Patents by Inventor Kenji Yanagisawa

Kenji Yanagisawa 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: 11372175
    Abstract: An optical module includes a wiring board having a first electrode, an optical waveguide provided on the wiring board, an optical element having a second electrode and provided on the optical waveguide, a conductive bonding material bonding the first and second electrodes, and a fixing member that fixes the optical element to the optical waveguide. The optical waveguide includes a core layer, a first cladding layer provided on a first side of the core layer, a second cladding layer provided on a second side of the core layer opposite to the first side, and an optical path conversion mirror provided on the core layer or the second cladding layer. The optical element is optically coupled to one end of the core layer via the optical path conversion mirror, and a softening point of the fixing member is higher than a melting point of the conductive bonding material.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: June 28, 2022
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventors: Kenji Yanagisawa, Koichi Toya
  • Publication number: 20220157900
    Abstract: According to one embodiment, a display device includes a base, a first insulating layer, a first pixel electrode on the first insulating layer in a pixel, a second pixel electrode on the first insulating layer in a dummy pixel, a second insulating layer on the first insulating layer, a first organic layer in the pixel and in contact with the first pixel electrode, a second organic layer in the dummy pixel, a partition wall on the second insulating layer and between the organic layers and a common electrode covering the organic layers and the partition wall. An end portion of the first organic layer is in contact with a side surface of the partition wall.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventors: Sho YANAGISAWA, Tetsuo MORITA, Kenji HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI
  • Publication number: 20220157899
    Abstract: According to one embodiment, a display device includes a substrate, first and second insulating layers, first and second pixel electrodes, first and second organic layers, first and second feed lines, first and second partitions, and a common electrode including first and second parts covering the first and second organic layers. The first organic layer is between the partitions. The second feed line and the second partition are located between the organic layers. The partitions are shaped such that a width of an upper part is greater than a width of a lower part. The first part is in contact with the first feed line between the first partition and the first organic layer.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventors: Sho YANAGISAWA, Tetsuo MORITA, Kenji HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI
  • Publication number: 20210345849
    Abstract: A charging base (400) includes: a base seat (401) installed on a floor surface; a columnar tower part (402) provided on the base seat (401); a first support (403) provided on the tower part (402) and capable of supporting a vertical first electric vacuum cleaner (100); and a second support (404) provided on the tower part (402) and capable of supporting a vertical second electric vacuum cleaner (200). An electric vacuum cleaner system 1 includes the charging base (400) configured as described above, the vertical first electric vacuum cleaner (100), and the vertical second electric vacuum cleaner (200).
    Type: Application
    Filed: October 30, 2018
    Publication date: November 11, 2021
    Inventors: Koshiro TAKANO, Eigo SHIMIZU, Yumi KUROKAWA, Shigeyuki NAGATA, Eunjin CHOI, Isamu OKUDA, Tsutomu MATSUBARA, Takenori SEKIGUCHI, Hiroaki ITO, Kenji YANAGISAWA
  • Publication number: 20210333493
    Abstract: An optical waveguide substrate includes: a substrate; a clad disposed on a plane of the substrate and made of a transparent material; and a plurality of cores that are surrounded by the clad, extend in parallel with the plane of the substrate and are made of a transparent material having a refractive index different from a refractive index of the clad, the cores including at least a pair of cores with diameters different from each other. The cores are provided at positions where centers of sections of the cores are all positioned in a straight line.
    Type: Application
    Filed: April 15, 2021
    Publication date: October 28, 2021
    Inventor: Kenji Yanagisawa
  • Patent number: 11125954
    Abstract: An optical waveguide includes a first clad layer, core layers each formed on the first clad layer, a second clad layer formed on the first clad layer to cover the core layers, grooves each provided corresponding to one of the core layers. The optical waveguide further includes inclined surfaces each disposed in the corresponding groove to face an end surface of the corresponding core layer in an extension direction of the core layers. Each inclined surface is inclined with respect to the extension direction of the core layers. The optical waveguide further includes optical path changing mirrors each formed on the corresponding inclined surface. The grooves are physically separate from each other. Each inclined surface is formed in only the first and second clad layers. Each optical path changing mirror is not in contact with the core layers and is physically separate from the core layers.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: September 21, 2021
    Assignee: Shinko Electric Industries Co., LTD.
    Inventor: Kenji Yanagisawa
  • Publication number: 20210173159
    Abstract: An optical module includes a wiring board having a first electrode, an optical waveguide provided on the wiring board, an optical element having a second electrode and provided on the optical waveguide, a conductive bonding material bonding the first and second electrodes, and a fixing member that fixes the optical element to the optical waveguide. The optical waveguide includes a core layer, a first cladding layer provided on a first side of the core layer, a second cladding layer provided on a second side of the core layer opposite to the first side, and an optical path conversion mirror provided on the core layer or the second cladding layer. The optical element is optically coupled to one end of the core layer via the optical path conversion mirror, and a softening point of the fixing member is higher than a melting point of the conductive bonding material.
    Type: Application
    Filed: November 18, 2020
    Publication date: June 10, 2021
    Inventors: Kenji YANAGISAWA, Koichi TOYA
  • Publication number: 20210141151
    Abstract: An optical waveguide is formed on a support member. A second cladding layer is formed on a surface of a first cladding layer so as to cover a core layer. An opening is opened at the second cladding layer-side, penetrates the second cladding layer and the core layer, and closed at the first cladding layer-side. The opening has a first surface and a second surface ranging from the opened side to the closed side. In a vertical section taken along a longitudinal direction of the core layer, a first angle between a perpendicular line drawn from an opening end of the first surface to the surface of the first cladding layer and the first surface, and a second angle between a perpendicular line drawn from an opening end of the second surface to the surface of the first cladding layer and the second surface are all acute angles.
    Type: Application
    Filed: January 22, 2021
    Publication date: May 13, 2021
    Inventor: Kenji Yanagisawa
  • Patent number: 10935719
    Abstract: An optical waveguide is formed on a support member. A second cladding layer is formed on a surface of a first cladding layer so as to cover a core layer. An opening is opened at the second cladding layer-side, penetrates the second cladding layer and the core layer, and closed at the first cladding layer-side. The opening has a first surface and a second surface ranging from the opened side to the closed side. In a vertical section taken along a longitudinal direction of the core layer, a first angle between a perpendicular line drawn from an opening end of the first surface to the surface of the first cladding layer and the first surface, and a second angle between a perpendicular line drawn from an opening end of the second surface to the surface of the first cladding layer and the second surface are all acute angles.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: March 2, 2021
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Patent number: 10928598
    Abstract: An optical waveguide mounting substrate includes a wiring substrate, and an optical waveguide mounted on the wiring substrate with an adhesive layer being interposed therebetween. The optical waveguide includes a first cladding layer, a core layer formed on a surface of the first cladding layer facing toward the wiring substrate, and a second cladding layer formed on the surface of the first cladding layer facing toward the wiring substrate so as to cover a periphery of the core layer. An opening is opened on the second cladding layer-side, penetrating the second cladding layer and the core layer, and closed on the first cladding layer-side, and a metal film is provided on an end face of the core layer in the opening. The second cladding layer faces the wiring substrate via the adhesive layer. A part of the adhesive layer is filled in the opening.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: February 23, 2021
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Publication number: 20210018702
    Abstract: An optical waveguide includes a first clad layer, core layers each formed on the first clad layer, a second clad layer formed on the first clad layer to cover the core layers, grooves each provided corresponding to one of the core layers. The optical waveguide further includes inclined surfaces each disposed in the corresponding groove to face an end surface of the corresponding core layer in an extension direction of the core layers. Each inclined surface is inclined with respect to the extension direction of the core layers. The optical waveguide further includes optical path changing mirrors each formed on the corresponding inclined surface. The grooves are physically separate from each other. Each inclined surface is formed in only the first and second clad layers. Each optical path changing mirror is not in contact with the core layers and is physically separate from the core layers.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 21, 2021
    Applicant: Shinko Electric Industries Co., LTD.
    Inventor: Kenji Yanagisawa
  • Publication number: 20200165497
    Abstract: Provided is a double-sided adhesive tape or sheet which is light-weight and has excellent strength and insulating properties even when the thickness of the tape or sheet is small. This double-sided adhesive tape or sheet comprises a laminate including a support and two adhesive agent layers formed on opposite surfaces of the support, wherein the support contains a polypropylene resin, the adhesive agent layers contain an acrylic polymer, the laminate has a total thickness (Ds) of 4-15 ?m, the value of the ratio Dp/Ds of the thickness (Dp) of the support to the total thickness (Ds) of the laminate is 0.15-0.6, and the laminate has a density of 0.90-1.10 g/cm3.
    Type: Application
    Filed: July 13, 2018
    Publication date: May 28, 2020
    Inventors: Kazuo IKEDA, Masahiro NAKATA, Minoru INOUE, Takamichi YAMAGUCHI, Tohru MURAI, Kenji YANAGISAWA
  • Publication number: 20200150360
    Abstract: An optical waveguide mounting substrate includes a wiring substrate, and an optical waveguide mounted on the wiring substrate with an adhesive layer being interposed therebetween. The optical waveguide includes a first cladding layer, a core layer formed on a surface of the first cladding layer facing toward the wiring substrate, and a second cladding layer formed on the surface of the first cladding layer facing toward the wiring substrate so as to cover a periphery of the core layer. An opening is opened on the second cladding layer-side, penetrating the second cladding layer and the core layer, and closed on the first cladding layer-side, and a metal film is provided on an end face of the core layer in the opening. The second cladding layer faces the wiring substrate via the adhesive layer. A part of the adhesive layer is filled in the opening.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventor: Kenji Yanagisawa
  • Publication number: 20190353842
    Abstract: An optical waveguide is formed on a support member. A second cladding layer is formed on a surface of a first cladding layer so as to cover a core layer. An opening is opened at the second cladding layer-side, penetrates the second cladding layer and the core layer, and closed at the first cladding layer-side. The opening has a first surface and a second surface ranging from the opened side to the closed side. In a vertical section taken along a longitudinal direction of the core layer, a first angle between a perpendicular line drawn from an opening end of the first surface to the surface of the first cladding layer and the first surface, and a second angle between a perpendicular line drawn from an opening end of the second surface to the surface of the first cladding layer and the second surface are all acute angles.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 21, 2019
    Inventor: Kenji Yanagisawa
  • Patent number: 10466428
    Abstract: An optical waveguide device includes an optical-electrical hybrid substrate and a lens component mounted on the optical-electrical hybrid substrate. The optical-electrical hybrid substrate includes a wiring substrate and an optical waveguide on the wiring substrate. An optical path changer is arranged on an end of the optical waveguide. The optical waveguide includes an opening configured to expose a connection pad of the wiring substrate. The lens component includes a component body including a conductive member receptacle at a position corresponding to the opening of the optical waveguide. The lens component includes a conductive member partially accommodated in the conductive member receptacle and configured to connect the lens component to the connection pad.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 5, 2019
    Assignee: Shinko Electric Industries Co., LTD.
    Inventor: Kenji Yanagisawa
  • Publication number: 20190187389
    Abstract: An optical waveguide device includes an optical-electrical hybrid substrate and a lens component mounted on the optical-electrical hybrid substrate. The optical-electrical hybrid substrate includes a wiring substrate and an optical waveguide on the wiring substrate. An optical path changer is arranged on an end of the optical waveguide. The optical waveguide includes an opening configured to expose a connection pad of the wiring substrate. The lens component includes a component body including a conductive member receptacle at a position corresponding to the opening of the optical waveguide. The lens component includes a conductive member partially accommodated in the conductive member receptacle and configured to connect the lens component to the connection pad.
    Type: Application
    Filed: November 9, 2018
    Publication date: June 20, 2019
    Applicant: Shinko Electric Industries Co., LTD.
    Inventor: Kenji Yanagisawa
  • Patent number: 10022927
    Abstract: An optical waveguide having a plurality of optical paths is formed on a substrate. A reflection mechanism is arranged above the optical waveguide. The reflection mechanism includes mirror components, each of which has an inclined reflective surface, and a mask having a plurality of openings. Laser is irradiated to the mirror components and optical path conversion inclined surfaces are formed in the plurality of optical paths at the same time by the laser reflected on the mirror components.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 17, 2018
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Publication number: 20180180804
    Abstract: An optical waveguide includes a substrate, a first clad layer, a core layer, and a second clad layer that are successively stacked. A first protection part formed on the substrate covers a side surface of the first clad layer, and a second protection part formed on the first clad layer covers a side surface of the second clad layer. The second clad layer is smaller than the first clad layer in a plan view of the optical waveguide. The first protection part widens from a top surface towards a bottom surface of the first clad layer, and the second protection part widens from a top surface towards a bottom surface of the second clad layer.
    Type: Application
    Filed: November 20, 2017
    Publication date: June 28, 2018
    Inventor: Kenji YANAGISAWA
  • Patent number: 9958607
    Abstract: A light waveguide includes a first cladding layer, a groove formed in the first cladding layer, a core layer embedded in the groove, and a second cladding layer formed on the first cladding layer and the core layer. A width and thickness of one end of the core layer are larger than a width and thickness of the other end of the core layer.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: May 1, 2018
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Patent number: D944319
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: February 22, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kenji Yanagisawa, Hiroto Miyauchi, Yosuke Nakano, Shun Ito, Keiichi Yato, Haruna Takahashi, Atsuhiko Takeuchi, Hitoshi Igarashi