Patents by Inventor Kenji Nakao

Kenji Nakao 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: 8823634
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel, a first illumination unit configured to illuminate the liquid crystal display panel with light which is emitted in a first emission direction, a second illumination unit configured to illuminate the liquid crystal display panel with light which is emitted in a second emission direction different from the first emission direction, and a controller configured to control the liquid crystal display panel, the first illumination unit and the second illumination unit in a first display mode in which 3D display with power saving is effected, and in a second display mode in which 3D display with a wider viewing angle than in the first display mode is effected.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: September 2, 2014
    Assignee: Japan Display Inc.
    Inventors: Daiichi Suzuki, Kenji Nakao, Kazuhiro Nishiyama, Emi Higano
  • Patent number: 8803382
    Abstract: A highly reliable rectifying device of a vehicle alternator capable of improving the vibration resistance of a diode. A connection lead 33d of a diode 33 included in a rectifying device includes a linear part 33f extended in parallel from a metallic base 33b, and a bent part 33g bent 90° or more substantially like an arc from the linear part 33f. The bending radius R of the bent part 33g is set to a value larger than a separation distance w in a horizontal direction between the terminal of the linear part 33f and the distal part of the connection lead 33d.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: August 12, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroya Ikuta, Hirotaka Kimata, Kazunori Tanaka, Kenji Nakao
  • Patent number: 8780303
    Abstract: According to one embodiment, a liquid crystal apparatus includes a first liquid crystal panel including a pair of substrates, and a dispersed liquid crystal held between the pair of substrates, and an active mirror placed behind the first liquid crystal panel, and configured to switch a first state in which linearly polarized light whose polarizing direction is a second direction is transmitted, and a second state in which the linearly polarized light whose polarizing direction is the second direction is absorbed or reflected.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: July 15, 2014
    Assignee: Japan Display Inc.
    Inventors: Kenji Nakao, Akio Murayama, Yasushi Kawata
  • Patent number: 8736588
    Abstract: In one embodiment, a liquid crystal display device includes first and second areas respectively having a gate line group in an active area, and a dummy gate line group arranged on an outside of the active area. A driving circuit selects the gate lines of the gate line group and the dummy gate lines of the dummy gate line group one by one in the first and second areas. The driving circuit is independently controlled for the first and second areas. The gate lines are scanned from a center portion of the active area to the dummy gate line side in the first and second areas, respectively. An image signal and a non-image signal are written within one-frame period in the first and second areas.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: May 27, 2014
    Assignee: Japan Display Central Inc.
    Inventors: Yukio Tanaka, Kenji Nakao
  • Patent number: 8711293
    Abstract: In one embodiment, a pair of liquid crystal shutter glasses include a first liquid crystal shutter and a second liquid crystal shutter. The first and second liquid crystal shutters are switched to a transmissive state by turns. The respective first and second liquid crystal shutters include a first electrode substrate and a second electrode substrate opposing the first electrode substrate. An OCB (Optically Compensated Bend) mode liquid crystal layer is held between the first and second electrode substrates. The first electrode substrate includes a first electrode and a second electrode arranged adjacent to the first electrode. The first and second electrodes respectively include a side opposing each other and a plurality of projecting portions provided to the respective opposing sides of the first and second electrodes alternately.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 29, 2014
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Fukami, Shigesumi Araki, Tetsuya Kojima, Toshiyuki Higano, Kenji Nakao
  • Patent number: 8686989
    Abstract: In one embodiment, the liquid crystal shutter is equipped with a first liquid crystal panel in the OCB mode to control the transmissivity of the light entering into left eye and a second liquid crystal panel in the OCB mode to control the transmissivity of the light entering into right eye, and a drive portion to control the transmissivity. The drive portion applies a normal voltage of a normal drive in a pulse shape and a retention voltage having a pulse shape with lower frequency than the normal voltage or lower voltage than normal voltage to the first liquid crystal panel and the second liquid crystal panel. The drive portion switches between the normal drive and the retention drive while maintaining bend alignment state.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: April 1, 2014
    Assignee: Japan Display Central Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki, Kazuhiro Nishiyama, Tetsuya Kojima, Kenji Nakao
  • Publication number: 20140085356
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter substrate, a liquid crystal layer and a driving unit. The driving unit is configured to perform polarity inversion driving by applying, to the pixel electrode, positive and negative video signals. When applying the video signals to the pixel electrode, the driving unit superposes a correction signal corresponding to a polarity inversion frequency and the gray level on the video signals in advance.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 27, 2014
    Applicant: Japan Display Inc.
    Inventors: Yukio TANAKA, Toshiyuki HIGANO, Kenji NAKAO, Hirofumi WAKEMOTO
  • Publication number: 20140078453
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first electrode, a stage including an electrode formation surface, a switching element, a second electrode and a first vertical alignment film. The second substrate includes a third electrode and a second vertical alignment film. The electrode formation surface is positioned closer to the second substrate than a portion of the first vertical alignment film, which opposes the first electrode.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: Japan Display Inc.
    Inventors: Emi HIGANO, Mitsutaka Okita, Daiichi Suzuki, Kenji Nakao, Kazuhiro Nishiyama
  • Patent number: 8674949
    Abstract: A liquid crystal display apparatus includes a display panel configured to have a plurality of scanning lines for which liquid crystal display elements each containing an optical input device and a display pixel are arranged, respectively, a backlight configured to be arranged facing the display panel to illuminate the display panel, and a control part configured to control writing into the display pixel and reading of a detection signal of the optical input device, wherein the control part displays an external light detection image substantially shielding light from the backlight on the display pixels throughout a first period of a frame period, and displays a display image on the display pixels throughout a second period of the frame period.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: March 18, 2014
    Assignee: Japan Displays Inc.
    Inventors: Kenji Nakao, Yasuyuki Tsuji, Mitsutaka Okita, Shigesumi Araki
  • Publication number: 20130258223
    Abstract: According to one embodiment, an apparatus includes an array substrate including gate lines and auxiliary capacitance lines extending along a row, signal lines extending along a column, a semiconductor that intersects the gate line via an insulating layer and confronts the auxiliary capacitance line, a contact electrode for electrically connecting the semiconductor to the pixel electrode, a counter substrate, and a liquid crystal layer sandwiched between the substrates. In the pixels disposed side by side in a direction where the gate line extends, the positions of center of gravity of openings surrounded by the gate lines, the signal lines, the auxiliary capacitance line, and ends of the contact electrode are the same in a direction where the signal line extends.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 3, 2013
    Inventors: Yukio TANAKA, Kenji Nakao, Daiichi Suzuki
  • Publication number: 20130241975
    Abstract: According to one embodiment, a liquid crystal display includes first light sources disposed side by side in a scan direction, a first light guide to guide the light emitted from the first light sources in a first direction, second light sources disposed side by side in the scan direction, a second light guide to guide the light emitted from the second light sources in a second direction, and a light source driver to independently turn on and turn off the first and second light sources. The light source driver sequentially turns on and turns off the first light sources in a first period. The light source driver sequentially turns on and turns off the second light sources in a second period.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 19, 2013
    Inventors: Shigesumi ARAKI, Kazuhiro Nishiyama, Noriyoshi Kanda, Kenji Nakao
  • Patent number: 8500856
    Abstract: In a method of capturing carbon dioxide in a gas, carbon dioxide in a gas is adsorbed to the hybrid adsorbent prepared by mixing an adsorbent with iron oxide nanoparticles, microwaves are irradiated to the hybrid adsorbent and the carbon dioxide adsorbed to the hybrid adsorbent is desorbed from the hybrid adsorbent, and the carbon dioxide desorbed from the hybrid adsorbent is captured.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: August 6, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kenji Nakao, Kimihito Suzuki, Kenichiro Fujimoto, Hatsuo Taira
  • Publication number: 20130141411
    Abstract: According to one embodiment, a display includes pixel electrodes arranged in a matrix, gate lines extending along rows, signal lines extending along columns, storage capacitance lines extending along the rows to superpose a voltage on the pixel electrodes, a counterelectrode opposed to the pixel electrodes, a driver to drive the gate lines, the signal lines, and the storage capacitance lines, and a controller to control the driver. The controller sequentially drives the gate lines to write from the signal lines to the pixel electrodes and, after the write to the pixel electrodes, changes a potential of each of the storage capacitance lines to cause alignment of the liquid crystal layer to make a transition from splay alignment to bend alignment.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 6, 2013
    Inventors: Yukio TANAKA, Daiichi SUZUKI, Kenji NAKAO
  • Publication number: 20130135187
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel, a first illumination unit configured to illuminate the liquid crystal display panel with light which is emitted in a first emission direction, a second illumination unit configured to illuminate the liquid crystal display panel with light which is emitted in a second emission direction different from the first emission direction, and a controller configured to control the liquid crystal display panel, the first illumination unit and the second illumination unit in a first display mode in which 3D display with power saving is effected, and in a second display mode in which 3D display with a wider viewing angle than in the first display mode is effected.
    Type: Application
    Filed: November 26, 2012
    Publication date: May 30, 2013
    Inventors: Daiichi Suzuki, Kenji Nakao, Kazuhiro Nishiyama, Emi Higano
  • Patent number: 8451206
    Abstract: A liquid crystal display device includes a liquid crystal display panel (LCD panel), an area light source device which illuminates the LCD panel, a driving unit which drives the LCD panel and the area light source device, and a control unit which controls the driving unit. The LCD panel includes display pixels. The area light source device includes plural kinds of light sources which are successively turned on in one frame period. The control unit includes means for controlling the driving unit in a manner to execute video signal write and reset signal write after the video signal write, in a period in which one of the plural kinds of light sources is turned on in the one frame period. The video signal write and the reset signal write are executed with the same polarity, and a polarity of potential of the display pixels is reversed between frame periods.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: May 28, 2013
    Assignee: Japan Display Central Inc.
    Inventors: Yukio Tanaka, Kenji Nakao, Tetsuo Fukami
  • Publication number: 20130114015
    Abstract: According to one embodiment, a display device includes an array substrate including pixel electrodes arranged in a matrix, gate lines and auxiliary capacitance lines extending a first direction, signal lines extending a second direction, and a driving circuit configured to drive the gate lines, the signal lines, and the auxiliary capacitance lines, a counter substrate arranged opposite the array substrate, a liquid crystal layer held between the substrates, and a controller configured to control the driving circuit in such a manner that a polarity of a signal supplied to each of the signal lines varies in units of horizontal periods during a frame period when the polarity control signal for the first scan is identical to the polarity control signal for the second scan.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 9, 2013
    Inventors: Yukio Tanaka, Daiichi Suzuki, Kenji Nakao
  • Patent number: 8416167
    Abstract: A liquid crystal display device of an OCB mode includes a liquid crystal layer held between an array substrate and a counter-substrate, and a display section composed of display pixels arrayed in a matrix. The array substrate includes pixel electrodes which are disposed in association with the display pixels. The counter-substrate includes a counter-electrode opposed to the pixel electrodes. The substrates include a pair of alignment films which are disposed on the pixel electrodes and the counter-electrode, respectively, and are subjected to rubbing treatment to control an alignment state of liquid crystal molecules included in the layer. A transition-nucleus formation section, which generates an electric field for transitioning the alignment state of the liquid crystal molecules included in the layer from a non-display state to a display state, is provided on a terminal-end side of a rubbing direction of each of the alignment films in each of the display pixels.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: April 9, 2013
    Assignee: Japan Display Central Inc.
    Inventors: Tetsuo Fukami, Midori Tsukane, Kenji Nakao
  • Patent number: 8411013
    Abstract: A display device includes a circuit which is configured to execute such control that write of a non-video signal in pixels is executed in the first period, write of a video signal in the pixels is executed in the second period which partly overlaps the first period, write of the video signal, in the pixels is executed in the third period which partly overlaps the second period, the write of the non-video signal and the write of the video signal are alternately executed in units of one horizontal cycle or horizontal cycles in a period in which the first period overlaps the second period, and the write of the video signal corresponding to the second period and the third period are alternately executed in units of one horizontal cycle or horizontal cycles in a period in which the second period overlaps the third period.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: April 2, 2013
    Assignee: Japan Display Central Inc.
    Inventors: Yukio Tanaka, Kenji Nakao, Tetsuo Fukami, Kazuhiro Nishiyama
  • Patent number: 8284363
    Abstract: A device includes a substrate including a first insulating substrate, a first electrode located on the first insulating substrate, and a second electrode located between the first insulating substrate and the first electrode via an insulating underlayer interposed between the second and the first electrode, a substrate including a second insulating substrate and a third electrode on the second insulating substrate, a liquid crystal layer which is held between the first and the third electrode and which exhibits a transition from a first state to a second state in an initializing process, and a voltage supply unit which supplies, a first voltage to the first and the second electrodes and a second voltage to the third electrode, wherein the first electrode includes a transition nucleus forming section which forms nuclei of the transition in the liquid crystal layer on the basis of the respective voltages supplied to the respective electrodes.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: October 9, 2012
    Assignees: Japan Display Central Inc., Kabushiki Kaisha Toshiba
    Inventors: Kenji Nakao, Hirofumi Wakemoto, Tetsuya Kojima, Tetsuo Fukami, Yuko Kizu, Rei Hasegawa, Yukio Kizaki
  • Publication number: 20120249909
    Abstract: According to one embodiment, an array substrate includes auxiliary capacitance electrodes, auxiliary capacitance lines, signal lines, and pixel electrodes. The auxiliary capacitance electrode connected to one of the pixel electrodes adjacent to each other in a column direction and the auxiliary capacitance electrode connected to the other pixel electrode are opposed to the same auxiliary capacitance line, and extend in a row direction by intersecting the signal line.
    Type: Application
    Filed: March 26, 2012
    Publication date: October 4, 2012
    Inventors: Yukio TANAKA, Kenji Nakao