Patents by Inventor Akiko Sugino

Akiko Sugino 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: 11762248
    Abstract: The present invention provides a light control film, including: a first transparent substrate; a first transparent electrode layer; a light control layer which contains a liquid crystal compound, and which enables switching between a light transmitting state and a light scattering state in accordance with a voltage to be applied; a second transparent electrode layer; and a second transparent substrate in the stated order, wherein the first transparent substrate has a front retardation of 50 nm or less, wherein the second transparent substrate has a front retardation of 50 nm or less, and wherein the light control film has a total light transmittance of from 85% to 99% in the light transmitting state.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: September 19, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masanori Otsuka, Hiroyuki Takemoto, Mariko Hirai, Jin Yoshikawa, Akiko Sugino
  • Patent number: 11760077
    Abstract: Provided is a laminate that includes a thin glass film and is hence excellent in flexibility, and that is excellent in puncture resistance. A laminate for an image display apparatus of the present invention includes: a glass film; and a resin layer arranged on one side of the glass film, wherein the glass film has a thickness of more than 50 ?m and 150 ?m or less, wherein the laminate for an image display apparatus has a puncture strength measured in conformity with JIS Z 1707:1997 of more than 2 kg and 50 kg or less, and wherein the laminate for an image display apparatus has a bending radius of from 15 mm to 200 mm.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: September 19, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Akiko Sugino, Tetsuro Ikeda
  • Patent number: 11420413
    Abstract: The present invention provides a laminate of a void-containing layer and a pressure-sensitive adhesive/adhesive layer that achieves both a pressure-sensitive adhesive force or an adhesive force and a reduction of a tendency of a pressure-sensitive adhesive or an adhesive to penetrate into voids. The first laminate of the present invention includes: a void-containing layer (20); and a pressure-sensitive adhesive/adhesive layer (30), wherein the pressure-sensitive adhesive/adhesive layer (30) is directly laminated on one or both sides of the void-containing layer (20), the void-containing layer (20) has a void fraction of 35 vol % or more, and, after a heat/humidification durability test of holding at a temperature of 85° C. and a relative humidity of 85% for 500 hours, a void remaining ratio of the void-containing layer (20) is 50 vol % or more before the heat/humidification durability test.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 23, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Ryota Morishima, Atsushi Kishi, Akiko Sugino
  • Publication number: 20220066273
    Abstract: A light-modulation film (1) includes a light-modulation layer (30) and a catalyst layer (40) in this order on a polymer film substrate (10). A surface layer (70) may be disposed on the catalyst layer. The state of the light-modulation layer reversibly changes between a transparent state due to hydrogenation and a reflective state due to dehydrogenation. The catalyst layer promotes hydrogenation and dehydrogenation of the light-modulation layer. An arithmetic mean roughness of the surface of the catalyst layer is preferably 16 nm or less. A thickness of the light-modulation layer is preferably 2 to 20 times the thickness of the catalyst layer.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 3, 2022
    Applicants: NITTO DENKO CORPORATION, National Institute of Advanced Industrial Science and Technology
    Inventors: Kenta Watanabe, Nozomi Fujino, Hideyuki Yonezawa, Akiko Sugino, Yasusei Yamada, Kazuki Yoshimura
  • Patent number: 11231543
    Abstract: Provided is a light extraction member which can be obtained at an adequate cost, while achieving desired light output characteristics without requiring complicated design and structure, and which is easily combined with another member, while exhibiting excellent productivity and excellent handling properties. A light extraction member according to the present embodiment includes: a light guide part which has a first main surface being on the light output side and a second main surface being on the reverse side of the first main surface; and a light output control layer which is a predetermined pattern formed on the first main surface. With respect to this light extraction member, the refractive index n1 of the light guide part and the refractive index n2 of the light output control layer satisfy relational expression n1>n2; and the refractive index n2 of the light output control layer is from 1.01 to 1.30.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: January 25, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akiko Sugino, Kozo Nakamura, Daisuke Hattori
  • Publication number: 20220001652
    Abstract: Provided is a thin glass laminate, which is prevented from being broken by bending of a thin glass, and which is excellent in bending durability. The thin glass laminate of the present invention includes a resin film and a thin glass arranged at least on the resin film, wherein the thin glass has a thickness of from 30 ?m to 150 ?m, and wherein at least part of an end surface of the thin glass is formed of an inclined surface extending downward and outward and/or a curved surface. In one embodiment, at an upper end of the thin glass, at least part of the end surface is formed of the inclined surface extending downward and outward or the curved surface.
    Type: Application
    Filed: November 8, 2018
    Publication date: January 6, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Akiko Sugino, Atsushi Kishi
  • Publication number: 20210356812
    Abstract: An optical film set that can prevent the warping. The optical film set includes: a first optical film arranged on a viewer side of a liquid crystal cell; and a second optical film arranged on a back surface side of the liquid crystal cell, wherein the first optical film includes a first glass film, a first adhesion layer, and a first polarizing plate, which includes a first polarizer and a first protective film, in the stated order, wherein the first glass film has a thickness of from 50 ?m to 150 ?m, wherein the first protective film has a modulus of elasticity of 1 GPa or more, wherein the first adhesion layer has a thickness of 10 ?m or less, wherein the second optical film includes a second polarizing plate including a second polarizer, and wherein the second polarizer has a thickness of from 1 ?m to 10 ?m.
    Type: Application
    Filed: August 27, 2019
    Publication date: November 18, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Keisuke Sato, Akiko Sugino, Shoichi Kawamitsu, Atsushi Kishi
  • Patent number: 11143892
    Abstract: The present invention provides a light control element which has a light weight and high reliability and can easily be bonded to a glass surface or the like. The light control element of the present invention includes a glass film, a light control layer, a resin film, and a pressure-sensitive adhesive layer in the stated order, wherein the light control element has a bending radius of from 20 mm to 100 mm, and wherein the glass film has a thickness of from 50 ?m to 200 ?m.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 12, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akiko Sugino, Kenta Watanabe
  • Publication number: 20210231997
    Abstract: The present invention provides a light control film, including: a first transparent substrate; a first transparent electrode layer; a light control layer which contains a liquid crystal compound, and which enables switching between a light transmitting state and a light scattering state in accordance with a voltage to be applied; a second transparent electrode layer; and a second transparent substrate in the stated order, wherein the first transparent substrate has a front retardation of 50 nm or less, wherein the second transparent substrate has a front retardation of 50 nm or less, and wherein the light control film has a total light transmittance of from 85% to 99% in the light transmitting state.
    Type: Application
    Filed: April 12, 2019
    Publication date: July 29, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masanori Otsuka, Hiroyuki Takemoto, Mariko Hirai, Jin Yoshikawa, Akiko Sugino
  • Publication number: 20210178740
    Abstract: Provided is a laminate that includes a thin glass film and is hence excellent in flexibility, and that is excellent in puncture resistance. A laminate for an image display apparatus of the present invention includes: a glass film; and a resin layer arranged on one side of the glass film, wherein the glass film has a thickness of more than 50 ?m and 150 ?m or less, wherein the laminate for an image display apparatus has a puncture strength measured in conformity with JIS Z 1707:1997 of more than 2 kg and 50 kg or less, and wherein the laminate for an image display apparatus has a bending radius of from 15 mm to 200 mm.
    Type: Application
    Filed: October 25, 2018
    Publication date: June 17, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Akiko Sugino, Tetsuro Ikeda
  • Publication number: 20210026183
    Abstract: The present invention provides a light control element which has a light weight and high reliability and can easily be bonded to a glass surface or the like. The light control element of the present invention includes a glass film, a light control layer, a resin film, and a pressure-sensitive adhesive layer in the stated order, wherein the light control element has a bending radius of from 20 mm to 100 mm, and wherein the glass film has a thickness of from 50 ?m to 200 ?m.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 28, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akiko Sugino, Kenta Watanabe
  • Publication number: 20200401010
    Abstract: A gaschromic light-modulation element according to the present invention includes a light-modulation substrate having a light-modulation portion on one principal surface of a first transparent substrate; and a second transparent substrate which is arranged so as to face the light-modulation part of the light-modulation substrate. The light-modulation portion includes a light-modulation layer, the light transmittance of which is reversibly changed by hydrogenation and dehydrogenation. At least one of the first transparent substrate and the second transparent substrate is flexible. A plurality of dot-shaped spacers are arranged between the light-modulation part and the second transparent substrate. It is preferable that the number density of the spacers is 70 to 15000 pieces/m2.
    Type: Application
    Filed: March 12, 2019
    Publication date: December 24, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kenta Watanabe, Hiroyuki Takemoto, Akiko Sugino
  • Publication number: 20200292903
    Abstract: Provided are an electrochromic light adjusting member excellent in terms of low resistance and flexibility, a light transmitting electrically conductive glass film to be used for the electrochromic light adjusting member, and an electrochromic light adjusting element including the electrochromic light adjusting member. The electrochromic light adjusting member includes in this order: a glass film; a light transmitting electrically conductive layer; and an electrochromic light adjusting layer, wherein the light transmitting electrically conductive layer includes a first indium-based electrically conductive oxide layer, a metal layer, and a second indium-based electrically conductive oxide layer in the stated order from a glass film side.
    Type: Application
    Filed: August 31, 2018
    Publication date: September 17, 2020
    Inventors: Akiko SUGINO, Nozomi FUJINO, Kenta WATANABE, Takeshi MURASHIGE
  • Publication number: 20200239743
    Abstract: An optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting etc. on an adherend (an optical film) even when exposed to heating and humidification conditions; has excellent durability; can suppress surface unevenness due to light leakage; can suppress increases in adhering strength; and has excellent reworkability. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer that contains 3 to 25% by weight of an aromatic ring-containing monomer as a monomer unit and has a polydispersity (weight average molecular weight (Mw)/number average molecular weight (Mn)) of 3.0 or less, wherein the optical pressure-sensitive adhesive layer has an adhering strength of 11 N/25 mm or less to glass.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
  • Publication number: 20200223175
    Abstract: The present invention provides a laminate of a void-containing layer and a pressure-sensitive adhesive/adhesive layer that achieves both a pressure-sensitive adhesive force or an adhesive force and a reduction of a tendency of a pressure-sensitive adhesive or an adhesive to penetrate into voids. The first laminate of the present invention includes: a void-containing layer (20); and a pressure-sensitive adhesive/adhesive layer (30), wherein the pressure-sensitive adhesive/adhesive layer (30) is directly laminated on one or both sides of the void-containing layer (20), the void-containing layer (20) has a void fraction of 35 vol % or more, and, after a heat/humidification durability test of holding at a temperature of 85° C. and a relative humidity of 85% for 500 hours, a void remaining ratio of the void-containing layer (20) is 50 vol % or more before the heat/humidification durability test.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Ryota Morishima, Atsushi Kishi, Akiko Sugino
  • Publication number: 20200166694
    Abstract: Provided is a light extraction member which can be obtained at an adequate cost, while achieving desired light output characteristics without requiring complicated design and structure, and which is easily combined with another member, while exhibiting excellent productivity and excellent handling properties. A light extraction member according to the present embodiment includes: a light guide part which has a first main surface being on the light output side and a second main surface being on the reverse side of the first main surface; and a light output control layer which is a predetermined pattern formed on the first main surface. With respect to this light extraction member, the refractive index n1 of the light guide part and the refractive index n2 of the light output control layer satisfy relational expression n1>n2; and the refractive index n2 of the light output control layer is from 1.01 to 1.30.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Inventors: Akiko SUGINO, Kozo NAKAMURA, Daisuke HATTORI
  • Publication number: 20200032116
    Abstract: The purpose of the present invention is to provide a pressure-sensitive adhesive composition for a polarizing film from which a pressure-sensitive adhesive layer for a polarizing film can be obtained which can suppress separator peeling strength and can specifically suppress increases in separator peeling strength even when stored for a long period of time after production, and further has excellent durability (heat resistance) even when exposed to high temperature heating conditions and heating/humidifying conditions; and to provide a method for a pressure-sensitive adhesive layer for a polarizing film, the pressure-sensitive adhesive layer attached polarizing film polarizing film which includes the pressure-sensitive adhesive layer, and an image display device that includes the pressure-sensitive adhesive layer attached polarizing film.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 30, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
  • Publication number: 20200032113
    Abstract: The purpose of the present invention is to provide an optical pressure-sensitive adhesive layer which is excellent in durability such that foaming, peeling, etc. does not occur under heating/humidification conditions on an adherend and does not cause light leakage even in a narrow frame panel; a pressure-sensitive adhesive layer attached optical film, having the aforementioned optical pressure-sensitive adhesive layer on at least one surface of the optical film; and further a liquid crystal display device using the aforementioned pressure-sensitive adhesive layer attached optical film. 1. An optical pressure-sensitive adhesive layer which is formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein the optical pressure-sensitive adhesive layer has a gel fraction exceeding 90% and a weight average molecular weight (Mw) of 350,000 or more of a sol component.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 30, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
  • Publication number: 20200032114
    Abstract: The purpose of the present invention is to provide an optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting etc. on an adherend (an optical film) even when exposed to heating and humidification conditions; has excellent durability; can suppress surface unevenness due to light leakage; can suppress increases in adhering strength; and has excellent reworkability. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer that contains 3 to 25% by weight of an aromatic ring-containing monomer as a monomer unit and has a polydispersity (weight average molecular weight (Mw)/number average molecular weight (Mn)) of 3.0 or less, wherein the optical pressure-sensitive adhesive layer has an adhering strength of 11 N/25 mm or less to glass.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 30, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
  • Publication number: 20190225842
    Abstract: The purpose of the present invention is to provide: an optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting or the like on an adherend (an optical film) under heating and humidification conditions, and which has high adhesion reliability and excellent durability at high temperatures; a pressure-sensitive adhesive layer attached optical film, having the aforementioned optical pressure-sensitive adhesive layer on at least one surface of the optical film; and further a liquid crystal display device using the aforementioned pressure-sensitive adhesive layer attached optical film. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein the optical pressure-sensitive adhesive layer has a gel fraction of 70% or more and a creep value of 55 ?m or more when a load of 500 g is applied to the optical pressure-sensitive adhesive layer for 1 hour under an environment of 115° C.
    Type: Application
    Filed: September 27, 2017
    Publication date: July 25, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama