Patents by Inventor Ryo Yamakawa

Ryo Yamakawa 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: 11183708
    Abstract: Provided are a method for producing a sulfide solid electrolyte having a high Li ion conductivity, in which the production time can be greatly reduced, and a sulfur-based material that can be used in the production method for a sulfide solid electrolyte. The invention relates to a method for producing a sulfide solid electrolyte containing a lithium element, a sulfur element, a phosphorus element, an iodine element and a bromine element, which includes mixing and grinding lithium sulfide and lithium bromide followed by adding phosphorus sulfide and lithium iodide thereto and reacting them, and relates to a sulfur-based material.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: November 23, 2021
    Assignees: IDEMITSU KOSAN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryo Aburatani, Masahiro Iwahara, Fumio Yamakawa, Takuo Yanagi, Takumi Tanaka
  • Publication number: 20210318536
    Abstract: An optical scanning device includes light sources, a deflector, an optical element, and light blockers. The light blockers are spaced apart in a rotation direction of the deflector. An inequality ?1<?2 is satisfied, where when viewed from the rotation axis direction, ?1 is an angle formed by a line segment connecting the end portion of a light blocker disposed most downstream in the rotation direction to a rotation axis center of the deflector and a line segment connecting the end portion of a light blocker disposed most upstream in the rotation direction to the rotation axis center, and ?2 is an angle formed by a line segment connecting an upstream end portion of one mirror surface in the rotation direction to the rotation axis center and a line segment connecting a downstream end portion of the one mirror surface in the rotation direction to the rotation axis center.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 14, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshinobu SAKAUE, Takeshi YAMAKAWA, Susumu NARITA, Ryo SATO
  • Publication number: 20190391209
    Abstract: A monitoring apparatus includes: a monitoring portion that monitors a voltage of each of battery cells connected in series, each of the battery cells having an electrode terminal; and a wiring portion that connects the monitoring portion and the electrode terminal. The wiring portion includes a first flexible substrate and a second substrate that have flexibility and are integrally linked with each other. A linking part where the first flexible substrate and the second flexible substrate are linked is bent. The first flexible substrate is connected with the electrode terminal. The second flexible substrate is connected with the monitoring portion. One of the first flexible substrate and the second flexible substrate includes an arm. Another of the first flexible substrate and the second flexible substrate other than the one including the arm includes a slit. The arm is fixed to the slit, causing the linking part to be reinforced.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 26, 2019
    Applicant: DENSO CORPORATION
    Inventors: Masakazu KOUDA, Shinsuke KAWAMOTO, Hayato MIZOGUCHI, Ryo YAMAKAWA
  • Patent number: 10459267
    Abstract: Provided is a display apparatus allowing the occurrence of display defects to be minimized. In each center portion of two long sides of the display apparatus, a spacer 5 on the panel chassis 3 side has a projection 50 projecting toward a bezel 6, and a spacer 7 on the bezel 6 side is provided with a notch longer than the length of the projection 50 at the portion opposite the projection 50. That is, the bezel 6 has a recess 60 formed by one surface of a flat plate part 6a and the end surface of the spacer 7 at the notch portion of the spacer 7. In the display apparatus, a liquid crystal panel 1 is assembled with one surface thereof curved outward.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 29, 2019
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Ryo Yamakawa, Kouji Matsumoto
  • Patent number: 10168574
    Abstract: A light source device comprises: a light source; a light-transmissive plate having a side surface or a main surface facing the light source; a holding frame having a frame-shaped surface holding a peripheral edge portion of the light-transmissive plate, the holding frame having a frame shape; and a spacer provided between the peripheral edge portion of the light-transmissive plate and the frame-shaped surface of the holding frame. The holding frame comprises: a first rib provided on the frame-shaped surface, at a position closer to an outer edge of the holding frame than a contact position of the frame-shaped surface in contact with the spacer is, the first rib extending along the frame shape; and a first recessed portion provided between the first rib and the contact position.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: January 1, 2019
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Patent number: 10134344
    Abstract: A liquid crystal television increases or decreases a gradation value when the gradation value of an image signal to be displayed on a liquid crystal panel is within a prescribed range. Further, the liquid crystal television decreases or increases the luminance depending to the gradation value of the image signal based on the increase or decrease in the gradation value. The liquid crystal television applies a voltage depending on the gradation value after the change to the liquid crystal panel, such that a transmittance in the liquid crystal panel is changed (increased or decreased). Further, the liquid crystal television controls each light source to emit light with the luminance after the change, such that the luminance of the light radiated to the liquid crystal panel from the light source is changed (decreased or increased).
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: November 20, 2018
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Patent number: 10114255
    Abstract: A display apparatus includes a liquid crystal panel having a plurality pixels arranged in a matrix shape, in which the plurality of pixels each has a first subpixel and a second subpixel that are divided from each other. The display apparatus includes a control unit configured to control a level of brightness values of the first subpixel and the second subpixel of any one pixel of the plurality of pixels so as to be switched at a prescribed period.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: October 30, 2018
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Patent number: 9998732
    Abstract: A display apparatus includes a liquid crystal panel, and a plurality of light sources irradiating the liquid crystal panel with light. The display apparatus respectively displays signals corresponding to the respective regions in an image frame, in respective regions of the liquid crystal panel irradiated with light by each of the light sources, in an order from both end sides in an arrangement direction thereof toward a center alternately with each other, respectively. The display apparatus irradiates the respective regions with light by the light sources corresponding thereto, in a latter period within a period in which the signals are displayed in the respective regions of the liquid crystal panel.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: June 12, 2018
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventor: Ryo Yamakawa
  • Publication number: 20180107060
    Abstract: Provided is a display apparatus allowing the occurrence of display defects to be minimized. In each center portion of two long sides of the display apparatus, a spacer 5 on the panel chassis 3 side has a projection 50 projecting toward a bezel 6, and a spacer 7 on the bezel 6 side is provided with a notch longer than the length of the projection 50 at the portion opposite the projection 50. That is, the bezel 6 has a recess 60 formed by one surface of a flat plate part 6a and the end surface of the spacer 7 at the notch portion of the spacer 7. In the display apparatus, a liquid crystal panel 1 is assembled with one surface thereof curved outward.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Inventors: Ryo YAMAKAWA, Kouji MATSUMOTO
  • Publication number: 20180039137
    Abstract: A light source device comprises: a light source; a light-transmissive plate having a side surface or a main surface facing the light source; a holding frame having a frame-shaped surface holding a peripheral edge portion of the light-transmissive plate, the holding frame having a frame shape; and a spacer provided between the peripheral edge portion of the light-transmissive plate and the frame-shaped surface of the holding frame. The holding frame comprises: a first rib provided on the frame-shaped surface, at a position closer to an outer edge of the holding frame than a contact position of the frame-shaped surface in contact with the spacer is, the first rib extending along the frame shape; and a first recessed portion provided between the first rib and the contact position.
    Type: Application
    Filed: October 19, 2017
    Publication date: February 8, 2018
    Inventor: Ryo Yamakawa
  • Patent number: 9880338
    Abstract: An illumination device according to one embodiment of the present invention comprises a light guide plate configured to emit light from inside through one surface of the light guide plate, a light source disposed to face a peripheral surface of the light guide plate, and a reflection sheet which is provided at a region face to the other surface of the light guide plate, which is opposite to the one surface, to reflect the light emitted by the light source toward the light guide plate. For distances between the light source and a peripheral edge part of the reflection sheet, a distance between a middle part of the light source in a peripheral edge direction of the light guide plate and a portion in the peripheral edge part of the reflection sheet corresponding to the middle part is the longest.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: January 30, 2018
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Patent number: 9874681
    Abstract: An illumination device according to one embodiment of the present invention comprises a light guide plate configured to emit light from inside through one surface of the light guide plate and a light source disposed to face a peripheral surface of the light guide plate. In the display apparatus, during non-light emitting of the light source, for distance s between the light source and the peripheral surface, a distance between a middle part of the light source in a peripheral edge direction of the light guide plate and a portion in the peripheral surface corresponding to the middle part is the longest.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: January 23, 2018
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Patent number: 9842547
    Abstract: A display apparatus includes a liquid crystal panel, and a plurality of light sources irradiating the liquid crystal panel with light. The display apparatus inserts black signals during a predetermined period within respective frame periods in a plurality of image frames. The display apparatus respectively displays signals corresponding to the respective regions in each image frame into which the black signals are inserted, in respective regions of the liquid crystal panel irradiated with light by each of the light sources, in an order along an arrangement direction of the respective regions. The display apparatus respectively irradiates the respective regions with light by the light sources corresponding thereto, in a latter period within a period in which the corresponding signals are respectively displayed in the respective regions of the liquid crystal panel.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: December 12, 2017
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Publication number: 20170323603
    Abstract: A liquid crystal television increases or decreases a gradation value when the gradation value of an image signal to be displayed on a liquid crystal panel is within a prescribed range. Further, the liquid crystal television decreases or increases the luminance depending to the gradation value of the image signal based on the increase or decrease in the gradation value. The liquid crystal television applies a voltage depending on the gradation value after the change to the liquid crystal panel, such that a transmittance in the liquid crystal panel is changed (increased or decreased). Further, the liquid crystal television controls each light source to emit light with the luminance after the change, such that the luminance of the light radiated to the liquid crystal panel from the light source is changed (decreased or increased).
    Type: Application
    Filed: September 12, 2014
    Publication date: November 9, 2017
    Inventor: Ryo Yamakawa
  • Patent number: 9704443
    Abstract: The liquid crystal display apparatus include a control unit controlling so that a first difference is smaller than a second difference, which the first difference is a difference between an intermediate value between any high gradation value and low gradation value and a gradation value in which a gradation value during a transition from the high gradation value to the low gradation value is equal to a gradation value during a transition from the low gradation value to the high gradation value, when a frame of the converted image is switched, and the second difference is a difference between the intermediate value between the high gradation value and the low gradation value and the gradation value in which the gradation value during the transition from the high gradation value to the low gradation value is equal to the gradation value during the transition from the low gradation value to the high gradation value, when the frame of the acquired image is switched.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: July 11, 2017
    Assignee: Sakai Display Products Corporation
    Inventor: Ryo Yamakawa
  • Publication number: 20170045789
    Abstract: A display apparatus includes a liquid crystal panel having a plurality pixels arranged in a matrix shape, in which the plurality of pixels each has a first subpixel and a second subpixel that are divided from each other. The display apparatus includes a control unit configured to control a level of brightness values of the first subpixel and the second subpixel of any one pixel of the plurality of pixels so as to be switched at a prescribed period.
    Type: Application
    Filed: June 4, 2014
    Publication date: February 16, 2017
    Inventor: Ryo Yamakawa
  • Publication number: 20170039962
    Abstract: The liquid crystal display apparatus include a control unit controlling so that a first difference is smaller than a second difference, which the first difference is a difference between an intermediate value between any high gradation value and low gradation value and a gradation value in which a gradation value during a transition from the high gradation value to the low gradation value is equal to a gradation value during a transition from the low gradation value to the high gradation value, when a frame of the converted image is switched, and the second difference is a difference between the intermediate value between the high gradation value and the low gradation value and the gradation value in which the gradation value during the transition from the high gradation value to the low gradation value is equal to the gradation value during the transition from the low gradation value to the high gradation value, when the frame of the acquired image is switched.
    Type: Application
    Filed: June 4, 2014
    Publication date: February 9, 2017
    Inventor: Ryo Yamakawa
  • Publication number: 20160238782
    Abstract: An illumination device according to one embodiment of the present invention comprises a light guide plate configured to emit light from inside through one surface of the light guide plate and a light source disposed to face a peripheral surface of the light guide plate. In the display apparatus, during non-light emitting of the light source, for distance s between the light source and the peripheral surface, a distance between a middle part of the light source in a peripheral edge direction of the light guide plate and a portion in the peripheral surface corresponding to the middle part is the longest.
    Type: Application
    Filed: September 24, 2014
    Publication date: August 18, 2016
    Inventor: Ryo Yamakawa
  • Publication number: 20160231490
    Abstract: An illumination device according to one embodiment of the present invention comprises a light guide plate configured to emit light from inside through one surface of the light guide plate, a light source disposed to face a peripheral surface of the light guide plate, and a reflection sheet which is provided at a region face to the other surface of the light guide plate, which is opposite to the one surface, to reflect the light emitted by the light source toward the light guide plate. For distances between the light source and a peripheral edge part of the reflection sheet, a distance between a middle part of the light source in a peripheral edge direction of the light guide plate and a portion in the peripheral edge part of the reflection sheet corresponding to the middle part is the longest.
    Type: Application
    Filed: September 2, 2014
    Publication date: August 11, 2016
    Inventor: Ryo Yamakawa
  • Patent number: 9384689
    Abstract: An object of the present invention is to improve display quality in oblique view in a liquid crystal display device employing a multi-gap structure. After a gradation-transmittance characteristic when a liquid crystal panel is viewed from an oblique direction is acquired, a range of a gradation value in which a difference between a maximum value and a minimum value among three transmittances corresponding to each of the gradation values is minute is defined as a transmittance approximation range. A white balance parameter stored in a white balance adjustment LUT (130) is determined so that a maximum gradation value after correction by white balance adjustment for each color is set to the gradation value within the transmittance approximation range. By using the white balance parameter determined in this manner, the white balance adjustment is performed during operation of the liquid crystal display device.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: July 5, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Ryo Yamakawa