Patents by Inventor Tokio Taguchi

Tokio Taguchi 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: 20190118504
    Abstract: The method for producing an optical member of the present invention includes: Process (1) of applying a first resin to a substrate; Process (2) of applying a second resin to at least one of the first resin and a die; Process (3) of pushing the substrate to the die with the first resin and the second resin in between to form a resin layer including on a surface thereof an uneven structure; and Process (4) of curing the resin layer to provide a polymer layer. The die includes a surface after release treatment with a fluorine release agent. The first resin contains a resin component, and the resin component contains predetermined amounts of a (meth)acrylamide compound and a urethane prepolymer containing six or more functional groups. The second resin contains predetermined amounts of a reactive group-containing monomer, a fluorosurfactant, and a fluorine-containing monomer.
    Type: Application
    Filed: March 6, 2017
    Publication date: April 25, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hidekazu HAYASHI, Tokio TAGUCHI, Kenichiro NAKAMATSU, Hisashi MARUYAMA, Nobuaki NAKAO, Suguru AOKI
  • Publication number: 20190080870
    Abstract: Provided are an electron emission device having a novel structure and being capable of improving characteristics and/or extending a lifetime of a related-art electron emission device, and a method of manufacturing the electron emission device.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: KENICHIRO NAKAMATSU, HIDEKAZU HAYASHI, TOKIO TAGUCHI, TADASHI IWAMATSU, KOHJI SHINKAWA, MAI TAKASAKI, TOSHIHIRO KANEKO, ATSUSHI NIINOH
  • Publication number: 20190016084
    Abstract: The present invention provides an optical member excellent in antifouling properties, rubbing resistance, and antifog properties. The optical member of the present invention includes, on a surface thereof, an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light, the projections each including a hydrophilic portion at its tip. Preferably, each of the projections is formed from a hydrophobic resin and has its tip covered with a hydrophilic material, the hydrophilic material contains silicon dioxide, and the hydrophilic material has a thickness of 30 nm or smaller.
    Type: Application
    Filed: December 21, 2016
    Publication date: January 17, 2019
    Inventors: HIDEKAZU HAYASHI, TOKIO TAGUCHI, NOBUAKI YAMADA
  • Patent number: 9862167
    Abstract: A laminated body includes: an antireflection film; and a protection film bonded onto the antireflection film. The adhesive layer is a layer with a material formed by cross-linking, with a cross-linking agent (B), and a (meth)acrylic acid ester copolymer. The (meth)acrylic acid ester copolymer (A) is a copolymer formed by polymerizing monomer components including, in relation to the total amount of the monomer components set at 100% by mass, 70 to 98% by mass of a (meth)acrylic acid alkyl ester monomer (a) including a noncyclic alkyl group containing 4 to 9 carbon atoms, 1.5 to 25% by mass of a (meth)acrylic acid ester monomer (b) containing an aliphatic ring, and 0.5 to 5% by mass of a (meth)acrylic-based monomer (c) containing a functional group exhibiting reactivity with the cross-linking agent (B). The area proportion of the components each having a molecular weight of 100,000 or less, is less than 3.0%.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: January 9, 2018
    Assignees: SHARP KABUSHIKI KAISHA, LINTEC CORPORATION
    Inventors: Tokio Taguchi, Atsushi Kurokawa, Takayuki Arai, Satoru Shoshi
  • Publication number: 20170320281
    Abstract: The present invention provides a method for producing an optical film excellent in anti-fouling properties and scratch resistance as well as anti-reflection properties. The method includes the steps of: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 9, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hidekazu HAYASHI, Tokio TAGUCHI, Atsushi NIINOH, Kenichiro NAKAMATSU
  • Patent number: 9812087
    Abstract: A display device in which an image with a wide color reproduction range and bright red can be displayed is provided. The display device is a display device such as, for example, a liquid crystal display device, a cathode ray tube, an organic electroluminescent display device, a plasma display panel, and a field emission display. The display device includes a display surface including a pixel having red, green, blue, and yellow sub-pixels, wherein the red sub-pixel preferably has the largest aperture area.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: November 7, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kozo Nakamura, Shun Ueki, Tokio Taguchi, Akiko Itou
  • Patent number: 9784889
    Abstract: An antireflection structure is disclosed which is capable of enhancing designability by adjusting a reflection characteristic of a Moth-eye structure. A display device using the antireflection structure is also disclosed. The antireflection structure according to an embodiment includes a resin base member including, on a surface, an uneven structure in which a height from a bottom part to a top part is equal to or smaller than a visible light wavelength, and a resin layer covering at least a part of the uneven structure, the resin layer covering the bottom part of the uneven structure more thickly than the top part of the uneven structure.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: October 10, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akiyoshi Fujii, Chiaki Minari, Tokio Taguchi, Nobuaki Yamada, Kiyoshi Minoura
  • Publication number: 20170066207
    Abstract: A method for producing an optical film includes: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.
    Type: Application
    Filed: February 10, 2016
    Publication date: March 9, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hidekazu HAYASHI, Tokio TAGUCHI, Nobuaki YAMADA, Yasuhiro SHIBAI, Atsushi NIINOH, Kenichiro NAKAMATSU
  • Patent number: 9445494
    Abstract: A display panel (100) of an embodiment of the present invention includes a wiring board (100a), a counter substrate (100b) which is provided on a viewer side of the wiring board (100a), and a display medium layer (32) which is provided between the wiring board (100a) and the counter substrate (100b), wherein the wiring board (100a) includes a substrate (11) and a plurality of metal wires (GB, SB, CSB, etc.) provided on the counter substrate (100b) side of the substrate (11), and at least part of the plurality of metal wires has a moth-eye structure or inverted moth-eye structure (12M) in its surface.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: September 13, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Chiaki Minari, Kiyoshi Minoura, Tokio Taguchi, Takao Imaoku
  • Patent number: 9429685
    Abstract: The laminate of an embodiment is a laminate including an antireflection film and a protection film bonded onto the antireflection film, wherein the surface of the antireflection film includes a plurality of protrusions; the protection film includes a supporting film and an adhesive layer; the adhesive layer includes an adhesive agent, a copolymer, and a carboxyl group-containing monomer; the weight average molecular weight of the copolymer is 1000000 or more and 2000000 or less; the copolymer includes the (meth)acrylic acid alkyl ester with the alkyl group having 4 or less carbon atoms in the largest weight proportion among the monomer components; the acid number of the copolymer is 16 mg KOH/g or more and 120 mg KOH/g or less; and the mixing amount of the epoxy cross-linking agent in relation to 100 parts by weight of the copolymer is 1.5 parts by weight or more.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: August 30, 2016
    Assignees: Sharp Kabushiki Kaisha, Soken Chemical & Engineering Co., Ltd.
    Inventors: Kiyoshi Minoura, Takao Imaoku, Tokio Taguchi, Seiichi Shimizu, Ryuta Ooka
  • Patent number: 9429686
    Abstract: A method for making a stamper which has an uneven surface pattern, in which unit structures are arranged in x and y directions at respective periods that are both shorter than the shortest wavelength of an incoming light ray, on the surface of a substrate and satisfies the following Inequality (1): ? ? ? x , y ? m ? ? i ? ? n < 1 ni + ni ยท sin ? ? ? ? ? i ma ? ? x ( 1 ) where ?min is the shortest wavelength of the incoming light ray, ?imax is the largest angle of incidence of the incoming light ray, ni is the refractive index of an incidence medium, ?x is the period of the uneven surface pattern in the x direction, and ?y is the period of the pattern in the y direction. As a result, diffraction of short-wave light components can be reduced in a broad wavelength range.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: August 30, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tokio Taguchi, Shun Ueki, Kozo Nakamura, Kazuhiko Tsuda
  • Patent number: 9416461
    Abstract: A mold includes an anodized porous alumina layer over its surface. The anodized porous alumina layer has a plurality of first and second recessed portions. The plurality of second recessed portions have a two-dimensional size of not less than 190 nm and not more than 50 ?m when viewed in a direction normal to the mold surface and have a plurality of minute recessed portions over its inner surface. The plurality of minute recessed portions have a two-dimensional size of not less than 10 nm and not more than 200 nm; and have a two-dimensional size of not less than 10 nm and not more than 200 nm. The plurality of first recessed portions are provided between the plurality of second recessed portions. The average value of the two-dimensional size of the plurality of second recessed portions is greater than that of the plurality of first recessed portions.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 16, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Chiaki Minari, Tokio Taguchi
  • Patent number: 9389340
    Abstract: Disclosed are: an optical film which has a moth eye structure; a method for producing the optical film; and a method for controlling the optical characteristics of the optical film. An embodiment discloses an optical film having a moth eye structure that includes a plurality of projections, wherein the plurality of projections include a plurality of slanted projections that are inclined to a film surface and the plurality of slanted projections are inclined in a generally same direction when the film surface is viewed in plan. Also disclosed is a method for producing an optical film having a moth eye structure, including applying a physical force to the moth eye structure. Further specifically disclosed is a method for controlling the optical characteristics of an optical film having a moth eye structure that includes a plurality of projections, the method including applying a physical force to the moth eye structure.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: July 12, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takao Imaoku, Tokio Taguchi
  • Patent number: 9158038
    Abstract: An antireflection film is provided in which a light scattering property is suppressed. The antireflection film includes, on a surface thereof, a moth-eye structure including a plurality of convex portions such that a width between vertices of adjacent convex portions is no greater than a wavelength of visible light.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: October 13, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tokio Taguchi, Takao Imaoku
  • Publication number: 20150241603
    Abstract: Disclosed are an anti-reflection structure, an imprint mold, methods for producing them and a display device capable of achieving appropriate visibility by forming regions different in reflection characteristics mixed in a film including a moth-eye structure, and sufficiently reducing reflection and sufficiently improving transmittance by the moth-eye structure. The anti-reflection structure includes a surface with an uneven structure composed of a transparent body and includes protrusions, the width between the tops of any pair of the adjacent protrusions being equal to or shorter than visible light wavelengths, the anti-reflection structure including a first region including a surface with the uneven structure, and a second region including a surface with a structure composed of a transparent body, the structure being different from the uneven structure and the second region in a plan view having a shape forming at least one selected from the group consisting of characters, symbols, and graphics.
    Type: Application
    Filed: June 14, 2013
    Publication date: August 27, 2015
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Akiyoshi Fujii, Tokio Taguchi
  • Publication number: 20150179140
    Abstract: A display device in which an image with a wide color reproduction range and bright red can be displayed is provided. The display device is a display device such as, for example, a liquid crystal display device, a cathode ray tube, an organic electroluminescent display device, a plasma display panel, and a field emission display. The display device includes a display surface including a pixel having red, green, blue, and yellow sub-pixels, wherein the red sub-pixel preferably has the largest aperture area.
    Type: Application
    Filed: March 5, 2015
    Publication date: June 25, 2015
    Inventors: Kozo NAKAMURA, Shun UEKI, Tokio TAGUCHI, Akiko ITOU
  • Publication number: 20150177420
    Abstract: An antireflection structure is disclosed which is capable of enhancing designability by adjusting a reflection characteristic of a Moth-eye structure. A display device using the antireflection structure is also disclosed. The antireflection structure according to an embodiment includes a resin base member including, on a surface, an uneven structure in which a height from a bottom part to a top part is equal to or smaller than a visible light wavelength, and a resin layer covering at least a part of the uneven structure, the resin layer covering the bottom part of the uneven structure more thickly than the top part of the uneven structure.
    Type: Application
    Filed: June 14, 2013
    Publication date: June 25, 2015
    Inventors: Akiyoshi Fujii, Chiaki Minari, Tokio Taguchi, Nobuaki Yamada, Kiyoshi Minoura
  • Patent number: 8994901
    Abstract: A display device in which an image with a wide color reproduction range and bright red can be displayed is provided. The display device is a display device such as, for example, a liquid crystal display device, a cathode ray tube, an organic electroluminescent display device, a plasma display panel, and a field emission display. The display device includes a display surface including a pixel having red, green, blue, and yellow sub-pixels, wherein the red sub-pixel preferably has the largest aperture area.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: March 31, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kozo Nakamura, Shun Ueki, Tokio Taguchi, Akiko Itou
  • Publication number: 20150049389
    Abstract: Disclosed is a display device capable of suppressing the occurrence of interference fringe in an oblique direction. A front sheet is disposed in front of a display panel with an air layer interposed therebetween. A film is disposed on the front surface of the display panel or on the rear surface of the front sheet. The air layer has a thickness of ?50 ?m. The display panel and/or the front sheet can be warped. The thickness of the air layer varies within a range of 0 ?m to 50 ?m. Further, the film includes a moth-eye structure on a surface contacting the air layer. Finally, a reflectance at at least one wavelength within a range of 600 to 780 nm is smaller than a reflectance at a wavelength of 550 nm in the reflection spectrum of 5-degree specular reflection of the moth-eye structure.
    Type: Application
    Filed: January 30, 2013
    Publication date: February 19, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kiyoshi Minoura, Chiaki Minari, Tokio Taguchi
  • Patent number: 8936839
    Abstract: The present invention provides a display panel with a flat plate in which a member partially provided with a light blocking part is disposed in front of a display panel, and a curable resin therebetween is sufficiently cured even in an area behind the light blocking part. The display panel with a flat plate of the present invention includes: a flat plate provided with a light passing part and a light blocking part; a display panel; and an adhesive layer between the flat plate and the display panel, the adhesive layer being a cured resin layer obtainable by polymerization involving at least one reactive component selected from the group consisting of a (meth)acrylate oligomer, a bicyclic ring-containing (meth)acrylate monomer, and a hydroxyl group-containing (meth)acrylate monomer, a peroxide component, and a primer as reaction materials.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 20, 2015
    Assignees: Sharp Kabushiki Kaisha, Kyoritsu Chemical & Co., Ltd.
    Inventors: Akiyoshi Fujii, Tokio Taguchi, Chiaki Minari, Takashi Yoshizawa, Katsuhisa Senda, Kenta Ishino, Eishi Katakami, Tsubasa Shiine