Patents by Inventor Keiji Takizawa

Keiji Takizawa 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).

  • Publication number: 20140229052
    Abstract: A control device for a hybrid vehicle, including a mode whereby the vehicle runs using a motor only, and a mode whereby the vehicle uses both the motor and an engine. When the motor temperature of an MG(2) exceeds a threshold temperature, an ECU moves from a running mode that uses the MG(2) only, to a running mode that limits the load on the MG(2). The ECU performs control in accordance with the charging state of the battery for running, such that the work rate of an electric pump for cooling the MG(2) is increased when the charging state is higher, and the running mode that uses the MG(2) only is maintained.
    Type: Application
    Filed: October 6, 2011
    Publication date: August 14, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Takizawa, Tomohiko Miyamoto, Shuhei Matsusaka
  • Patent number: 8780301
    Abstract: A liquid crystal display device of a transverse electric field type has characteristics in the following respects. A liquid crystal layer is sandwiched between two substrates. Two polarizing plates are provided on a side of the two substrates opposite to the liquid crystal layer such that the light transmission axes thereof are orthogonal to each other. A first electrode and a second electrode are formed on one of the two substrates. The liquid crystal is driven by an electric field generated between the first electrode and the second electrode. The polarizing plate, formed on one of the two substrates, is formed of a protective film, a polarizer, and two negative biaxial films. The two negative biaxial films include first and second negative biaxial films. The first negative biaxial film and the second negative biaxial film are entirely overlapped, and are disposed on a side of one or the other substrate.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: July 15, 2014
    Assignee: Japan Display West Inc.
    Inventors: Kojiro Ikeda, Tomoaki Sekime, Toshinori Uehara, Keiji Takizawa
  • Patent number: 8780025
    Abstract: Light reflecting layers 45a that totally reflect light are provided inside the subpixels 10 disposed in particular regions on an inner face of a TFT array substrate 4, and light reflecting layers 45b that scatter light are provided inside the subpixels 10 other than those. Thanks to this, the reflectance of the light reflecting layers 45a can be rendered different from that of the light reflecting layers 45b. As a result, differences can be created in the display light formed by the light reflecting layers 45a and by the light reflecting layers 45b, by means of the light that is reflected thereat. Thereby, fine adjustment of the display light brightness and contrast is enabled, so that a liquid crystal display device 1 with extensive power of expression and superior display characteristics is provided.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: July 15, 2014
    Assignee: Japan Display West Inc.
    Inventors: Toshinori Uehara, Kimitaka Kamijo, Keiji Takizawa, Tomoyuki Nakano, Kunio Maruyama, Hiroki Sugiyama
  • Patent number: 8704990
    Abstract: An electro-optical display apparatus includes a display area in which sub-pixel columns formed of sub-pixels of the same color that are linearly arranged in a single direction are disposed in a stripe arrangement together with sub-pixel columns of other colors. An aperture ratio of each sub-pixel in at least one sub-pixel column located at one edge of the display area in an arrangement direction of the sub-pixel columns and at least one sub-pixel column located at another edge of the display area in the arrangement direction of the sub-pixel columns are configured to be lower than those of sub-pixels of the same color located in a center portion of the display area.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: April 22, 2014
    Assignee: Japan Display West Inc.
    Inventors: Shuhei Yoshida, Keiji Takizawa
  • Patent number: 8519579
    Abstract: An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 27, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Tomohiko Miyamoto, Naoto Koshino, Hiroshi Hoshina, Keiji Takizawa, Ko Hashimoto, Tetsuo Wakita
  • Publication number: 20130088666
    Abstract: A liquid crystal display device of a transverse electric field type has characteristics in the following respects. A liquid crystal layer is sandwiched between two substrates. Two polarizing plates are provided on a side of the two substrates opposite to the liquid crystal layer such that the light transmission axes thereof are orthogonal to each other. A first electrode and a second electrode are formed on one of the two substrates. The liquid crystal is driven by an electric field generated between the first electrode and the second electrode. The polarizing plate, formed on one of the two substrates, is formed of a protective film, a polarizer, and two negative biaxial films. The two negative biaxial films include first and second negative biaxial films. The first negative biaxial film and the second negative biaxial film are entirely overlapped, and are disposed on a side of one or the other substrate.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 11, 2013
    Applicant: SONY CORPORATION
    Inventors: Kojiro Ikeda, Tomoaki Sekime, Toshinori Uehara, Keiji Takizawa
  • Patent number: 8334956
    Abstract: A liquid crystal device includes: a first substrate; a second substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first electrode and a second electrode disposed on a side of the first substrate facing the liquid crystal layer; and a color filter and an electrostatic shielding layer disposed on a side of the second substrate facing the liquid crystal layer, the color filter including coloring layers of at least three different colors, the electrostatic shielding layer having an aperture formed therein corresponding to the coloring layer of at least one of the three different colors.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: December 18, 2012
    Assignee: Sony Corporation
    Inventors: Shuhei Yoshida, Keiji Takizawa
  • Patent number: 8310609
    Abstract: Provided is a lateral electric field mode liquid crystal device including: a first substrate; a second substrate; a liquid crystal layer and pixel electrodes and common electrodes. A lateral electric field mode liquid crystal device drives the liquid crystal layer by an electric field generated between the pixel electrodes and the common electrodes, a light shielding layer is formed on a surface of the second substrate disposed close to the liquid crystal layer. A coloring layer is also formed so as to overlap with the pixel electrodes. An overcoat layer protects the coloring layer, and an alignment film is formed. An electrostatic shielding layer is formed of a transparent conductive material on a surface of the overcoat layer.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: November 13, 2012
    Assignee: Sony Corporation
    Inventors: Shuhei Yoshida, Shinichiro Tanaka, Joji Nishimura, Koji Yoshida, Keiji Takizawa, Masakatsu Higa
  • Publication number: 20120274163
    Abstract: A power unit includes a case, a first rotary electric machine arranged inside the case, a second rotary electric machine that is arranged parallel to the first rotary electric machine and that is arranged inside the case, a plurality of conductors that send electric power to the first rotary electric machine and the second rotary electric machine, and that receive electric power from the first rotary electric machine and the second rotary electric machine, and a cover member that covers a single opening provided in the case and communicating an inside of the case with an outside of the case, the plurality of conductors passing through the cover member. A valley shape is formed by an outer peripheral surface of the first rotary electric machine and an outer peripheral surface of the second rotary electric machine. The opening is provided in a portion of the case that faces the valley shape.
    Type: Application
    Filed: April 25, 2012
    Publication date: November 1, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinichi Matsumoto, Keiji Takizawa, Hiroshi Hoshina, Yasuhiro Yamaguchi, Masaaki Takemoto
  • Publication number: 20120126642
    Abstract: An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 24, 2012
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiko MIYAMOTO, Naoto KOSHINO, Hiroshi HOSHINA, Keiji TAKIZAWA, Ko HASHIMOTO, Tetsuo WAKITA
  • Patent number: 8125602
    Abstract: There is provided a liquid crystal display panel that includes an array substrate having at least a pixel electrode and a switching element for every pixel area in a display area on a transparent substrate, a color filter substrate in which a light shielding layer made of a resin is formed on a transparent substrate at least outside the display area and a color filter layer is formed to oppose the pixel electrode, and liquid crystal enclosed between the array substrate and the color filter substrate that are bonded by a seal material. A protection film having an opening, the opening being opened in the display area, is formed on the color filter substrate in the outside of the display area to cover at least the portion of the light shielding layer on which the seal material is formed.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: February 28, 2012
    Assignee: Sony Corporation
    Inventors: Hiroki Sugiyama, Tomoyuki Nakano, Keiji Takizawa
  • Patent number: 8096919
    Abstract: When a torque control value (TR) is larger than a threshold value and vehicular speed (SV) is lower than a threshold value an upper temperature limit setting unit sets the upper temperature limit of a motor generator at an upper temperature limit (TS2) higher than a normally set upper temperature limit (TS1). A torque limitation control controls limiting a torque of the motor generator, as based on a motor temperature (T) and the upper temperature limit set by the upper temperature limit setting unit.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: January 17, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiji Takizawa, Hiroshi Aihara
  • Patent number: 8089234
    Abstract: When a motor temperature exceeds a threshold value, a torque control unit reduces a torque control value for a motor generator. A torque limitation control unit determines from torque control value and vehicular speed whether limiting a torque by the torque control unit should be alleviated, and if so the torque limitation control unit activates a signal for a predetermined period of time. When the signal is activated, the torque control unit stops reducing the torque control value and fixes the torque control value to be constant.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: January 3, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiji Takizawa, Hiroshi Aihara
  • Publication number: 20110216272
    Abstract: An electro-optical display apparatus includes a display area in which sub-pixel columns formed of sub-pixels of the same color that are linearly arranged in a single direction are disposed in a stripe arrangement together with sub-pixel columns of other colors. An aperture ratio of each sub-pixel in at least one sub-pixel column located at one edge of the display area in an arrangement direction of the sub-pixel columns and at least one sub-pixel column located at another edge of the display area in the arrangement direction of the sub-pixel columns are configured to be lower than those of sub-pixels of the same color located in a center portion of the display area.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 8, 2011
    Applicant: SONY CORPORATION
    Inventors: Shuhei Yoshida, Keiji Takizawa
  • Patent number: 7982355
    Abstract: An interphase insulating member allowing reduction in size of a rotating electric machine is provided. The interphase insulating member includes a flat portion interposed between and insulating neighboring two phases of coil ends, and a three-dimensional portion protruding from the flat portion and guiding the coil. On a surface of the flat portion, epoxy resin layer is provided as a reinforcing member.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: July 19, 2011
    Assignees: Toyota Jidosha Kabushiki, Nitto Shinko Corporation
    Inventors: Keiji Takizawa, Masakazu Katoh, Jun Fujiki, Akihiro Oohashi, Masanori Imai, Yoshiki Takahashi, Yasuo Kashiwagi, Yoshihide Kitagawa
  • Patent number: 7936423
    Abstract: A liquid crystal display device 1 has subpixels 10 having a light-transmissive region 10a and a light-reflective region 10b. A color filter layer 50 corresponding to an identification pattern 70 that it is desired to be displayed when the liquid crystal display device 1's power is off is formed at the light-reflective regions 10b, so that even when the liquid crystal display device 1 is in the non-driven state, incident external light emerges as outgoing light having the colors of the color layers corresponding to the identification pattern, and hence the identification pattern can be displayed. Thus, any desired pattern can be displayed in the liquid crystal display device's non-driven state, so that a liquid crystal display device with extensive expression and superior display characteristics is provided.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: May 3, 2011
    Assignee: Sony Corporation
    Inventors: Kimitaka Kamijo, Keiji Takizawa, Toshinori Uehara, Tomoyuki Nakano
  • Publication number: 20110063548
    Abstract: A liquid crystal device includes: a first substrate; a second substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first electrode and a second electrode disposed on a side of the first substrate facing the liquid crystal layer; and a color filter and an electrostatic shielding layer disposed on a side of the second substrate facing the liquid crystal layer, the color filter including coloring layers of at least three different colors, the electrostatic shielding layer having an aperture formed therein corresponding to the coloring layer of at least one of the three different colors.
    Type: Application
    Filed: September 8, 2010
    Publication date: March 17, 2011
    Applicant: SONY CORPORATION
    Inventors: Shuhei Yoshida, Keiji Takizawa
  • Patent number: 7889294
    Abstract: An electro-optical device includes a pair of substrates that hold an electro-optical material therebetween and include a plurality of pixels each having a reflective display region and a transmissive display region; a reflective film that is provided in the reflective display region and has a flat surface in a portion of the reflective display region adjacent to the transmissive display region, the portion of the reflective display region serving as a first mirror-reflection region; and colored layers each of which is formed in only the first mirror-reflection region and the transmissive display region.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: February 15, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Kimitaka Kamijo, Tomoyuki Nakano, Keiji Takizawa, Tatsuya Kato
  • Patent number: 7791574
    Abstract: There is provided an electro-optical device including pixels arranged in a matrix, each pixel having a plurality of color-display sub-pixels corresponding to a plurality of colors and a monochrome-display sub-pixel. The color-display sub-pixel and the monochrome-display sub-pixel can perform gray-scale display independently. One of the color-display sub-pixel and the monochrome-display sub-pixel displays images in a transmissive mode in which light emitted from a light source is modulated, while the other sub-pixel displays images in a reflective mode in which light incident from outside is modulated.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: September 7, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Kimitaka Kamijo, Keiji Takizawa
  • Patent number: 7760297
    Abstract: An electro-optical device includes a plurality of sub-pixels each of which has a light transmitting region and a light reflecting region, colored layers being disposed so as to correspond to the plurality of sub-pixels, the colored layers having filter colors of a three primary color system and a filter color of a complementary color system other than the three-primary-color system, transmissive display being performed in the light transmitting region, reflective display being performed in the light reflecting region, and color display being performed in both reflective display and transmissive display.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: July 20, 2010
    Assignee: Sony Corporation
    Inventor: Keiji Takizawa