Patents by Inventor Yuuichi Takenaka

Yuuichi Takenaka 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: 10361224
    Abstract: A display device comprises: a display panel; a metallic wiring formed in the display panel; and a semiconductor integrated circuit element connected to the display panel through a UV curing anisotropy conductive film, wherein the semiconductor integrated circuit element includes a plurality of bumps, the metallic wiring is electrically connected to the bumps through the UV curing anisotropy conductive film, the metallic wiring includes a plurality of openings, and at least one of the bumps is disposed between two adjacent openings closest to each other in the plurality of openings.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: July 23, 2019
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Yuuichi Takenaka
  • Publication number: 20170104008
    Abstract: A display device comprises: a display panel; a metallic wiring formed in the display panel; and a semiconductor integrated circuit element connected to the display panel through a UV curing anisotropy conductive film, wherein the semiconductor integrated circuit element includes a plurality of bumps, the metallic wiring is electrically connected to the bumps through the UV curing anisotropy conductive film, the metallic wiring includes a plurality of openings, and at least one of the bumps is disposed between two adjacent openings closest to each other in the plurality of openings.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 13, 2017
    Inventor: Yuuichi TAKENAKA
  • Patent number: 8902394
    Abstract: Provided is a display device, including: a display panel which includes a thin film transistor substrate (SUB1) on which a terminal portion including a plurality of terminals (TR) is provided; and a drive circuit connected to the terminal portion, in which: the drive circuit includes: a flexible board (FB); and a semiconductor chip mounted on the flexible board; the flexible board (FB) includes a plurality of wirings (La) for connecting the semiconductor chip and the plurality of terminals (TR), respectively; and the plurality of wirings (La) each include: a first wiring portion (La1) which overlaps a corresponding one of the plurality of terminals (TR); and a second wiring portion (La2) which is positioned between the first wiring portion (La1) and the semiconductor chip, the first wiring portion (La1) being narrower than the second wiring portion (La2).
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: December 2, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Yuuichi Takenaka
  • Patent number: 8836675
    Abstract: An object of the present invention is to reduce the number of defective connections between wires for source drivers and video signal lines. The present invention provides a display device having a display panel with a number of scan signal lines and a number of video signal lines, first wiring boards having first circuit parts connected to the scan signal lines, second wiring boards having second circuit parts connected to the video signal lines, and a control circuit where two opposite sides of the display panel each have a number of first wiring boards, the other two sides each have a number of second wiring boards, and the second wiring boards each have a first wire for connecting the control circuit and a second circuit part, a second wire for connecting a second circuit part and a video signal line, and a third wire for connecting the control circuit and a first circuit part in one of the two regions between which the first wire and the second wire are provided.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: September 16, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Yuuichi Takenaka
  • Publication number: 20130187842
    Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Patent number: 8456603
    Abstract: The present invention prevents, when a COF which is connected with an external circuit is bent in a flat display device, the disconnection of lines on the COF. At a position where a line of the COF is connected to terminal portions of a TFT, and the line having a large width is branched into lines having a small width T1 to T3 or T4 to T6. By displacing line branching positions from each other as indicated by an arrow A and an arrow B, when the COF is bent or deformed, stress applied to the line branching positions can be dispersed thus preventing the disconnection of lines.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: June 4, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Yuuichi Takenaka
  • Patent number: 8400440
    Abstract: A display device includes a substrate, a display region having pixels on the substrate, a drive circuit element mounted on a peripheral portion of the substrate, a plurality of terminal portions formed on the peripheral portion and arranged on a mounting portion of the drive circuit element, and a plurality of wiring lines prolonged from the terminal portions to the outside of the mounting portion of the substrate. The terminal parts are arranged to two lines of the plurality of wiring lines along one end of the mounting portion, a plurality of bumps connected to each of the terminal portions by an anisotropic conductive film are formed on the plane facing the terminal portion of the drive circuit element, a part of the plurality bumps include a first bump and a second bump which is adjoined close to the first bump.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: March 19, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuuichi Takenaka, Takanori Nakayama
  • Publication number: 20120113072
    Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.
    Type: Application
    Filed: January 19, 2012
    Publication date: May 10, 2012
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Publication number: 20110292313
    Abstract: Provided is a display device, including: a display panel which includes a thin film transistor substrate (SUB1) on which a terminal portion including a plurality of terminals (TR) is provided; and a drive circuit connected to the terminal portion, in which: the drive circuit includes: a flexible board (FB); and a semiconductor chip mounted on the flexible board; the flexible board (FB) includes a plurality of wirings (La) for connecting the semiconductor chip and the plurality of terminals (TR), respectively; and the plurality of wirings (La) each include: a first wiring portion (La1) which overlaps a corresponding one of the plurality of terminals (TR); and a second wiring portion (La2) which is positioned between the first wiring portion (La1) and the semiconductor chip, the first wiring portion (La1) being narrower than the second wiring portion (La2).
    Type: Application
    Filed: May 25, 2011
    Publication date: December 1, 2011
    Inventor: Yuuichi TAKENAKA
  • Patent number: 7936570
    Abstract: The present invention provides a liquid crystal display device which can establish the reliable connection between a printed circuit board and a semiconductor device in spite of the simple constitution thereof. The liquid crystal display device includes a liquid crystal display panel, a printed circuit board arranged close to the liquid crystal display panel, and a semiconductor device arranged between the liquid crystal display panel and the printed circuit board in a striding manner. The semiconductor device includes a flexible printed circuit board and a semiconductor chip. The flexible printed circuit board includes a plurality of first terminals connected to the printed circuit board and a plurality of second terminals connected to a liquid-crystal-display-panel side.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 3, 2011
    Assignees: Hitachi Displays, Ltd., IPS Alpha Technology, Ltd.
    Inventors: Yuuichi Takenaka, Hiromitsu Sato, Takanori Sato, Kazumi Akiba, Yoshihiro Kazuma
  • Patent number: 7773187
    Abstract: The present invention provides a liquid crystal display device which can enhance the accuracy in feeding back a common potential applied to common voltage supply lines. A display panel includes a common bus line electrically connected to common electrodes and formed annularly on a periphery of the display region, a common sensing line for feeding back a voltage of the common bus line to a control printed circuit board, a scanning-signal-drive-circuit-use power source line for supplying electricity for driving a scanning signal drive circuit, and a common-voltage-supply-use line for supplying a common voltage to the common bus line. The common-voltage-supply-use line, the common sensing line and the scanning-signal-drive-circuit-use power source line are formed along one side of the display panel to which at least the scanning signal drive circuit is connected.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: August 10, 2010
    Assignees: Hitachi Displays, Ltd., IPS Alpha Technology, Ltd.
    Inventors: Yuuichi Takenaka, Ryutaro Oke, Masafumi Hirata
  • Patent number: 7751013
    Abstract: TFTs are formed on a substrate. An interlayer insulation film is formed on the substrate to cover the TFTs. Lower layer portions of SD lines formed of a multi-layered film which are formed on the interlayer insulation film constitute a lower electrode of an organic EL layer. An uppermost layer of the SD line is formed of a chemically stable metal oxide film, and the SD layer is used as it is. On the other hand, as a lower electrode of an organic EL layer, an upper layer of the SD line is removed and an Al—Si, alloy film of the SD line is used. Due to such a constitution, it is possible to reduce a cost by shortening steps while holding the performance and the reliability of organic EL.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: July 6, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Patent number: 7705951
    Abstract: A liquid-crystal display device is provided which is improved in image quality by supplying a reference voltage signal to a liquid-crystal display panel through a multiplicity of distributed supply paths. The liquid-crystal display device includes a liquid-crystal display panel and a semiconductor device connected to a part of a periphery of the liquid-crystal display panel. The liquid-crystal display panel has a plurality of signal lines for supplying various signals to address pixels, on one of a pair of substrates arranged oppositely through a liquid crystal. The signal lines include a common bus line for supplying a reference voltage signal. The semiconductor device is structured with a semiconductor chip mounted on a flexible board. The flexible board at least has a line leading to a terminal for supplying a signal to the signal line of the liquid-crystal display panel through the semiconductor chip.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: April 27, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuuichi Takenaka, Kikuo Ono
  • Publication number: 20100053127
    Abstract: An object of the present invention is to reduce the number of defective connections between wires for source drivers and video signal lines. The present invention provides a display device having a display panel with a number of scan signal lines and a number of video signal lines, first wiring boards having first circuit parts connected to the scan signal lines, second wiring boards having second circuit parts connected to the video signal lines, and a control circuit where two opposite sides of the display panel each have a number of first wiring boards, the other two sides each have a number of second wiring boards, and the second wiring boards each have a first wire for connecting the control circuit and a second circuit part, a second wire for connecting a second circuit part and a video signal line, and a third wire for connecting the control circuit and a first circuit part in one of the two regions between which the first wire and the second wire are provided.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 4, 2010
    Inventor: Yuuichi TAKENAKA
  • Patent number: 7646464
    Abstract: The present invention can easily inspect the connection between a flexible printed circuit board and terminals. In a display device which includes a display panel which forms a plurality of lines as first lines on a terminal portion thereof, and a film-like substrate which forms a plurality of lines as second lines thereon, the display panel has a determination terminal which is arranged close to the terminal portion, has a width larger than a width of the terminal, and has a portion thereof removed, the film-like substrate forms third lines and fourth lines arranged close to the second lines thereon, the third lines face the determination terminal, and the fourth lines face the removed portion of the determination terminal from which the portion is removed.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: January 12, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventor: Yuuichi Takenaka
  • Publication number: 20090237588
    Abstract: An object of the present invention is to provide a technology which makes it possible for the heat from parts having high heat emission mounted on a printed circuit board provided between an upper frame member and a side of the liquid crystal display panel or the backlight to be released efficiently in liquid crystal display devices where the above described parts are mounted.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 24, 2009
    Inventors: Yuuichi Takenaka, Shinji Yasukawa, Yukihide Ode
  • Publication number: 20090102826
    Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.
    Type: Application
    Filed: December 18, 2008
    Publication date: April 23, 2009
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Publication number: 20080291379
    Abstract: A liquid-crystal display device is provided which is improved in image quality by supplying a reference voltage signal to a liquid-crystal display panel through a multiplicity of distributed supply paths. The liquid-crystal display device includes a liquid-crystal display panel and a semiconductor device connected to a part of a periphery of the liquid-crystal display panel. The liquid-crystal display panel has a plurality of signal lines for supplying various signals to address pixels, on one of a pair of substrates arranged oppositely through a liquid crystal. The signal lines include a common bus line for supplying a reference voltage signal. The semiconductor device is structured with a semiconductor chip mounted on a flexible board. The flexible board at least has a line leading to a terminal for supplying a signal to the signal line of the liquid-crystal display panel through the semiconductor chip.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 27, 2008
    Inventors: Yuuichi TAKENAKA, Kikuo ONO
  • Patent number: 7449787
    Abstract: A display device includes a substrate having plural signal lines connected to switching elements which are formed in an image display region, and plural terminals connected to respective ones of the signal lines. The terminals include a first group arranged at an image display region side and a second group arranged remote from the image display region side, the terminals being connected to output terminals of a driving circuit. The output terminals include a first group arranged at the image display region side and a second group arranged remote from the image display region side. The first group of terminals connect the first group of output terminals, and the second group of terminals connect the second group of output terminals. An area of a respective output terminal of the second group is larger than an area of a respective output terminal of the first group.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: November 11, 2008
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Hiroshi Yamate, Yuuichi Takenaka
  • Publication number: 20080266506
    Abstract: The present invention provides a liquid crystal display device which can enhance the accuracy in feeding back a common potential applied to common voltage supply lines. A display panel includes a common bus line electrically connected to common electrodes and formed annularly on a periphery of the display region, a common sensing line for feeding back a voltage of the common bus line to a control printed circuit board, a scanning-signal-drive-circuit-use power source line for supplying electricity for driving a scanning signal drive circuit, and a common-voltage-supply-use line for supplying a common voltage to the common bus line. The common-voltage-supply-use line, the common sensing line and the scanning-signal-drive-circuit-use power source line are formed along one side of the display panel to which at least the scanning signal drive circuit is connected.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 30, 2008
    Inventors: Yuuichi TAKENAKA, Ryutaro Oke, Masafumi Hirata