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: 10209507
    Abstract: An electrowetting display device comprises a first support plate comprising a first electrode and a second support plate. A seal connects the first support plate to the second support plate. A first fluid and a second fluid, immiscible with the first fluid, are located between the first and second support plates. A second electrode is in electrical contact with the second fluid. An electrical connector connects the first electrode to the second electrode. A barrier structure at least partly surrounds the electrical connector. The electrical connector and the barrier structure are separated from the first fluid and the second fluid by the seal.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: February 19, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Abhishek Kumar, Jeroen Cornelis Van Der Gaag
  • Patent number: 10203495
    Abstract: A display device includes a first support plate and an opposing second support plate. A pixel region is positioned between the first support plate and the second support plate. A thin film transistor (TFT) structure is formed on the first support plate and associated with the pixel region. The TFT structure includes a source and drain electrode layer. A reflective layer is formed or disposed over the source and drain electrode layer. The reflective layer includes a pixel electrode within the pixel region. A via is between the source and drain electrode layer and the reflective layer to electrically couple the pixel electrode to the source and drain electrode layer. An organic layer is formed or disposed over the via. The organic layer includes an elevated surface over the via.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 12, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Gor Manukyan, Jozef Elisabeth Aubert, Abhishek Kumar
  • Patent number: 10156714
    Abstract: A device includes first and second support plates. A plurality of pixel walls are formed over the first support plate. The plurality of pixel walls are associated with an electrowetting pixel and define a volume. The electrowetting pixel includes a fluid accumulation region defined by a recess in a hydrophobic layer of the electrowetting pixel. A transistor is over the first support plate underneath a first pixel wall in the plurality of pixel walls and a pixel electrode is formed over the first support plate underneath the volume defined by the plurality of pixel walls in electrical contact with the transistor. A bottom electrode is formed over the first support plate underneath the volume defined by the plurality of pixel walls. A first portion of the bottom electrode is located underneath the fluid accumulation region and a second portion of the bottom electrode is located underneath the pixel electrode.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 18, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Toru Sakai, Abhishek Kumar
  • Publication number: 20180351419
    Abstract: The moldability of the stator of an axial gap type rotating electric machine improved. The axial gap type rotating electric machine has: a stator comprising core members disposed about a rotating shaft in a ring shape with a predetermined space from adjacent core members, said core members each having a core around which a coil is wound, the number of the turns of the coil being less on the outer perimeter side than on the inner perimeter side, the core members being molded with mold material; and a rotor facing an end surface of the core in the shaft direction through a predetermined gap. The core members comprise: a first core member in which the number of coil winding layers on one side in the shaft direction is larger than the number of winding layers on the other side; and a second core member in which the number of coil winding layers on one side in the shaft direction is less than the number of winding layers on the other side.
    Type: Application
    Filed: March 4, 2015
    Publication date: December 6, 2018
    Inventors: Toru SAKAI, Tomonori KAWAGOE, Daisuke KITAJIMA, Katsuyuki YAMAZAKI, Toshifumi SUZUKI, Shuuichi TAKAHASHI, Hirooki TOKOI
  • Patent number: 10133057
    Abstract: An electrowetting element comprising a first fluid and a second fluid immiscible with the first fluid. A support plate comprises an electrode, a support plate surface and a substrate. An inorganic dielectric layer is located between the substrate and the support plate surface and is transmissive to light in the visible spectrum. An organic dielectric layer is located between the substrate and the support plate surface and is transmissive to visible light. The inorganic dielectric layer has an inorganic dielectric layer deformation behavior and the organic dielectric layer has an organic dielectric layer deformation behavior substantially equal to the inorganic dielectric layer deformation behavior.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: November 20, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Cristina Maria Petcu, Toru Sakai
  • Patent number: 10078212
    Abstract: A display device, such as an electrowetting display device, includes a first support plate and an opposing second support plate. A thin film transistor (TFT) structure on the first support plate is communicatively coupled with a pixel within a pixel region between the first support plate and the second support plate. The TFT structure includes an organic layer disposed over a silicon semiconductor layer and a reflective layer disposed on the organic layer. The reflective layer extends over the organic layer to overlie the silicon semiconductor layer.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: September 18, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventor: Toru Sakai
  • Publication number: 20180254680
    Abstract: The purpose of the present invention is to control the lamination thickness of the laminated core of an axial gap rotating electric machine. The axial gap rotating electric machine is provided with: a stator comprising a plurality of core members arranged circularly about the rotational axis center, said core members each comprising a columnar-laminated core having a flux surface in a rotation axis direction, a coil disposed on the outer perimeter of the core in the radial direction, and a substantially cylindrical bobbin disposed between the core and the coil; and at least one rotor facing the flux surface with a predetermined gap interposed therebetween in the rotation axis direction. The bobbin has an inner cylinder facing the outer perimeter of the core in the radial direction, and at least part of the inner diameter of the inner cylinder becomes gradually smaller along the rotation axis direction and makes contact with the outer perimeter surface of the laminated core in the radial direction.
    Type: Application
    Filed: March 2, 2016
    Publication date: September 6, 2018
    Inventors: Jun SAKURAI, Daisaku TAKAHASHI, Toru SAKAI, Katsuyuki YAMAZAKI, Shuuichi TAKAHASHI
  • Patent number: 10062658
    Abstract: A surface of at least one of a connection terminal of an electronic component and a connection terminal of a circuit board is covered with a protection layer made of a AgSn alloy. The connection terminal of the electronic component is soldered to the connection terminal of the circuit board.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: August 28, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Seiki Sakuyama, Toshiya Akamatsu, Nobuhiro Imaizumi, Keisuke Uenishi, Kenichi Yasaka, Toru Sakai
  • Patent number: 10056342
    Abstract: A surface of at least one of a connection terminal of an electronic component and a connection terminal of a circuit board is covered with a protection layer made of a AgSn alloy. The connection terminal of the electronic component is soldered to the connection terminal of the circuit board.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 21, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Seiki Sakuyama, Toshiya Akamatsu, Nobuhiro Imaizumi, Keisuke Uenishi, Kenichi Yasaka, Toru Sakai
  • Patent number: 10046821
    Abstract: A saddle type vehicle wherein the supporting rigidity of a rear fender frame is enhanced while securing a degree of freedom of a shape of a vehicle body frame main body. A shock absorber bracket wherein an upper end portion of a rear shock absorber for supporting a rear wheel thereon is coupled and attached to a vehicle body frame main body. A rear fender frame includes a plurality of supported portions in a front region thereof. At least part of the plurality of supported portions is co-fastened to the shock absorber bracket together with the upper end portion of the rear shock absorber, and the remaining supported portions are fixed to the vehicle body frame main body.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 14, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuma Koishikawa, Yoshiki Higashijima, Toru Sakai
  • Patent number: 10031332
    Abstract: Electrowetting display elements comprising a thin film transistor are disclosed. In examples, the thin film transistor may comprise a first gate terminal, a semiconducting channel overlying at least a portion of the first gate terminal, a source terminal formed on at least a first portion of the semiconducting channel, and a drain terminal formed on at least a second portion of the semiconducting channel, different from the first portion of the semiconducting channel. The source and drain terminals may form an inter-terminal region of the semiconducting channel located between the source terminal and the drain terminal. A second gate terminal may be formed overlying at least a portion of the inter-terminal region so as to shield the inter-terminal region from light and to increase the conductivity of the semiconducting channel.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 24, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Abhishek Kumar
  • Patent number: 10001640
    Abstract: A pixel-based display device, such as an electrowetting display, includes an array of routing dummy pixels that are electrically interconnected in series, forming a conductive routing trace through the pixel area. Within the routing dummy pixel substrate, a source-drain metal layer is electrically isolated from a gate metal layer. A source metal interconnect between the source-drain metal layers of vertically adjacent routing dummy pixels electrically connects the vertically adjacent routing dummy pixels in series. The routing trace conducts a common voltage from a power supply to a common connector pad, facilitating relocation of the pad from the bottom to the top of the display. The pad and the source-drain and reflector metal layers of the routing dummy pixels have the same electric potential, ensuring that the routing dummy pixels remain in an “off” state and appear black throughout operation of the display device.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: June 19, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Abhishek Kumar, Toru Sakai
  • Patent number: 9995926
    Abstract: A display device includes a first support plate. A pixel region is positioned over the first support plate. The pixel region includes a pixel and an electrode layer disposed between the first support plate and the pixel region. A specular reflective layer is disposed on the electrode layer. The specular reflective layer has a first refractive index. A diffusion layer is disposed on the specular reflective layer. The diffusion layer includes a plurality of islands. Each island of the plurality of islands is separated by a distance from an adjacent island of the plurality of islands, wherein a portion of the specular reflective layer is exposed between two adjacent islands of the plurality of islands. Each island has a second refractive index greater than the first refractive index.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: June 12, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventor: Toru Sakai
  • Patent number: 9977233
    Abstract: An electrowetting display comprises a first support plate, a second support plate substantially parallel to the first support plate, an electrolyte solution disposed between the first support plate and the second support plate, and a plurality of transparent diffuser elements protruding into the electrolyte solution from non-contiguous areas of the second support plate. Recesses separate the transparent diffuser elements.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 22, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Toru Sakai, Tulasi Sridhar Reddy Guntaka
  • Patent number: 9971144
    Abstract: An electrowetting display device comprises a first fluid, an array of electrowetting elements, each respectively comprising a portion of the first fluid, and a first support plate. The first support plate comprises a first region extending along a first edge of the first support plate and a second region extending along a second edge of the first support plate. The first and second regions are located outside the array of electrowetting elements, and the first region is non-overlapping the second region. A first electrode is located in the first region and an electrical component is located in the second region. A second support plate of the electrowetting display device includes a second electrode in electrical contact with a second fluid immiscible with the first fluid. An electrical connector connects the first electrode to the second electrode and a conductor connects the first electrode to the electrical component.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 15, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Toru Sakai, Abhishek Kumar
  • Patent number: 9956945
    Abstract: A reservoir tank mounting section includes a reservoir tank configured to store a hydraulic fluid of a brake apparatus, and an auxiliary machine case. The auxiliary machine case has a tank supporting section configured to hold the reservoir tank. The tank supporting section is constituted by a recessed section in which an outer surface of the auxiliary machine case is recessed inward. The tank supporting section is formed substantially along an outer surface shape of the reservoir tank and has an outer surface covering wall configured to cover an outer surface of the reservoir tank.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: May 1, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuma Koishikawa, Toru Sakai, Masayuki Hiramaru
  • Patent number: 9939484
    Abstract: A method for operating a display device includes configuring at least a portion of a row or at least a portion of a column of pixels of the display device to produce interconnected pixels, wherein the interconnected pixels are interconnected to one another in an electrically parallel configuration to create a parallel capacitance that is larger than capacitances of each of the interconnected pixels; connecting a voltage-measuring probe to drains of TFTs of the interconnected pixels; applying source voltages to the TFTs of the interconnected pixels from one or more source lines and applying a gate voltage to the TFTs of the interconnected pixels from one or more gate lines; and measuring voltage of the TFT drains of the interconnected pixels.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 10, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Toru Sakai, Jozef Elisabeth Aubert
  • Patent number: 9927606
    Abstract: A display device includes a first support plate and a second support plate. The second support plate has a first refractive index. A pixel region is positioned between the first support plate and the second support plate. A first liquid and a second liquid that is immiscible with the first liquid are disposed in the pixel region. A diffusion layer disposed between the first support plate and the second support plate contacts the second liquid. The diffusion layer includes a first region providing a common electrode associated with the pixel region.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: March 27, 2018
    Assignee: Amazon Technologies, Inc.
    Inventor: Toru Sakai
  • Publication number: 20170371149
    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: Application
    Filed: June 27, 2016
    Publication date: December 28, 2017
    Inventors: Toru Sakai, Abhishek Kumar
  • Publication number: 20170363860
    Abstract: An electrowetting display device comprises a first support plate comprising a first electrode and a second support plate. A seal connects the first support plate to the second support plate. A first fluid and a second fluid, immiscible with the first fluid, are located between the first and second support plates. A second electrode is in electrical contact with the second fluid. An electrical connector connects the first electrode to the second electrode. A barrier structure at least partly surrounds the electrical connector. The electrical connector and the barrier structure are separated from the first fluid and the second fluid by the seal.
    Type: Application
    Filed: June 21, 2016
    Publication date: December 21, 2017
    Inventors: Toru SAKAI, Abhishek KUMAR, Jeroen Cornelis VAN DER GAAG