Patents by Inventor Toru Sakai

Toru Sakai 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: 10481388
    Abstract: An electrowetting display device includes a first support plate and a second support plate opposite the first support plate, and a plurality of pixel walls over the first support plate. The plurality of pixel walls are associated with an electrowetting pixel and define a volume containing at least a portion of an oil and an electrolyte fluid. The electrolyte fluid has a first refractive index. The electrowetting display device includes a pixel spacer between a first pixel wall in the plurality of pixel walls and the second support plate. A second refractive index of the pixel spacer is less than the first refractive index. The electrowetting display device includes a pixel electrode over the first support plate for applying a voltage within the electrowetting pixel to cause relative displacement of the oil and the electrolyte fluid.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: November 19, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Toru Sakai, Sridhar Guntaka, Karel Johannes Gerhardus Hinnen
  • Patent number: 10475401
    Abstract: An electrowetting display device comprising an electrowetting element comprising a control system, a first fluid, a second fluid immiscible with the first fluid, and a first and second support plate. A first and second electrode are, respectively, overlapped by a first and second portion of a surface of the first support plate. The control system is operable to, in response to input data indicative of a first grey level, apply a first voltage between the second fluid and the first electrode such that the second fluid is in contact with at least part of the first portion and, subsequently, apply a second voltage between the second fluid and the second electrode to translate the first fluid such that the second fluid is in contact with at least part of the second portion.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 12, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Andrew Hayes, Gor Manukyan, Melanie Maria Hubertina Wagemans, Daniel Figura, Bokke Johannes Feenstra, Toru Sakai
  • Patent number: 10459216
    Abstract: An electrowetting element comprises a wall transmissive to light of a first wavelength. A support plate comprises an electrode and a layer absorbent to light of the first wavelength, which for example has passed into the support plate through the wall.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: October 29, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Karel Johannes Gerhardus Hinnen, Tulasi Sridhar Reddy Guntaka, Abhishek Kumar, Toru Sakai
  • Patent number: 10454325
    Abstract: The present invention ensures reliability while reducing the size of an axial air gap rotating electric machine. An axial air gap rotating electric machine has: a stator comprising a plurality of core members arranged in a ring shape, said core members each having an iron core, a coil wound in an iron core outer periphery direction, and a bobbin disposed between the iron core and the coil; and a rotor plane-facing an end surface of the iron core via an air gap in a rotating shaft radial direction.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: October 22, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shuuichi Takahashi, Hirooki Tokoi, Toru Sakai, Katsuyuki Yamazaki, Toshifumi Suzuki, Jun Sakurai, Tomonori Kawagoe, Daisaku Takahashi
  • Patent number: 10444490
    Abstract: A display device including a first support plate and an opposing second support plate. A first pixel is positioned between the first support plate and the second support plate. A spacer structure is coupled to the second support plate and associated with the first pixel. The spacer structure allows propagation of light having a first wavelength and prevents propagation of light having a second wavelength.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: October 15, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Tulasi Sridhar Reddy Guntaka, Toru Sakai, Abhishek Kumar, Karel Johannes Gerhardus Hinnen
  • Patent number: 10409053
    Abstract: An electrowetting display device includes a first support plate and an opposing second support plate and an electrowetting pixel region between the first support plate and the second support plate. A thin film transistor (TFT) structure is over the first support plate and associated with the electrowetting pixel region. The TFT structure includes a first metal layer over the first support plate. The first metal layer includes a gate and a reflective metal portion. A semiconductor layer is over the gate. A dielectric layer is on the first metal layer. The dielectric layer includes a first contact hole extending along at least a portion of a length of the dielectric layer. A light sensing element is disposed over the dielectric layer and in ohmic contact with the reflective metal portion.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 10, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Abhishek Kumar, Steven Ramos Carneiro, Toru Sakai
  • Patent number: 10401614
    Abstract: A system and method for an electrowetting display device are presented. The electrowetting display device includes a first support plate and a second support plate, A plurality of pixel walls associated with an electrowetting pixel are formed over the first support plate. A color filter is over the electrowetting pixel. The color filter allows propagation of visible light of a first color and prevents propagation of visible light of a second color. In an embodiment, the color filter includes a layer of light-absorbing photoresist that is patterned into a first plurality of regions and a second plurality of regions. Each region in the first plurality of regions has a first optical density and each region in the second plurality of regions has a second optical density so that the color filter has a non-uniform optical density.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 3, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Sridhar Guntaka, Toru Sakai, Karel Johannes Gerhardus Hinnen
  • Patent number: 10394014
    Abstract: A display device includes a bottom support plate and an opposing top support plate. A pixel region is between the bottom support plate and the top support plate. A color filter layer on an inner surface of the top support plate includes a plurality of color filters, wherein a first color filter of the plurality of color filters is positioned within the pixel region. A black matrix member is disposed between the first color filter and an adjacent second color filter of the plurality of color filters. A portion of the first color filter is disposed over the black matrix material and a portion of the second color filter is disposed over the portion of the first color filter.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: August 27, 2019
    Assignee: Amazon Technologies, Inc.
    Inventor: Toru Sakai
  • Patent number: 10379339
    Abstract: An electrowetting display device is presented. The device includes a top support plate including a top surface and a bottom surface. A viewing surface of the device is over the top surface of the top support plate. A bottom support plate is positioned opposite the top support plate. A plurality of pixel walls are formed over a bottom surface of the top support plate. The plurality of pixel walls are associated with an electrowetting pixel and define a portion of a volume containing at least a portion of a first fluid and a second fluid. A transparent pixel electrode is on the top support plate and a common electrode is over a top surface of the bottom support plate. The common electrode includes a transparent material.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: August 13, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Olivier Rainaut, Toru Sakai
  • Patent number: 10379340
    Abstract: An electrowetting display device includes a first support plate and a second support plate opposite the first support plate. A plurality of pixel walls are formed over the first support plate. The plurality of pixel walls are associated with a first pixel and a second pixel. The plurality of pixel walls define a first display area of the first pixel and a second display area of the second pixel. A first electrode is formed over the first support plate underneath the first display area of the first pixel. A second electrode is formed over the first support plate underneath the second display area of the second pixel. The first electrode is electrically connected to the second electrode. A first switch may be positioned underneath the second display area, with the first switch being electrically connected to the first electrode.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 13, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Wilhelmus Johannes Robertus Van Lier, Toru Sakai, Abhishek Kumar, Gor Manukyan
  • Publication number: 20190245418
    Abstract: This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed, centered around a rotating shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in a radial direction of the rotating shaft. The bobbin is formed in a cylindrical shape, has flange parts extending a predetermined amount in the outer circumferential direction at the top and bottom of the cylindrical shape, is provided with notch sections on the tip part in the inner circumferential direction of the flange part of the bobbin, and forms an acute angle. In addition, approximately circular notch sections are formed on adjacent side surface portions of the bobbin in the outer circumferential direction of the bobbin.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 8, 2019
    Inventors: Shuuichi TAKAHASHI, Yasuei YONEOKA, Toshifumi SUZUKI, Toru SAKAI, Katsuyuki YAMAZAKI, Daisaku TAKAHASHI, Daisuke KURAI, Jun SAKURAI
  • Publication number: 20190199158
    Abstract: A rotating electrical machine that comprises: a stator in which a plurality of core units that have a core and a coil are annularly arranged around a shaft center; a rotor that faces a flux end surface of the stator in the shaft-center direction with a prescribed gap therebetween; a housing that houses the stator and the rotor and has an outlet that guides a lead wire for the stator to the outside; and a resin that integrally molds the stator and an inner circumferential surface of the housing that includes the outlet. The inner diameter of the outlet becomes larger from the shaft-center side to the radial-direction outside. The outlet has an elastic member that keeps the resin from flowing to the outside of the housing. The elastic member has a hollow part through which the lead wire passes from the shaft-center side to the radial-direction outside. Pressure from a rotary-shaft radial direction seals between the hollow part and the lead wire.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 27, 2019
    Inventors: Shuuichi TAKAHASHI, Yasuei YONEOKA, Toshifumi SUZUKI, Toru SAKAI, Daisaku TAKAHASHI, Jun SAKURAI, Daisuke KURAI
  • Patent number: 10330918
    Abstract: A display device includes a first support plate and a second support plate. A pixel region between the first support plate and the second support plate includes a plurality of pixel wall portions over the first support plate forming a perimeter of the pixel region. A first liquid and a second liquid that is immiscible with the first liquid are disposed in the pixel region. A light-blocking layer is disposed on an inner surface of the second support plate. The light-blocking layer includes a light-blocking portion positioned over a first pixel wall portion of the plurality of pixel wall portions. An electrically conductive layer comprising an electrically conductive portion is disposed on a first surface of the light-blocking portion. A recessed region is aligned with the electrically conductive portion such that a portion of the second liquid disposed within the recessed region contacts the electrically conductive portion.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 25, 2019
    Assignee: Amazon Technologies, Inc.
    Inventor: Toru Sakai
  • Patent number: 10308300
    Abstract: A seat attachment structure of a saddle riding vehicle in which, in a state a first end side of a seat, on which an occupant sits, in a forward/rearward direction of a vehicle body is locked to the vehicle body, a second end side of the seat in the forward/rearward direction of the vehicle body is coupled to the vehicle body, the seat attachment structure of the saddle riding vehicle includes a seat attachment member configured to couple a second end side of a seat to a vehicle body, and the seat attachment member includes vehicle body-side connecting sections swingably attached to the vehicle body while having an axis extending along a vehicle width direction as a swing axis, and seat fixing sections to which the second end side of the seat is attached.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 4, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuma Koishikawa, Toru Sakai
  • Patent number: 10288871
    Abstract: A display device includes a first support plate and a pixel region over the first support plate. A thin film transistor (TFT) structure is disposed over the first support plate and associated with the pixel region. The TFT structure includes a first metal layer over the first support plate. The first metal layer includes a gate. A silicon layer is disposed over the gate. A second metal layer is disposed over the silicon layer. The second metal layer includes a source and a drain covering a first portion of the silicon layer. A light-absorbing material layer is disposed over at least a second portion of the silicon layer.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 14, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Abhishek Kumar, Toru Sakai
  • Patent number: 10281713
    Abstract: A display device and a method for making the same are provided. In the method, source and drain contacts are patterned on a buffer layer. An IGZO layer is depositing over at least a portion of the source contact and a portion of the drain contact. A gate structure is formed over the IGZO layer. A silicon nitride layer is deposited over the gate structure and the IGZO layer to form a first doped region in the IGZO layer and a second doped region in the IGZO layer. A pixel electrode is formed over the buffer layer. A plurality of pixel walls are formed over the buffer layer, the plurality of pixel walls being associated with an electrowetting pixel and the pixel electrode being configured to a apply voltage within the electrowetting pixel. At least one of the source contact and the drain contact is connected to the pixel electrode.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 7, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Abhishek Kumar, Toru Sakai
  • Publication number: 20190126389
    Abstract: The present invention relates to a laser-welding apparatus and a laser-welding method. The laser-welding apparatus of the present invention includes: a laser output section that emits a laser beam toward a weld part of a welding target member; an optical interferometer that measures a weld penetration depth of the weld part based on interference which occurs due to an optical path difference between a measurement beam and a reference beam, the measurement beam having a frequency length different from that of the laser beam and having been emitted to the weld part while being coaxially overlapped with the laser beam, and reflected by the weld part; and a protection optical member disposed on an optical path between the welding target member and the laser output section while being inclined with respect to a plane perpendicular to an optical axis of the measurement beam.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki FUKAE, Takashi URASHIMA, Toshiyuki MISHIMA, Toru SAKAI, Michio SAKURAI
  • Patent number: 10274720
    Abstract: A display device includes a first support plate and an opposing second support plate. A first pixel region between the first support plate and the second support plate includes a first thin film transistor (TFT) structure over the first support plate. A second pixel region between the first support plate and the second support plate and adjacent the first pixel region includes a second TFT structure over the first support plate. A first pixel wall portion is positioned over the first support plate between the first pixel region and the second pixel region such that each of the first TFT structure and the second TFT structure is positioned adjacent the first pixel wall portion. A light-blocking portion is disposed on an inner surface of the second support plate and positioned over the first TFT structure and the second TFT structure.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: April 30, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Tulasi Sridhar Reddy Guntaka, Karel Johannes Gerhardus Hinnen
  • Patent number: 10261310
    Abstract: A display device includes a first support plate and a pixel region over the first support plate. A thin film transistor (TFT) structure is disposed over the first support plate and associated with the pixel region. The TFT structure includes a first metal layer over the first support plate. The first metal layer includes a gate. A silicon layer is disposed over the gate. A second metal layer is disposed over the silicon layer. The second metal layer includes a source and a drain covering a first portion of the silicon layer. An amorphous silicon layer is disposed over at least a portion of the second metal layer and a second portion of the silicon layer.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 16, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Abhishek Kumar
  • Patent number: 10209508
    Abstract: A display device includes a first support plate and a second support plate. A pixel region between the first support plate and the second support plate includes a plurality of pixel wall portions over the first support plate forming a perimeter of the pixel region. A first liquid and a second liquid that is immiscible with the first liquid are disposed in the pixel region. A light-blocking portion is disposed on an inner surface of the second support plate and over a first pixel wall portion of the plurality of pixel wall portions. A recessed region is aligned with the light-blocking portion. An electrically conductive layer is disposed within the recessed region and disposed on a portion of the light-blocking portion. The electrically conductive layer has a first surface contacting the second liquid.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 19, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Jeroen Cornelis van der Gaag