Patents by Inventor Genshiro Kawachi

Genshiro Kawachi 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: 20120074422
    Abstract: A thin-film transistor array device includes a passivation film above first and second bottom gate transistors. A gate wire is below the passivation film. A source wire and a relay wire are above the passivation film. The source wire is electrically connected to a source electrode of the first transistor via a first hole in the passivation film. A conductive oxide film is between the passivation film and both the source wire and the relay electrode and not electrically connected between the source wire and the relay electrode. The conductive oxide film covers an end portion of the gate wire that is exposed via a second hole in the passivation film. The conductive oxide film is between the relay electrode and a current-supply electrode of the second transistor and electrically connects the relay electrode and the current-supply electrode via a third hole in the passivation film.
    Type: Application
    Filed: September 28, 2011
    Publication date: March 29, 2012
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Panasonic Corporation
    Inventors: Arinobu KANEGAE, Genshiro KAWACHI
  • Patent number: 8134524
    Abstract: In an organic electroluminescent light emitting display device comprising a plurality of pixels each of which includes an organic electroluminescent element emitting light by a current supplied thereto, a plurality of active elements including a first active element which acquires a data signal and a second active element which regulates the current supplied to the organic electroluminescent element in accordance with the data signal, and a capacitive element storing the data signal, the present invention utilizes a part of the capacitive element arranged in one of the pixels for a light shielding member which shields the plurality of active elements arranged the one of the pixels from light emitted by the organic electroluminescent element arranged therein or another pixel adjacent thereto so as to suppress image quality deterioration and smear appearing in an image display area of the organic electroluminescent light emitting display device.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 13, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Publication number: 20120032180
    Abstract: In the thin-film transistor device: the stacked thickness of either a source electrode or a drain electrode and a corresponding one of silicon layers is the same value or a value close to the same value as the stacked thickness of a first channel layer and a second channel layer; the stacked thickness of the first channel layer and the second channel layer is the same in a region between the source electrode and the drain electrode and above the source electrode and the drain electrode; the first channel layer and the second channel layer are sunken in the region between the source electrode and the drain electrode, following a shape between the source electrode and the drain electrode; and the gate electrode has one region overlapping with the source electrode and an other region overlapping with the drain electrode.
    Type: Application
    Filed: October 17, 2011
    Publication date: February 9, 2012
    Applicants: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC CORPORATION
    Inventors: Hisao NAGAI, Sadayoshi HOTTA, Genshiro KAWACHI
  • Publication number: 20110278583
    Abstract: A thin-film semiconductor device includes, in order, a substrate, a gate electrode, a gate insulating film, a first channel layer, and a second channel layer. The second channel layer includes a protrusion between first top surface end portions. The protrusion has first lateral surfaces that each extend between one of the first top surface end portions and a top surface of the protrusion. An insulation layer is on the top surface of the protrusion. The insulation layer has second lateral surfaces that each extend to one of second top surface end portions of the insulation layer. Two contact layers are each on one of the second top surface end portions of the insulation layer, adjacent one of the second lateral surfaces of the insulation layer, adjacent one of the first lateral surfaces of the protrusion, and on one of the first top surface end portions of the second channel layer. A source electrode is on one of the two contact layers, and a drain electrode is on the other of the two contact layers.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 17, 2011
    Applicants: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC CORPORATION
    Inventors: Hiroshi HAYASHI, Takahiro KAWASHIMA, Genshiro KAWACHI
  • Patent number: 8044403
    Abstract: An integrated circuit, which is configured such that a MOS transistor and a bipolar transistor are integrated at the same time, is formed on an insulating substrate which includes a display device. An electronic device or a display includes a plurality of semiconductor devices which are formed by using a semiconductor thin film and are formed in the semiconductor thin film that is provided on an insulating substrate and is crystallized in a predetermined direction. The plurality of semiconductor devices include a MOS transistor and at least either one of a lateral bipolar thin-film transistor and a MOS-bipolar hybrid thin film transistor.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 25, 2011
    Assignee: Advanced LCD Technologies Development Center Co., Ltd.
    Inventor: Genshiro Kawachi
  • Patent number: 8035106
    Abstract: An integrated circuit, which is configured such that a MOS transistor and a bipolar transistor are integrated at the same time, is formed on an insulating substrate which includes a display device. An electronic device or a display includes a plurality of semiconductor devices which are formed by using a semiconductor thin film and are formed in the semiconductor thin film that is provided on an insulating substrate and is crystallized in a predetermined direction. The plurality of semiconductor devices include a MOS transistor and at least either one of a lateral bipolar thin-film transistor and a MOS-bipolar hybrid thin film transistor.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 11, 2011
    Assignee: Advanced LCD Technologies Development Center Co., Ltd.
    Inventor: Genshiro Kawachi
  • Publication number: 20110230016
    Abstract: In a lateral bipolar transistor including an emitter, a base and a collector which are formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction. In addition, in a MOS-bipolar hybrid transistor formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction.
    Type: Application
    Filed: May 31, 2011
    Publication date: September 22, 2011
    Inventor: Genshiro KAWACHI
  • Publication number: 20110227076
    Abstract: In a lateral bipolar transistor including an emitter, a base and a collector which are formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction. In addition, in a MOS-bipolar hybrid transistor formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction.
    Type: Application
    Filed: May 31, 2011
    Publication date: September 22, 2011
    Inventor: Genshiro KAWACHI
  • Patent number: 7977752
    Abstract: In a lateral bipolar transistor including an emitter, a base and a collector which are formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction. In addition, in a MOS-bipolar hybrid transistor formed in a semiconductor thin film formed on an insulating substrate, the semiconductor thin film is a semiconductor thin film which is crystallized in a predetermined direction.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: July 12, 2011
    Assignee: Advanced LCD Technologies Development Center Co., Ltd.
    Inventor: Genshiro Kawachi
  • Patent number: 7960916
    Abstract: A method of receiving video data, a control signal, etc. via a non-contact transmission path is adopted, and a receiving circuit for receiving and amplifying a signal is formed on the same insulating substrate as a display device. Thus, there are provided a thin-film transistor which is formed in a semiconductor thin film that is formed on the insulating substrate and crystallized in a predetermined direction, and an inductor for forming an inductive-coupling circuit, which is formed by using an electrically conductive thin film provided on the insulating substrate. The direction of movement of carriers flowing in the thin-film transistor is parallel to the direction of crystallization of the semiconductor thin film, and the inductor and the thin-film transistor are integrated so as to be electrically coupled directly or indirectly.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: June 14, 2011
    Assignee: Advanced LCD Technologies Development Center Co., Ltd.
    Inventor: Genshiro Kawachi
  • Publication number: 20110073863
    Abstract: An organic light emitting diode display includes a thin film transistor on a substrate (1). The thin film transistor includes a gate electrode (2), a gate insulating film (3) that covers the gate electrode (2), a first semiconductor film (4) provided on the gate insulating film (3), a second semiconductor film (5) provided on the first semiconductor film (4), a back channel protection insulating film (7) and an ohmic contact film (8) provided on the second semiconductor film (5), and source/drain electrodes (9). A crystallinity of the first semiconductor film (4) is higher than that of the second semiconductor film (5). The back channel protection insulating film (7) is formed as one of an organic insulating film and an organic/inorganic hybrid insulating film. The thin film transistor has excellent off-state characteristics, swing characteristics, and saturation characteristics.
    Type: Application
    Filed: August 20, 2010
    Publication date: March 31, 2011
    Inventors: Haruhiko Asanuma, Genshiro Kawachi
  • Publication number: 20100289027
    Abstract: An integrated circuit, which is configured such that a MOS transistor and a bipolar transistor are integrated at the same time, is formed on an insulating substrate which includes a display device. An electronic device or a display includes a plurality of semiconductor devices which are formed by using a semiconductor thin film and are formed in the semiconductor thin film that is provided on an insulating substrate and is crystallized in a predetermined direction. The plurality of semiconductor devices include a MOS transistor and at least either one of a lateral bipolar thin-film transistor and a MOS-bipolar hybrid thin film transistor.
    Type: Application
    Filed: July 29, 2010
    Publication date: November 18, 2010
    Inventor: Genshiro Kawachi
  • Publication number: 20100289028
    Abstract: An integrated circuit, which is configured such that a MOS transistor and a bipolar transistor are integrated at the same time, is formed on an insulating substrate which includes a display device. An electronic device or a display includes a plurality of semiconductor devices which are formed by using a semiconductor thin film and are formed in the semiconductor thin film that is provided on an insulating substrate and is crystallized in a predetermined direction. The plurality of semiconductor devices include a MOS transistor and at least either one of a lateral bipolar thin-film transistor and a MOS-bipolar hybrid thin film transistor.
    Type: Application
    Filed: July 29, 2010
    Publication date: November 18, 2010
    Inventor: Genshiro KAWACHI
  • Patent number: 7791077
    Abstract: An integrated circuit, which is configured such that a MOS transistor and a bipolar transistor are integrated at the same time, is formed on an insulating substrate which includes a display device. An electronic device or a display includes a plurality of semiconductor devices which are formed by using a semiconductor thin film and are formed in the semiconductor thin film that is provided on an insulating substrate and is crystallized in a predetermined direction. The plurality of semiconductor devices include a MOS transistor and at least either one of a lateral bipolar thin-film transistor and a MOS-bipolar hybrid thin film transistor.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: September 7, 2010
    Assignee: Advanced LCD Technologies Development Center Co., Ltd.
    Inventor: Genshiro Kawachi
  • Publication number: 20100134454
    Abstract: In an organic electroluminescent light emitting display device comprising a plurality of pixels each of which includes an organic electroluminescent element emitting light by a current supplied thereto, a plurality of active elements including a first active element which acquires a data signal and a second active element which regulates the current supplied to the organic electroluminescent element in accordance with the data signal, and a capacitive element storing the data signal, the present invention utilizes a part of the capacitive element arranged in one of the pixels for a light shielding member which shields the plurality of active elements arranged the one of the pixels from light emitted by the organic electroluminescent element arranged therein or another pixel adjacent thereto so as to suppress image quality deterioration and smear appearing in an image display area of the organic electroluminescent light emitting display device.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 3, 2010
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Patent number: 7675232
    Abstract: A self-luminescence display device, in which dispersion in display among a plurality of pixels, caused by dispersion in characteristics among drive thin-film transistors, is decreased and uniform display free of unevenness can be obtained. The device includes a plurality of pixels having current drive type luminescent elements, and parallel-connected n (n?2) thin-film transistors to feed a drive current to the respective current drive type luminescent elements. The transistors are arranged in different pixels, respectively, for example, in a first region of pixels adjacent to one another along a first direction. A second region of dummy pixels can be provided on at least one side of said first region along said first direction.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: March 9, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Genshiro Kawachi, Toshihiro Sato, Shigeyuki Nishitani, Naoki Tokuda
  • Patent number: 7667674
    Abstract: In an organic electroluminescent light emitting display device comprising a plurality of pixels each of which includes an organic electroluminescent element emitting light by a current supplied thereto, a plurality of active elements including a first active element which acquires a data signal and a second active element which regulates the current supplied to the organic electroluminescent element in accordance with the data signal, and a capacitive element storing the data signal, the present invention utilizes a part of the capacitive element arranged in one of the pixels for a light shielding member which shields the plurality of active elements arranged the one of the pixels from light emitted by the organic electroluminescent element arranged therein or another pixel adjacent thereto so as to suppress image quality deterioration and smear appearing in an image display area of the organic electroluminescent light emitting display device.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: February 23, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Patent number: 7567327
    Abstract: A liquid crystal display device of low power consumption which exhibits high image quality is realized. To each liquid-crystal-side pixel region of one substrate out of respective substrates which are arranged while sandwiching liquid crystal therebetween, a first switching element and a second switching element which are operated in response to a scanning signal from a gate signal line, a pixel electrode to which a video signal is supplied from the drain signal line through the first switching element, and a counter electrode to which a reference voltage signal is supplied from a reference voltage signal line through the second switching element, and the pixel electrode and the counter electrode are respectively formed of strip-like transparent conductive layers and are substantially alternately arranged in the inside of the pixel region.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: July 28, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Genshiro Kawachi, Hideo Sato, Toshio Miyazawa, Yoshiro Mikami, Katsumi Kondo
  • Publication number: 20090115754
    Abstract: There are provided a display apparatus and a display method, with which compressed image data that is to be decompressed can be transmitted to the display apparatus in an environment in which a transmission capacity is not always secured, and good image display is realized. An example of the display apparatus is an active matrix display apparatus formed by using thin-film transistors formed on an insulating substrate. In the active matrix display apparatus, a circuit that receives an image data signal from an external system via a non-contact transmission path and amplifies the image data signal, a circuit that processes the image data signal, and a memory circuit that stores the processed image data are integrated on the insulating substrate.
    Type: Application
    Filed: December 30, 2008
    Publication date: May 7, 2009
    Inventors: Genshiro Kawachi, Hiroyuki Abe, Kunihiro Asada, Makoto Ikeda
  • Publication number: 20090057764
    Abstract: A thin film transistor includes a crystal growth region in which a crystal is two-dimensionally grown on a plane, a source region and a drain region formed in the crystal growth region, and a gate electrode which is formed on a channel region between the source region and the drain region through a gate insulator film. The thin film transistor is characterized in that a side end portion on the channel region of the source region or drain region is aligned with a position located within a range of 1 ?m to 3.5 ?m away from a crystal growth start position.
    Type: Application
    Filed: October 16, 2008
    Publication date: March 5, 2009
    Inventors: Takashi OKADA, Genshiro Kawachi