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: 20150029081
    Abstract: Provided is a liquid crystal display device, including: a plurality of scanning connection lines formed on at least one side of edges of the image display region, the plurality of scanning connection lines connecting together a scanning signal drive circuit and a plurality of scanning signal lines; a selection circuit formed so as to be interposed between the plurality of scanning connection lines and the plurality of scanning signal lines, the selection circuit being configured to selectively short-circuit one of a plurality of the scanning signal lines to one of the plurality of scanning connection lines based on a selection signal; and a selection signal line connected to the selection circuit, the selection signal line transmitting the selection signal to the selection circuit.
    Type: Application
    Filed: October 10, 2014
    Publication date: January 29, 2015
    Inventors: Genshiro KAWACHI, Kazuo KITA
  • Publication number: 20150022500
    Abstract: To achieve improved detection accuracy and time and position resolutions in an in-cell type capacitive touch sensor embedded in a liquid crystal panel of a liquid crystal display device, a drive electrode of the touch sensor is formed in a boundary region for separating pixel electrodes formed on a surface of a TFT substrate on a liquid crystal side, and a detection electrode is formed in a region of an opposing substrate that opposes the boundary region. A drive signal is supplied to the drive electrode to cause a voltage change, and based on the voltage change in the detection electrode caused thereby, a capacitance change in an opposing part between the drive electrode and the detection electrode is detected, to thereby detect contact of an object to a display surface near the opposing part in a liquid crystal panel.
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Inventors: Kazuo KITA, Genshiro KAWACHI
  • Publication number: 20140374730
    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: September 5, 2014
    Publication date: December 25, 2014
    Inventors: Toshihiro SATO, Genshiro KAWACHI, Yoshiro MIKAMI, Masaya ADACHI
  • Patent number: 8847858
    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 8, 2013
    Date of Patent: September 30, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Publication number: 20140151689
    Abstract: A display apparatus includes a gate electrode formed on a substrate as a portion of a gate line, a gate insulating film formed on the gate electrode, a semiconductor oxide layer formed on the gate insulating film, and a first insulating film formed to cover the semiconductor oxide layer. The display apparatus also includes a drain electrode connected to the semiconductor oxide layer through a first contact hole that is formed at the first insulating film, a second insulating film formed on the first insulating film, a third insulating film formed on the second insulating film, and a pixel electrode formed on the third insulating film. The pixel electrode is connected to the semiconductor oxide layer through a second contact hole that is formed on the semiconductor oxide layer.
    Type: Application
    Filed: November 28, 2013
    Publication date: June 5, 2014
    Applicant: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Genshiro KAWACHI
  • Publication number: 20130320339
    Abstract: A thin-film semiconductor device includes a gate electrode formed above a substrate; a gate insulating film formed to cover the gate electrode; a semiconductor layer formed above the gate insulating film and having a channel region; a channel protective layer formed above the semiconductor layer and containing an organic material which includes silicon, oxygen, and carbon; an interfacial layer which is formed in contact with the channel protective layer between the semiconductor layer and the channel protective layer, and which includes carbon as a major component, the carbon originating from the organic material; and a source electrode and a drain electrode which are electrically connected to the semiconductor layer.
    Type: Application
    Filed: February 27, 2012
    Publication date: December 5, 2013
    Applicants: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC CORPORATION
    Inventors: Takahiro Kawashima, Hisao Nagai, Eiichi Satoh, Yuji Kishida, Genshiro Kawachi
  • Patent number: 8598584
    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: Grant
    Filed: October 17, 2011
    Date of Patent: December 3, 2013
    Assignees: Panasonic Corporation, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hisao Nagai, Sadayoshi Hotta, Genshiro Kawachi
  • Publication number: 20130299837
    Abstract: In a thin-film semiconductor device, a semiconductor layer has a bandgap energy of 1.6 eV or less, an insulating layer formed above the semiconductor layer includes: a first insulating layer region placed outside of a first contact opening and above one end of a gate electrode; a second insulating layer region placed outside of a second contact opening and above the other end of the gate electrode which opposes the one end; and a third insulating layer region being rectangular and placed between the first contact opening and the second contact opening.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 14, 2013
    Inventors: Hiroshi HAYASHI, Takahiro KAWASHIMA, Genshiro KAWACHI
  • Publication number: 20130240863
    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: May 8, 2013
    Publication date: September 19, 2013
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Toshihiro SATO, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Patent number: 8487395
    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: Grant
    Filed: September 28, 2011
    Date of Patent: July 16, 2013
    Assignees: Panasonic Corporation, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Arinobu Kanegae, Genshiro Kawachi
  • Patent number: 8446347
    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, 2012
    Date of Patent: May 21, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Publication number: 20130105797
    Abstract: A method of manufacturing a thin-film semiconductor device according to the present disclosure includes: preparing a substrate; forming a gate electrode above the substrate; forming a first insulating film on the gate electrode; forming a semiconductor thin film that is to be a channel layer, on the first insulating film; forming a second insulating film on the semiconductor thin film; irradiating the second insulating film with a beam so as to increase a transmittance of the second insulating film; and forming a source electrode and a drain electrode above the channel layer.
    Type: Application
    Filed: April 5, 2012
    Publication date: May 2, 2013
    Applicants: C/O PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC CORPORATION
    Inventors: Hiroshi HAYASHI, Takahiro KAWASHIMA, Genshiro KAWACHI
  • Patent number: 8426264
    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: May 31, 2011
    Date of Patent: April 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Genshiro Kawachi
  • Patent number: 8426870
    Abstract: A thin-film transistor array device includes a passivation film above first and second bottom gate transistors. A source wire is below the passivation film. A gate wire and a relay electrode are above the passivation film. The gate wire is electrically connected to a gate 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 gate wire and the relay electrode and not electrically connected between the gate wire and the relay electrode. The conductive oxide film covers an end portion of the source 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: Grant
    Filed: September 26, 2011
    Date of Patent: April 23, 2013
    Assignees: Panasonic Corporation, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Arinobu Kanegae, Genshiro Kawachi
  • Patent number: 8415746
    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: May 31, 2011
    Date of Patent: April 9, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Genshiro Kawachi
  • Patent number: 8330166
    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: Grant
    Filed: May 25, 2011
    Date of Patent: December 11, 2012
    Assignees: Panasonic Corporation, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hiroshi Hayashi, Takahiro Kawashima, Genshiro Kawachi
  • Patent number: 8278665
    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: Grant
    Filed: August 20, 2010
    Date of Patent: October 2, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Haruhiko Asanuma, Genshiro Kawachi
  • Patent number: 8255842
    Abstract: A thin-film transistor circuit includes a crystallized semiconductor thin film two-dimensionally partitioned into crystal-grain-defining areas each of which accommodates a crystal grain larger than a predetermined size, thin-film transistors each of which has a channel region placed at the center position of a corresponding one of the crystal-grain-defining areas, and wirings which interconnect the thin-film transistors.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: August 28, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Genshiro Kawachi
  • Publication number: 20120127146
    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, 2012
    Publication date: May 24, 2012
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Publication number: 20120074421
    Abstract: A thin-film transistor array device includes a passivation film above first and second bottom gate transistors. A source wire is below the passivation film. A gate wire and a relay electrode are above the passivation film. The gate wire is electrically connected to a gate 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 gate wire and the relay electrode and not electrically connected between the gate wire and the relay electrode. The conductive oxide film covers an end portion of the source 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 26, 2011
    Publication date: March 29, 2012
    Applicants: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC CORPORATION
    Inventors: Arinobu KANEGAE, Genshiro KAWACHI