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).

  • Liquid crystal display device having particular pixel region
    Patent number: 7411647
    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: Grant
    Filed: June 29, 2007
    Date of Patent: August 12, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Kikuo Ono, Ikuko Mori, Ryutaro Oke, Hiroyuki Yarita
  • Display device and manufacturing method thereof
    Publication number: 20080186442
    Abstract: A display device with a substrate, a terminal portion, and the terminal portion have at least a portion formed with a first transparent conductive film and a second transparent conductive film, and the first transparent conductive film is exposed from the second transparent conductive film at a part of the portion, and crystallinity of the first transparent conductive film is higher than that of the second transparent conductive film.
    Type: Application
    Filed: March 27, 2008
    Publication date: August 7, 2008
    Inventors: Hiroyuki Yarita, Kikuo Ono
  • LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20080174729
    Abstract: A liquid crystal display device is provided which includes first and second substrates with liquid crystal therebetween. Gate lines and drain lines are formed on the first substrate with pixel regions defined by the gate signal lines and drain signal lines. Each pixel region includes a pixel electrode and a counter electrode formed in different layers from one another, with the counter layer being formed in a layer closer to the liquid crystal layer than the pixel electrode.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 24, 2008
    Inventors: Masayuki Ohta, Masahiro Ishi, Kikuo Ono, Nobuyuki Suzuki
  • Liquid crystal display device
    Patent number: 7403255
    Abstract: Below a transparent pixel electrode, an opaque pixel electrode is arranged while sandwiching an insulation film between the transparent pixel electrode and the opaque pixel electrode. A common electrode is arranged below the opaque pixel electrode thus forming a holding capacitance between the common electrode and an opaque metal electrode. In case when the pixel is divided into four or more portions, an interval between the pixel electrode and the common electrode is set to an unequal pitch size or an unequal electrode width within one pixel.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: July 22, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Ryutaro Oke, Takahiro Ochiai, Hirotaka Imayama
  • Liquid Crystal Display Device
    Publication number: 20080170194
    Abstract: A liquid crystal display device includes a pair of substrates which face each other with a liquid crystal layer therebetween, a plurality of gate signal lines and a plurality of drain signal lines, and a plurality of pixel regions which are formed on one substrate. A planar counter electrode which is formed on each pixel region, and a pixel electrode having a plurality of slits is formed in overlapping relation with the counter electrode. A first contact hole is provided for connecting the pixel electrode and a source electrode, and a connection line is provided for connecting the counter electrode of one pixel region and the counter electrode of an adjacent next pixel region. The counter electrode has a notch in the position of the first contact hole.
    Type: Application
    Filed: March 20, 2008
    Publication date: July 17, 2008
    Inventors: Kikuo ONO, Ikuko Mori, Ryutaro Oke, Hiroyuki Yarita
  • Active matrix type liquid crystal display device
    Publication number: 20080158462
    Abstract: A display device with a plurality of gate signal lines extended in the first direction; a plurality of drain signal lines extended in the second direction; a plurality of pixel regions in a state that each pixel region includes a switching device, a pixel electrode which is connected with the drain signal line and a counter electrode. The counter electrode is formed with respect to the pixel electrode by way of an insulation film and is formed every pixel. The pixels include first pixels and second pixels, wherein only the first pixels have a counter voltage signal line which extends in the first direction, and the counter voltage signal line is connected with the counter electrodes in the first pixels. Further, the counter electrodes of the first pixels and the counter electrodes of the second pixels are electrically connected with each other using conductive stride over the gate signal line.
    Type: Application
    Filed: February 28, 2008
    Publication date: July 3, 2008
    Inventors: Akira Matsuoka, Kikuo Ono
  • Display Device and Display System
    Publication number: 20080158212
    Abstract: A display device and system are disclosed, wherein the display system is so configured that an n-fold rate increasing circuit is arranged with a signal generating device instead of with the display device to realize a low-cost n-fold rate impulse-type drive. The n-fold rate display data is output to the display device from the signal generating device, and the display device includes a circuit to subject the input n-fold rate display data to the data conversion process for the n-fold rate impulse drive. In addition to the n-fold rate display data, an identification signal for identifying the position of the turn of the frames of the original video signal is input to the display device to prevent the erroneous data conversion operation.
    Type: Application
    Filed: December 6, 2007
    Publication date: July 3, 2008
    Inventors: Junichi Maruyama, Yoshihisa Ooishi, Kikuo Ono, Takashi Shoji
  • Liquid crystal display device
    Publication number: 20080158125
    Abstract: In a driving method capable of dot inversion without an increase in power consumption of an IC, measures are taken to deal with the lack of time for wiring data signals, when the screen is enlarged and the number of pixels increases, or when the frame frequency increases. In order to obtain the same effect as the case of the dot inversion, the pixels are arranged in a staggered arrangement in which the polarity inversion of the data signal is performed with the same frequency as in the column-by-column inversion. In order to deal with the lack of time for writing data signals because of large screen or other reasons, preliminary writing is performed when the scan line of the previous row prior to the scan line in which the data signal is to be written is selected.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 3, 2008
    Inventors: Ikuko Mori, Kikuo Ono
  • Display device
    Patent number: 7391397
    Abstract: A display device such as liquid crystal display device which restrains the entrance of static electricity into a scanning signal driver circuit or a video signal driver circuit includes a pair of substrates, a signal line, a capacitance line and a counter voltage line formed on one substrate of the pair of substrate, a pixel including a thin film transistor connected to the signal line, a pixel electrode connected to the thin film transistor and a counter electrode connected to the counter voltage line, a driver circuit formed on the one substrate and connected to the signal line and an interconnection layer disposed between the pixel and the driver circuit. At least one of the capacitance line and the counter voltage line is connected to the interconnection layer between the driver circuit and the pixel.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: June 24, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Tomohiko Sato, Takahiro Ochiai, Kikuo Ono, Ryutaro Oke, Norio Mamba
  • Liquid crystal display device and method of making same
    Patent number: 7375786
    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: January 25, 2006
    Date of Patent: May 20, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • Display device and manufacturing method thereof
    Patent number: 7369205
    Abstract: A display device with a substrate, a terminal portion, and the terminal portion have at least a portion formed with a first transparent conductive film and a second transparent conductive film, and the first transparent conductive film is exposed from the second transparent conductive film at a part of the portion, and crystallinity of the first transparent conductive film is higher than that of the second transparent conductive film.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 6, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Hiroyuki Yarita, Kikuo Ono
  • Liquid Crystal Display Device
    Publication number: 20080088759
    Abstract: There is provided a liquid crystal display device capable of minimizing a difference in hue between a black state and a white state to provide high-quality display. The liquid crystal display device includes: a first substrate and a second substrate; a liquid crystal layer disposed between the first and second substrates; a first electrode provided on the first substrate and a second electrode which applies an electric field to the liquid crystal layer by an electric potential difference produced between the first electrode and the second electrode; and color filters provided on the first substrate or the second substrate; wherein the liquid crystal layer has a property of changing from an optically isotropic state to an optically anisotropic state in response to application of a voltage; and the color filters are made of a dye material.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 17, 2008
    Inventors: Yuka Utsumi, Ikuo Hiyama, Daisuke Kajita, Kikuo Ono
  • ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY APPARATUS WITH HIGH TRANSMITTED COLOR FILTERS
    Publication number: 20080079873
    Abstract: A liquid crystal display apparatus has: a pair of substrates; a pair of alignment plates disposed on the pair of substrates; a liquid crystal layer confined between the pair of substrates; an electrode group formed at least one of the pair of substrates, the electrode group applying an electric field to the liquid crystal layer; color filters formed on one of the pair of substrates; and a light source unit disposed on a back of the other of the pair of substrates, wherein the color filters include at least blue, green and red color filters, and wavelengths providing halves of a maximum transmittance of the green color filter are between from 590 nm to 610 n on one side, and between from 470 nm to 500 nm on the other side.
    Type: Application
    Filed: August 10, 2007
    Publication date: April 3, 2008
    Inventors: YUKA UTSUMI, Kazumi Kanesaka, Hiroshi Obata, Kikuo Ono
  • DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME
    Publication number: 20080079674
    Abstract: A range of higher applied voltage (lower applied voltage) than maximum (minimum) applied voltage, which is conventional maximum (minimum) liquid crystal transmittance, is provided; and the liquid crystal response compensator, which sets reference voltage, is provided so that the range can be utilized to compensate liquid crystal response; and the ? adjuster and the inter-tone interpolator are provided in order to adjust drift of ? characteristics caused by extension of the applied voltage range.
    Type: Application
    Filed: July 3, 2007
    Publication date: April 3, 2008
    Inventors: Yoshihisa Ooishi, Takashi Shoji, Junichi Maruyama, Kikuo Ono
  • Liquid crystal display device
    Patent number: 7352425
    Abstract: In a liquid crystal display device including a pair of substrates which face each other with a liquid crystal layer disposed therebetween, a plurality of pixel regions which are formed on one substrate, a planar counter electrode which is formed on each pixel region, and a comb-shaped or slit-shaped pixel electrode which is formed on each pixel region, the comb-shaped or slit-shaped pixel electrode being formed over the counter electrode by way of an insulation layer, a notch or a slit is formed in the counter electrode such that a wiring layer made of an opaque material which transmits a potential to the pixel electrode from a thin film transistor defines a region where the wiring layer is not overlapped relative to the counter electrode.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: April 1, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Kikuo Ono, Ikuko Mori, Ryutaro Oke, Hiroyuki Yarita
  • Display device
    Publication number: 20080068395
    Abstract: The present invention reduces moving image blurring in a hold-response-type display device. 1 frame is divided into 3 fields. Assuming the gradation-brightness characteristic of a first field as 1g, the gradation-brightness characteristic of a second field as 2g, and the gradation-brightness characteristic of a third field as 3g, the third field is set at an initial stage or at a final stage of the frame. Due to such setting, the moving image blurring can be effectively reduced up to the relatively high brightness.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 20, 2008
    Inventors: Ikuko Mori, Kikuo Ono
  • DISPLAY DEVICE
    Publication number: 20080068526
    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: Application
    Filed: October 30, 2007
    Publication date: March 20, 2008
    Inventors: Kikuo Ono, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • DISPLAY DEVICE
    Publication number: 20080068299
    Abstract: The present invention provides a display method realizing reduction in a moving picture blurring by forming one frame by two fields of different luminance, in which increase in an unapplied voltage due to shortening of data voltage write time is suppressed. A gate voltage is applied in a light field for a period of time which is twice as long as scan line selection time, thereby decreasing an unapplied voltage. On the other hand, a gate voltage is applied normally in a dark field for the scan line selection time, so that the case where the unapplied voltage increases is eliminated. As a result, an image with high reproducibility can be obtained.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 20, 2008
    Inventors: IKUKO MORI, Kikuo Ono
  • DISPLAY DEVICE
    Publication number: 20080067513
    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: Application
    Filed: October 30, 2007
    Publication date: March 20, 2008
    Inventors: Kikuo ONO, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • Liquid crystal display device
    Publication number: 20080068516
    Abstract: The present invention prevents deterioration of image quality by lowering a heat value of a data driver connected to a liquid crystal display panel. In a liquid crystal display device, a pixel which connects a TFT thereof to one of two neighboring scanning signal lines and a pixel which has a TFT thereof connected to the other scanning signal line are alternately arranged in the extending direction of the scanning signal lines, two pixels which are arranged close to each other with one video signal line sandwiched therebetween have respective TFTs connected to the video signal line, and the connection relationship between the TFT of each pixel and the scanning signal line is inverted for every pair of two pixels arranged in the extending direction of the video signal lines.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 20, 2008
    Inventors: Ikuko Mori, Kikuo Ono