Patents by Inventor Hiroshi Tabatake

Hiroshi Tabatake 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: 10170040
    Abstract: A display device includes a switching element having a first input/output terminal electrically connected to a first signal line, a first wiring electrically connected to a second input/output terminal of the switching element, a transistor having a gate electrode connected to the first wiring, a second wiring electrically connected to a source or drain of the transistor, a pixel electrode connected to the second wiring, a first insulating layer which is arranged between the first wiring and the second wiring and is arranged between the first wiring and the pixel electrode, a second insulating layer between the first insulating layer and pixel electrode, and a conducting layer between the first insulating layer and the second insulating layer, the conducting layer including a region overlapping the pixel electrode. The conducting layer includes a dividing groove dividing the conducting layer into a plurality of regions at a region overlapping the pixel electrode.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 1, 2019
    Assignee: Japan Display Inc.
    Inventors: Yasuhiro Ogawa, Hiroshi Tabatake, Hiroyuki Kimura, Tetsuo Morita, Makoto Shibusawa
  • Patent number: 10121413
    Abstract: A flash phenomenon of OLEDs at the time of power source ON of a display device is suppressed. The OLED emits light when reference potentials VSS and VDD are applied from power source lines to the OLED's cathode and anode respectively. While the anode can be connected to one of the power source line via a driving TFT and a lighting switch, a reset potential VRS can be applied to the anode via a reset switch and the driving TFT. The lighting switch is turned OFF and the reset switch and the driving TFT are turned ON so that VRS is applied to the anode, before starting the application of the reference potentials to the power source lines. Following this state, the application of the reference potentials to the power source lines starts, and thus a normal operation of allowing the OLED to emit light starts.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: November 6, 2018
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Nakayama, Hiroshi Tabatake, Yutaka Umeda
  • Patent number: 10096283
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: October 9, 2018
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Patent number: 10050094
    Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: August 14, 2018
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
  • Patent number: 9755181
    Abstract: A display device including a first substrate provided with a plurality of display elements, a second substrate provided facing the display element, a bonding material bonding the first substrate and second substrate, a first wall part provided over the second substrate side of the first substrate and enclosing a display region facing a position of the display element, a second wall part provided over the first substrate side of the second substrate and enclosing a structure body facing a position of the display element and a display region, the first wall part comprises the same material as at least part of the material constituting the display element, the second wall part is provided from the same material as at least part of the material constituting the structure body, and the first wall part and second wall part are in contact using the bonding material in the display region side.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: September 5, 2017
    Assignee: Japan Display Inc.
    Inventors: Kazuhiro Odaka, Naoki Tokuda, Hiroshi Tabatake
  • Patent number: 9685458
    Abstract: A display device includes a display region comprising a plurality of pixels, each pixel of the plurality of pixels comprises a light emitting element which includes a pixel electrode, a conductive layer below the pixel electrode and configured to receive a specified electric voltage, and a thin film transistor below the pixel electrode and the conductive layer, wherein the thin film transistor comprises a semiconductor layer which includes a channel region, a gate electrode which is overlapping the channel region, a first electrode electrically connected to the semiconductor layer and the pixel electrode, and a second electrode electrically connectable to a power supply line, wherein the conductive layer includes an overlapped region which overlaps with the channel region, and the first electrode extends so as to cover the gate electrode at the overlapped region.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: June 20, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Tabatake, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Nakayama, Tetsuo Morita, Yutaka Umeda
  • Patent number: 9607548
    Abstract: According to one embodiment, a display device includes a plurality of pixels each including a plurality of subpixels, each subpixel including a luminescent element, a plurality of scanning lines, a plurality of image signal lines, a plurality of reset power source lines, a first power source line, a scanning line driving circuit and a signal line driving circuit, wherein at least one subpixel comprises an output switch, a driving transistor, a retaining capacitance, a pixel switch and a reset switch, and the output switch is shared with a plurality of subpixels included in at least one pixel.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Kimura, Tetsuo Morita, Hiroshi Tabatake
  • Patent number: 9542888
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 10, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Patent number: 9368058
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 14, 2016
    Assignee: Japan Display Inc.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Publication number: 20160064686
    Abstract: A display device including a first substrate provided with a plurality of display elements, a second substrate provided facing the display element, a bonding material bonding the first substrate and second substrate, a first wall part provided over the second substrate side of the first substrate and enclosing a display region facing a position of the display element, a second wall part provided over the first substrate side of the second substrate and enclosing a structure body facing a position of the display element and a display region, the first wall part comprises the same material as at least part of the material constituting the display element, the second wall part is provided from the same material as at least part of the material constituting the structure body, and the first wall part and second wall part are in contact using the bonding material in the display region side.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 3, 2016
    Inventors: Kazuhiro ODAKA, Naoki Tokuda, Hiroshi Tabatake
  • Publication number: 20140111404
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Applicant: Japan Display Inc.
    Inventors: Kazuyoshi OMATA, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Patent number: 8643796
    Abstract: In one embodiment, a liquid crystal display device having a plurality of pixels includes a first substrate having an insulating substrate, a first detection element extending in a first direction above the insulating substrate, a second detection element extending in a second direction crossing the first direction and an insulating film provided between the first and second detection circuits. A second substrate is arranged opposing to the first substrate so as to hold a liquid crystal layer therebetween. A detection circuit is provided on the first substrate to detect change of electrostatic capacitance between the first and second detection elements. At least one of the first and second detection elements is an element required for operating the liquid crystal layer.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 4, 2014
    Assignee: Japan Display Central Inc.
    Inventors: Hiroyuki Kimura, Hiroshi Tabatake, Tetsuya Kawamura
  • Publication number: 20110157504
    Abstract: In one embodiment, a liquid crystal display device having a plurality of pixels includes a first substrate having an insulating substrate, a first detection element extending in a first direction above the insulating substrate, a second detection element extending in a second direction crossing the first direction and an insulating film provided between the first and second detection circuits. A second substrate is arranged opposing to the first substrate so as to hold a liquid crystal layer therebetween. A detection circuit is provided on the first substrate to detect change of electrostatic capacitance between the first and second detection elements. At least one of the first and second detection elements is an element required for operating the liquid crystal layer.
    Type: Application
    Filed: November 23, 2010
    Publication date: June 30, 2011
    Applicant: Toshiba Mobile Display Co., Ltd.
    Inventors: Hiroyuki KIMURA, Hiroshi Tabatake, Tetsuya Kawamura
  • Patent number: 7564511
    Abstract: A circuit array substrate includes an optically transparent substrate, pixels having switching elements formed on the transparent substrate, gate electrode lines connected to the switching elements, the gate electrode lines being provided on a first insulation film with separating portions in the pixels, signal lines connected to the switching elements, the signal lines being provided on a second insulation film which is different from the first insulation film, and electrically conductive portions provided on the second film to electrically connect the electrode lines with the separating portions to each other. The separating portions reduce electrostatic capacitances defined between the gate electrode lines and the switching elements when the conductive portions are not connected between the separating portions.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: July 21, 2009
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroshi Tabatake, Tetsuya Kawamura, Shinichi Kawamura, Katsuhiko Inada, Atsushi Takeda, Nobuo Imai, Akihiro Takami
  • Patent number: 7471358
    Abstract: In order to make a boundary inconspicuous, which is located between an image area which displays an image by translucent pixels and a dummy area which always displays a white color by reflection pixels, a size ratio of transparent areas in color filters of the reflection pixels with respect to reflection areas therein is made larger than a size ratio of transparent areas in color filters of the translucent pixels with respect to reflection areas therein. In such a way, brightness of the display is balanced by adjusting quantities of transmission light through the transparent areas of the reflection pixels with respect to quantities of reflection light generated unexpectedly on transmission areas of the translucent pixels. Then, degrees of whiteness in the translucent pixels and the reflection pixels are approximated to each other.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: December 30, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Keiji Tago, Hiroshi Tabatake, Hiroyuki Kimura, Tetsuya Iizuka
  • Patent number: 7391053
    Abstract: In order to make it possible to easily detect an electrical defect by using an array tester, the present inspection substrate includes: plural scan lines and plural signal lines; plural storage capacitor lines arranged in parallel to the scan lines; storage capacitor elements, each of which uses a part of the storage capacitor line as one of electrodes thereof; storage capacitor upper electrodes formed of the same layer as that for the signal lines and electrically connected to the storage capacitor elements; switching elements arranged on intersection points of the signal lines and the scan lines and electrically connected to the storage capacitor elements; and dummy wiring lines formed by use of at least one of two types of metals constituting electrodes of the switching elements, and electrically connected to any of the scan lines, the signal lines, the storage capacitor lines and the storage capacitor upper electrodes.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: June 24, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Tetsuya Iizuka, Mitsuhiro Yamamoto, Hiroshi Tabatake
  • Publication number: 20070200990
    Abstract: In order to suppress noise in display, which would occur due to variations of inclination directions of liquid crystal molecules, and to improve display quality, a first structure in a shape having a discontinuous portion is provided to a first electrode, and a second structure is provided to a second electrode so as to face the discontinuous portion of the first structure. When a voltage is applied to the first and second electrodes to generate an electric field in a liquid crystal layer, the first structure controls the inclination directions of the liquid crystal molecules, and the second structure controls the inclination directions of the liquid crystal molecules existing in the discontinuous portion of the first structure. In the discontinuous portion of the first structure, the amount of light passing through the liquid crystal layer increases, and the liquid crystal molecules are aligned more vertically. Hence, light leakage is reduced.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 30, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Jin Hirosawa, Norihiro Yoshida, Arihiro Takeda, Reiko Suwa, Hiroyuki Kimura, Hiroshi Tabatake, Yuuki Morita
  • Publication number: 20070121039
    Abstract: In order to make a boundary inconspicuous, which is located between an image area which displays an image by translucent pixels and a dummy area which always displays a white color by reflection pixels, a size ratio of transparent areas in color filters of the reflection pixels with respect to reflection areas therein is made larger than a size ratio of transparent areas in color filters of the translucent pixels with respect to reflection areas therein. In such a way, brightness of the display is balanced by adjusting quantities of transmission light through the transparent areas of the reflection pixels with respect to quantities of reflection light generated unexpectedly on transmission areas of the translucent pixels. Then, degrees of whiteness in the translucent pixels and the reflection pixels are approximated to each other.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 31, 2007
    Applicant: Toshiba Matsushita Display Technology Co.,Ltd.
    Inventors: Keiji Tago, Hiroshi Tabatake, Hiroyuki Kimura, Tetsuya Iizuka
  • Publication number: 20050263810
    Abstract: In order to make it possible to easily detect an electrical defect by using an array tester, the present inspection substrate includes: plural scan lines and plural signal lines; plural storage capacitor lines arranged in parallel to the scan lines; storage capacitor elements, each of which uses a part of the storage capacitor line as one of electrodes thereof; storage capacitor upper electrodes formed of the same layer as that for the signal lines and electrically connected to the storage capacitor elements; switching elements arranged on intersection points of the signal lines and the scan lines and electrically connected to the storage capacitor elements; and dummy wiring lines formed by use of at least one of two types of metals constituting electrodes of the switching elements, and electrically connected to any of the scan lines, the signal lines, the storage capacitor lines and the storage capacitor upper electrodes.
    Type: Application
    Filed: May 5, 2005
    Publication date: December 1, 2005
    Applicant: Toshiba Matsushita Display Technology
    Inventors: Tetsuya Iizuka, Mitsuhiro Yamamoto, Hiroshi Tabatake
  • Publication number: 20050140570
    Abstract: Gate electrode lines 11 formed on glass substrate 3 are separated by separating portions 32 for respective pixels 5 to shorten lengths of gate electrode lines 11. Both end portions of gate electrode lines 11 separated by separating portions 32 are electrically connected by conductive films 42 made from the same materials as signal electrode lines 13. When glass substrate 3 is lifted up while glass substrate 3 is charged with static electricity, the increases in voltages at gate insulation film 31 provided between gate electrode lines 11 and polycrystalline semiconductor film 22 are effectively suppressed so that electrostatic destruction of gate electrode lines 11 can be prevented.
    Type: Application
    Filed: October 21, 2004
    Publication date: June 30, 2005
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroshi Tabatake, Tetsuya Kawamura, Shinichi Kawamura, Katsuhiko Inada, Atsushi Takeda, Nobuo Imai, Akihiro Takami