Patents by Inventor Kikuo Ono

Kikuo Ono 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: 20080062371
    Abstract: A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.
    Type: Application
    Filed: October 26, 2007
    Publication date: March 13, 2008
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Patent number: 7342353
    Abstract: The present invention provides a display device which includes signal lines which are formed on an upper surface side of a substrate, an insulation film which is formed such that the film covers the signal lines except for terminal portions of the signal lines, and conductive layers which extend in the extension direction of the signal lines such that the terminal portions traverse the terminal portions. In such a display device, gaps are formed between respective sides of the conductive layer parallel to the extension direction of the conductive layer and the insulation film and holes are formed in the signal lines at portions corresponding to the gaps along the extension direction of the signal lines.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: March 11, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takahiro Ochiai, Kikuo Ono, Ryutaro Oke
  • Publication number: 20080057606
    Abstract: There is provided a liquid crystal display device in which the wiring resistivity of signal lines is reduced. The liquid crystal display device includes substrates disposed in opposition to each other with a liquid crystal interposed therebetween, a thin film transistor to be driven by a scanning signal supplied from a gate signal line, and a pixel electrode to be supplied with a video signal from a drain signal line via the thin film transistor, the thin film transistor and the pixel being provided in each pixel area on a liquid-crystal-side surface of one of the substrates. The gate signal line is made of a multi-layered structure including at least an ITO film formed on the liquid-crystal-side surface and a Mo layer formed to overlie the ITO film.
    Type: Application
    Filed: October 17, 2007
    Publication date: March 6, 2008
    Inventors: Ryuutarou Oke, Yoshiaki Nakayoshi, Kikuo Ono
  • Publication number: 20080057607
    Abstract: There is provided a liquid crystal display device in which the wiring resistivity of signal lines is reduced. The liquid crystal display device includes substrates disposed in opposition to each other with a liquid crystal interposed therebetween, a thin film transistor to be driven by a scanning signal supplied from a gate signal line, and a pixel electrode to be supplied with a video signal from a drain signal line via the thin film transistor, the thin film transistor and the pixel being provided in each pixel area on a liquid-crystal-side surface of one of the substrates. The gate signal line is made of a multi-layered structure including at least an ITO film formed on the liquid-crystal-side surface and a Mo layer formed to overlie the ITO film.
    Type: Application
    Filed: October 17, 2007
    Publication date: March 6, 2008
    Inventors: Ryuutarou Oke, Yoshiaki Nakayoshi, Kikuo Ono
  • Publication number: 20080043415
    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: October 2, 2007
    Publication date: February 21, 2008
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Publication number: 20080043193
    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: October 2, 2007
    Publication date: February 21, 2008
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Publication number: 20080042158
    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: October 2, 2007
    Publication date: February 21, 2008
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Publication number: 20080030514
    Abstract: There is disclosed a display device which is driven by a two-field drive scheme. That is, brightness corresponding to one frame of image is obtained in two scans. The display screen is divided into plural regions. One of the regions is driven by a black insertion method. The other region is driven by a pseudo-normal drive method. In this method, an image based on the same display data is displayed twice. The display data is converted such that the gamma characteristics of the pseudo-normally driven region are substantially equal to the gamma characteristics of the region driven by the black insertion method. If necessary, each individual pixel in the boundary region between the region driven by the black insertion method and the region driven by the pseudo-normal drive method is displayed black or white. The boundary region has a width of at least two pixels.
    Type: Application
    Filed: January 11, 2007
    Publication date: February 7, 2008
    Inventors: Yoshihisa Ooishi, Junichi Maruyama, Kikuo Ono
  • Patent number: 7327427
    Abstract: In a liquid crystal display device, a counter electrode CT is arranged above and is overlapped to a drain line DL by way of an insulation layer, wherein a width of the counter electrode CT is set larger than a width of the drain line DL, and a recessed groove AL is formed between an end periphery of the counter electrode CT and the drain line DL along the extending direction of the counter electrode CT and the drain line DL.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: February 5, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kikuo Ono, Takahiro Ochiai
  • Publication number: 20080013028
    Abstract: A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween, a plurality of gate signal lines made of metal and a plurality of drain signal lines made of metal, wherein the gate signal line and the drain signal line have a first overlapping region, and a plurality of counter voltage signal lines, wherein the counter voltage signal line and the drain signal line have a second overlapping region. A plurality of pixel regions are defined by neighboring gate signal lines and drain signal lines, and a pixel electrode is formed on the first substrate in each pixel region. A thin film transistor having a semiconductor layer is formed on the gate signal line, and the semiconductor layer at least overlaps with the drain signal line at the first overlapping region and the second overlapping region.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 17, 2008
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Patent number: 7304708
    Abstract: A liquid crystal display device includes at least a common electrode line, a common electrode and a pixel electrode in each pixels, the common electrode line comprising a first common electrode line which extends in the extending direction of the gate lines and a second common electrode line which extends in the extending direction of the drain lines in the pixel region, the first common electrode line and the second common electrode line are spaced apart from each other by way of a first insulating film, the first common electrode line and the second common electrode line are connected via an opening portion formed in the first insulating film, and a second insulating film is formed over the opening portion.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: December 4, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Takahiro Ochiai, Ryutaro Oke
  • Patent number: 7295268
    Abstract: In a TFT type liquid crystal display device comprising first and second transparent substrates and a liquid crystal layer which is sandwiched between the first and second substrates, the first substrate includes a plurality of video signal lines, a plurality of scanning signal lines and a plurality of pixel regions which are formed as regions surrounded by the video signal lines and the scanning signal lines, each pixel region includes at least one active element, one pixel electrode and one common electrode, and color filter layers are formed between the pixel electrodes and the liquid crystal layer. The liquid crystal display device is substantially characterized in that the common electrodes are formed as layers above the color filters, the pixel electrodes are formed as layers below the color filters, and the color filters are superposed at least on the whole surfaces of the pixel electrodes in the pixel region.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: November 13, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Takahiro Ochiai, Ryutaro Oke, Yoshiaki Nakayoshi, Nagatoshi Kurahashi
  • Publication number: 20070258019
    Abstract: A liquid crystal display device includes a first electrode to which a signal is supplied through a first switching element and a second electrode to which a signal is supplied through a second switching element in each pixel region on a substrate, wherein liquid crystal is driven in response to a potential difference between the first electrode and the second electrode. In such a constitution, the first electrode is formed as one electrode of a first holding capacitance which is constituted by sandwiching an insulation film between the first electrode and a signal line and, at the same time, the second electrode is formed as one electrode of a second holding capacitance which is constituted by sandwiching an insulation film between the second electrode and a signal line.
    Type: Application
    Filed: July 5, 2007
    Publication date: November 8, 2007
    Inventors: Kikuo Ono, Ryutaro Oke
  • Publication number: 20070252936
    Abstract: A liquid crystal display device with a planar counter electrode formed on the first substrate in each pixel region, a pixel electrode formed on the counter electrode by way of an insulation layer, the pixel electrode formed of a first pixel electrode and a second pixel electrode in the pixel region, the first pixel electrode and the second pixel electrode have a large number of slits which are arranged in parallel in the electrodes and the extending direction of the slits is different from both extending directions of the gate lines and the drain lines, and the neighboring sides of the first and the second pixel electrodes are arranged to be parallel to each other, and a portion between the neighboring sides of the first and the second pixel electrodes is positioned above the counter electrode.
    Type: Application
    Filed: June 29, 2007
    Publication date: November 1, 2007
    Inventors: Kikuo Ono, Ikuko Mori, Ryutaro Oke, Hiroyuki Yarita
  • Patent number: 7289181
    Abstract: An interconnecting structure and a pixel structure suited to large-sized screens are formed. A counter line/electrode is formed on a TFT substrate, and the counter line/electrode is made of a stacked structure film in which a layer made of aluminum or an alloy essentially containing aluminum is covered with a high-melting point metal film, and a transparent conductive film which covers the stacked structure film.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: October 30, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Toshiki Kaneko, Kazumi Fujii, Kikuo Ono
  • Publication number: 20070247413
    Abstract: A display device includes an LUT storing circuit and an LUT holding circuit, a representative point selecting circuit, and a compensation amount calculating circuit. The storing and holding circuits store and hold not compensation amounts of all points but compensation amounts of representative points in a lookup table. The representative point selecting circuit refers to a compensation amount for a representative point in the lookup table and three representative points neighboring an interpolating object point for deriving a compensation amount of each interpolating object point except the representative points in the lookup table. The compensation amount calculating circuit calculates the compensation amount of each interpolating point except the representative points by performing an interpolating operation with respect to the compensation amounts of the three neighboring representative points.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Inventors: Junichi Maruyama, Yoshihisa Ooishi, Kikuo Ono
  • Patent number: 7271870
    Abstract: A display device includes a substrate, a gate line formed over the substrate, a first insulating film formed over the substrate and the gate line, a semiconductor film formed over the first insulating film, a drain electrode formed over the semiconductor film, a source electrode formed over the semiconductor film, a data line connected to the drain electrode and formed over the first insulating film, a second insulating film formed over the source electrode and the data line, a pixel electrode electrically connected to the source electrode and formed over the second insulating film, and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film. The transparent conductive film includes a first portion which none of the first insulating film and the second insulating film underlie.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: September 18, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • Patent number: 7271869
    Abstract: A liquid crystal display device having first and second substrates with a liquid crystal layer therebetween, a plurality of gate signal lines and a plurality of drain signal lines, a plurality of pixel regions defined by neighboring gate signal lines and drain signal lines, and a pixel electrode in each pixel region. The drain signal line has a metal layer and another layer formed by a transparent conductor, and the another layer is electrically connected to the metal layer. The pixel electrode is made of a transparent conductor, and a transparent conductor of the pixel electrode and the transparent conductor of the drain signal line are of the same material.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: September 18, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Patent number: 7256854
    Abstract: A liquid crystal display device having first and second substrates with a liquid crystal layer therebetween, a plurality of gate signal lines and a plurality of drain signal lines, a plurality of counter voltage signal lines, a plurality of pixel regions defined by neighboring gate signal lines and drain signal lines, a counter electrode and a pixel electrode enabling formation of an electric field, and an orientation film being formed on the first substrate. The pixel electrode has a plurality of slits overlaps the counter electrode with an insulating layer therebetween. A pair of edges of the counter electrode and pixel electrode extend in parallel to the gate signal line and another pair of edges of the counter electrode and the pixel electrode extend in parallel to the drain line.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: August 14, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Patent number: RE39798
    Abstract: A liquid crystal display device and a manufacturing method therefor are provided where the number of processes for manufacturing TFT substrates can be decreased and a high production yield can be attained. To attain these objects, an image signal bus-line includes at least a transparent conductive film and a semiconductor layer. A pattern of the transparent conductive film extends up to a thin film transistor to form its drain electrode, and a pattern of a semiconductor layer extends up to the transistor to form its source electrode. By virtue of these arrangements, the thin film transistor substrate can be manufactured using as little as three or four photolithography processes.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: August 28, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Kazuhiro Ogawa, Takashi Suzuki, Kouichi Anno, Hiroki Sakuta, Makoto Tsumura, Masaaki Kitajima, Genshiro Kawachi