic layers which are A-plate and C-plate formed of a first and second liquid crystal compound, respectively, and a mixed layer disposed between the layers, including components derived from the first and second liquid crystal compounds, and an optical alignment compound, in which a surface energy of the first optically anisotropic layer on a side opposite to the mixed layer is 25 mN/m or more, and where a component in a depth direction is analyzed with time-of-flight type secondary ion mass spectrometry while irradiating ion beams from a surface of the optical laminate on the first, toward the second, optically anisotropic layer.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yuki NAKAMURA, Shuntaro IBUKI
  • Publication number: 20230296820
    Abstract: Provided is a polarizing plate having an excellent adhesiveness between a polarizer and an optical film and having good durability; and an image display device having the same. The polarizing plate includes a polarizer, an adhesive layer, and an optical film exhibiting reverse wavelength dispersibility, adjacent to each other in this order, in which the adhesive layer is a layer formed of an adhesive composition containing a polymerizable compound and a polymerization initiator, and the polarizing plate satisfies Condition 1: a maximum absorption wavelength of the polymerization initiator is within ±70 nm of a minimum absorption wavelength of the optical film and Condition 2: a molar absorption coefficient of the polymerization initiator is 22,000 mol?1Lcm?1 or more.
    Type: Application
    Filed: May 23, 2023
    Publication date: September 21, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yuki NAKAMURA, Shuntaro IBUKI
  • Patent number: 11647169
    Abstract: Provided is a reflective screen and a projection image display system in which a transmittance of light can be selectively changed, a transmittance in a transparent state is sufficiently high, a voltage does not need to be applied constantly, and a voltage is applied to decrease a transmittance of light in a case where the reflective screen is irradiated with video light.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: May 9, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Shuntaro Ibuki, Naoya Nishimura
  • Patent number: 11644604
    Abstract: Provided are an optical film including a base material, and a hard coat layer, in which a refractive index of the base material at a wavelength of 550 nm is 1.60 or more, a difference between a refractive index of the base material at a wavelength of 435 nm and a refractive index of the base material at a wavelength of 610 nm is 0.11 or more, and a peak intensity PV value of a power spectrum obtained by subjecting a reflectivity spectrum of the optical film to fast Fourier transform is 0.3 or less, a polarizing plate having the optical film and an image display device.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: May 9, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Ayako Matsumoto, Shuntaro Ibuki
  • Publication number: 20230120853
    Abstract: Provided is an optical film capable of neutralizing both the tint as viewed in a transmittance central axis direction and the tint as viewed in a direction inclined from a transmittance central axis, and an optical laminate and an image display device formed of this optical film.
    Type: Application
    Filed: December 1, 2022
    Publication date: April 20, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Naoya NISHIMURA, Takashi KATOU, Shuntaro IBUKI
  • Publication number: 20230037337
    Abstract: Provided is a reflective screen and a projection image display system in which a transmittance of light can be selectively changed, a transmittance in a transparent state is sufficiently high, a voltage does not need to be applied constantly, and a voltage is applied to decrease a transmittance of light in a case where the reflective screen is irradiated with video light.
    Type: Application
    Filed: September 12, 2022
    Publication date: February 9, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Shuntaro IBUKI, Naoya NISHIMURA
  • Patent number: 11567238
    Abstract: A laminate includes a substrate; and a layer (a) containing particles forming a specific uneven shape, the number of particles present on the surface of the layer (a) is 6.3 to 20 per 1 ?m2, and a heat shrinkage rate of the laminate in a case of being heated for one hour at a glass transition temperature of the substrate+10° C. is 20% or more and less than 70%. An antireflection product has a three-dimensional curved surface having a curvature radius of 1 to 1,000 mm, and has a specific uneven shape formed of particles on the three-dimensional curved surface, the number of metal oxide particles present on the three-dimensional curved surface is 9 to 40 per 1 ?m2, and a difference between a maximum value and a minimum value of reflectivities is less than 1.2%.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 31, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Ryuji Saneto, Shuntaro Ibuki, Shusuke Arita, Yuta Fukushima
  • Patent number: 11306188
    Abstract: An optical film has a base material and a hardcoat layer, in which a pencil hardness is 2H or higher, the number of times of folding endurance measured by an MIT tester is 1000 or more, an incident ray is made incident on the optical film from ?60° with respect to a normal direction of the optical film, an angle width within which 10% of outgoing ray peak intensity is obtained is 6° or less, and an intensity of outgoing ray at 50° from the normal direction is 1% or less of the outgoing ray peak intensity. A method for manufacturing an optical film has a step of applying a hardcoat layer forming composition to a base material to provide a coating film, and a step of curing the coating film while bringing the coating film into contact with one smooth metal roll.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: April 19, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Ayako Matsumoto, Shuntaro Ibuki, Chihiro Masuda
  • Publication number: 20220075095
    Abstract: Provided are a laminate including: a glass substrate; a layer (ca) including a binder; a particle (a2) having an average primary particle diameter of 100 nm to 380 nm; and a layer (b) including a pressure sensitive adhesive, in which the layer (ca) is present on a side closer to the glass substrate than the layer (b), and the particle (a2) is buried in layers obtained by combining the layer (ca) and the layer (b) and protrudes from an interface of the layer (ca) on a side opposite to an interface of the layer (ca) on the glass substrate side, an antireflection product using the laminate, and a method of manufacturing the laminate and an antireflection product.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Applicant: FUJIFILM Corporation
    Inventors: Yuta FUKUSHIMA, Shuntaro IBUKI
  • Patent number: 11209575
    Abstract: Provided are a laminate including: a glass substrate; a layer (ca) including a binder; a particle (a2) having an average primary particle diameter of 100 nm to 380 nm; and a layer (b) including a pressure sensitive adhesive, in which the layer (ca) is present on a side closer to the glass substrate than the layer (b), and the particle (a2) is buried in layers obtained by combining the layer (ca) and the layer (b) and protrudes from an interface of the layer (ca) on a side opposite to an interface of the layer (ca) on the glass substrate side, an antireflection product using the laminate, and a method of manufacturing the laminate and an antireflection product.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 28, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yuta Fukushima, Shuntaro Ibuki
  • Patent number: 11194169
    Abstract: A light diffraction film includes a transparent substrate; and a light diffraction layer containing a binder resin and particles, in which an average primary particle diameter of the particles is 1 ?m to 10 ?m, and a coverage of a surface of the transparent substrate covered with the particles is 70% to 90%.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: December 7, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Ryuji Saneto, Shuntaro Ibuki, Yoji Ito, Mitsuo Osato
  • Patent number: 11097520
    Abstract: A laminate includes a support, a layer (b) including a pressure sensitive adhesive, particles (a2) having an average primary particle diameter of 100 nm to 380 nm, and a layer (ca) including a resin, in which the layer (b) is provided closer to the support than the layer (ca), the particles (a2) are buried in a layer obtained by combining the layer (b) and the layer (ca) and protrudes from an interface of the layer (ca) on the support side, and a portion including the particles (a2) and the layer (ca) is peelable from the layer (b).
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: August 24, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yuta Fukushima, Shuntaro Ibuki
  • Publication number: 20200400862
    Abstract: A black structure includes a black layer and a light transmitting portion in a same plane, in which the black layer has a fine uneven structure having a period of 380 nm or less on a surface of the black layer on the viewing side, and a surface of the black layer opposite to the surface having the fine uneven structure is bonded to a base material. A self-luminous image display device includes a self-luminous image display panel and the black structure.
    Type: Application
    Filed: August 31, 2020
    Publication date: December 24, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Makoto KAMO, Shuntaro IBUKI
  • Patent number: 10718887
    Abstract: The present invention provides a method of manufacturing an antireflection film, including the successive steps of: applying a composition including a curable compound (a1), a plurality of particles (a2), and a solvent on a substrate, and volatilizing the solvent to provide a layer (a), the layer (a) having a portion in which the particles (a2) do not exist, and the portion having a thickness being 0.8 times the average primary particle diameter of the particles (a2) or greater; curing a portion of the curable compound (a1); causing a portion of the curable compound (a1) to permeate the substrate or to be volatilized so as to form an uneven shape; and curing the curable compound (a1) remained in the layer (a).
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: July 21, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Ayako Matsumoto, Daiki Wakizaka, Shuntaro Ibuki
  • Patent number: 10585225
    Abstract: A transparent film includes: a base material; and at least one scratch resistant layer of which indentation hardness is 300 MPa or greater and of which a thickness is 50 to 1,000 nm on an outermost surface of the transparent film at one side or both sides of the base material, and a number of times of folding endurance of the transparent film measured by an MIT testing machine according to JIS P8115 (2001) is 1,000 times or greater.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: March 10, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Miho Asahi, Ayako Matsumoto, Shuntaro Ibuki, Shinya Watanabe, Hajime Nakayama, Naoya Shibata
  • Publication number: 20200064647
    Abstract: A light diffraction film includes a transparent substrate; and a light diffraction layer containing a binder resin and particles, in which an average primary particle diameter of the particles is 1 ?m to 10 ?m, and a coverage of a surface of the transparent substrate covered with the particles is 70% to 90%.
    Type: Application
    Filed: November 4, 2019
    Publication date: February 27, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Ryuji SANETO, Shuntaro IBUKI, Yoji ITO, Mitsuo OSATO
  • Publication number: 20190391296
    Abstract: A laminate includes a support, a layer (b) including a pressure sensitive adhesive, particles (a2) having an average primary particle diameter of 100 nm to 380 nm, and a layer (ca) including a resin, in which the layer (b) is provided closer to the support than the layer (ca), the particles (a2) are buried in a layer obtained by combining the layer (b) and the layer (ca) and protrudes from an interface of the layer (ca) on the support side, and a portion including the particles (a2) and the layer (ca) is peelable from the layer (b).
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yuta FUKUSHIMA, Shuntaro IBUKI