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).
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Patent number: 12099224Abstract: 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: GrantFiled: June 1, 2023Date of Patent: September 24, 2024Assignee: FUJIFILM CorporationInventors: Yuki Nakamura, Shuntaro Ibuki
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Patent number: 11988809Abstract: 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: GrantFiled: November 15, 2021Date of Patent: May 21, 2024Assignee: FUJIFILM CorporationInventors: Yuta Fukushima, Shuntaro Ibuki
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Patent number: 11874437Abstract: 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: GrantFiled: August 31, 2020Date of Patent: January 16, 2024Assignee: FUJIFILM CorporationInventors: Makoto Kamo, Shuntaro Ibuki
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Publication number: 20230305209Abstract: 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: ApplicationFiled: June 1, 2023Publication date: September 28, 2023Applicant: FUJIFILM CorporationInventors: Yuki NAKAMURA, Shuntaro IBUKI
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Publication number: 20230296820Abstract: 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: ApplicationFiled: May 23, 2023Publication date: September 21, 2023Applicant: FUJIFILM CorporationInventors: Yuki NAKAMURA, Shuntaro IBUKI
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Patent number: 11647169Abstract: 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: GrantFiled: September 12, 2022Date of Patent: May 9, 2023Assignee: FUJIFILM CorporationInventors: Shuntaro Ibuki, Naoya Nishimura
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Patent number: 11644604Abstract: 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: GrantFiled: September 13, 2018Date of Patent: May 9, 2023Assignee: FUJIFILM CorporationInventors: Ayako Matsumoto, Shuntaro Ibuki
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Publication number: 20230120853Abstract: 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: ApplicationFiled: December 1, 2022Publication date: April 20, 2023Applicant: FUJIFILM CorporationInventors: Naoya NISHIMURA, Takashi KATOU, Shuntaro IBUKI
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Publication number: 20230037337Abstract: 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: ApplicationFiled: September 12, 2022Publication date: February 9, 2023Applicant: FUJIFILM CorporationInventors: Shuntaro IBUKI, Naoya NISHIMURA
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Patent number: 11567238Abstract: 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: GrantFiled: September 9, 2019Date of Patent: January 31, 2023Assignee: FUJIFILM CorporationInventors: Ryuji Saneto, Shuntaro Ibuki, Shusuke Arita, Yuta Fukushima
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Patent number: 11306188Abstract: 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: GrantFiled: June 11, 2019Date of Patent: April 19, 2022Assignee: FUJIFILM CorporationInventors: Ayako Matsumoto, Shuntaro Ibuki, Chihiro Masuda
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Publication number: 20220075095Abstract: 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: ApplicationFiled: November 15, 2021Publication date: March 10, 2022Applicant: FUJIFILM CorporationInventors: Yuta FUKUSHIMA, Shuntaro IBUKI
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Patent number: 11209575Abstract: 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: GrantFiled: February 1, 2019Date of Patent: December 28, 2021Assignee: FUJIFILM CorporationInventors: Yuta Fukushima, Shuntaro Ibuki
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Patent number: 11194169Abstract: 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: GrantFiled: November 4, 2019Date of Patent: December 7, 2021Assignee: FUJIFILM CorporationInventors: Ryuji Saneto, Shuntaro Ibuki, Yoji Ito, Mitsuo Osato
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Patent number: 11097520Abstract: 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: GrantFiled: September 9, 2019Date of Patent: August 24, 2021Assignee: FUJIFILM CorporationInventors: Yuta Fukushima, Shuntaro Ibuki
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Publication number: 20200400862Abstract: 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: ApplicationFiled: August 31, 2020Publication date: December 24, 2020Applicant: FUJIFILM CorporationInventors: Makoto KAMO, Shuntaro IBUKI
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Patent number: 10718887Abstract: 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: GrantFiled: January 30, 2018Date of Patent: July 21, 2020Assignee: FUJIFILM CorporationInventors: Ayako Matsumoto, Daiki Wakizaka, Shuntaro Ibuki
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Patent number: 10585225Abstract: 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: GrantFiled: October 6, 2017Date of Patent: March 10, 2020Assignee: FUJIFILM CorporationInventors: Miho Asahi, Ayako Matsumoto, Shuntaro Ibuki, Shinya Watanabe, Hajime Nakayama, Naoya Shibata
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Publication number: 20200064647Abstract: 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: ApplicationFiled: November 4, 2019Publication date: February 27, 2020Applicant: FUJIFILM CorporationInventors: Ryuji SANETO, Shuntaro IBUKI, Yoji ITO, Mitsuo OSATO
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Publication number: 20190391296Abstract: 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: ApplicationFiled: September 9, 2019Publication date: December 26, 2019Applicant: FUJIFILM CorporationInventors: Yuta FUKUSHIMA, Shuntaro IBUKI