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).
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Patent number: 10096283Abstract: 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: GrantFiled: November 30, 2016Date of Patent: October 9, 2018Assignee: JAPAN DISPLAY INC.Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Patent number: 10050094Abstract: 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: GrantFiled: April 25, 2017Date of Patent: August 14, 2018Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Publication number: 20180090068Abstract: 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: ApplicationFiled: September 20, 2017Publication date: March 29, 2018Inventors: Yasuhiro OGAWA, Hiroshi TABATAKE, Hiroyuki KIMURA, Tetsuo MORITA, Makoto SHIBUSAWA
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Publication number: 20180069126Abstract: A semiconductor device includes an n-type oxide semiconductor layer, a gate electrode above the oxide semiconductor layer, a gate insulation layer between the oxide semiconductor layer and the gate electrode, a first terminal connected to the oxide semiconductor layer, and a second terminal connected to the gate electrode, a potential applied to the second terminal being higher than a potential applied to the first terminal.Type: ApplicationFiled: August 25, 2017Publication date: March 8, 2018Inventors: Toshinari SASAKI, Hiroshi TABATAKE
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Publication number: 20180061317Abstract: Disclosed is a display device including: a driving transistor, a first switching transistor, and a pixel transistor each having a gate and a pair of terminals; a storage capacitor having a pair of terminals; and a light-emitting element having an input terminal and an output terminal. One terminal of the driving transistor is electrically connected to one terminal of the pixel transistor. The other terminal of the driving transistor is electrically connected to one terminal of the first switching transistor and the input terminal of the light-emitting element. The other terminal of the first switching transistor is electrically connected to the gate of the driving transistor and one terminal of the capacitor. The one terminal of the capacitor overlaps with an active region of the driving transistor.Type: ApplicationFiled: August 7, 2017Publication date: March 1, 2018Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Publication number: 20180053470Abstract: A driving method of a display device is provided. In a first period, threshold voltages are simultaneously compensated for all first transistors which are provided in a plurality of pixels arranged in a matrix form with n rows and m columns. In a second period, turning switches are turned off, and image data is written to the first transistors in the plurality of pixels row-by-row. In a third period, all light-emitting elements are made to simultaneously emit light. n and m are each an integer larger than 1. Each of the first transistors is configured so that the image data is input to a control terminal, a first terminal is electrically connected to a power-source line, and a second terminal is electrically connected to the light-emitting element. The power-source line is supplied with a high-level potential in the first and third periods and a low-level potential in the second period.Type: ApplicationFiled: June 9, 2017Publication date: February 22, 2018Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Publication number: 20180019291Abstract: 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: ApplicationFiled: April 25, 2017Publication date: January 18, 2018Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Publication number: 20170287951Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode, a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.Type: ApplicationFiled: March 20, 2017Publication date: October 5, 2017Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Patent number: 9755181Abstract: 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: GrantFiled: August 25, 2015Date of Patent: September 5, 2017Assignee: Japan Display Inc.Inventors: Kazuhiro Odaka, Naoki Tokuda, Hiroshi Tabatake
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Patent number: 9685458Abstract: 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: GrantFiled: October 13, 2015Date of Patent: June 20, 2017Assignee: Japan Display Inc.Inventors: Hiroshi Tabatake, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Nakayama, Tetsuo Morita, Yutaka Umeda
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Patent number: 9607548Abstract: 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: GrantFiled: December 17, 2014Date of Patent: March 28, 2017Assignee: Japan Display Inc.Inventors: Hiroyuki Kimura, Tetsuo Morita, Hiroshi Tabatake
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Publication number: 20170084224Abstract: 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: ApplicationFiled: November 30, 2016Publication date: March 23, 2017Applicant: Japan Display Inc.Inventors: Kazuyoshi OMATA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE
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Patent number: 9542888Abstract: 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: GrantFiled: May 27, 2016Date of Patent: January 10, 2017Assignee: JAPAN DISPLAY INC.Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Publication number: 20160275855Abstract: 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: ApplicationFiled: May 27, 2016Publication date: September 22, 2016Applicant: JAPAN DISPLAY INC.Inventors: KAZUYOSHI OMATA, HIROYUKI KIMURA, MAKOTO SHIBUSAWA, HIROSHI TABATAKE
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Patent number: 9368058Abstract: 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: GrantFiled: October 17, 2013Date of Patent: June 14, 2016Assignee: Japan Display Inc.Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Publication number: 20160104761Abstract: 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: ApplicationFiled: October 13, 2015Publication date: April 14, 2016Inventors: Hiroshi TABATAKE, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi NAKAYAMA, Tetsuo MORITA, Yutaka UMEDA
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Publication number: 20160086543Abstract: 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: ApplicationFiled: September 18, 2015Publication date: March 24, 2016Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi NAKAYAMA, Hiroshi TABATAKE, Yutaka UMEDA
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Publication number: 20160064686Abstract: 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: ApplicationFiled: August 25, 2015Publication date: March 3, 2016Inventors: Kazuhiro ODAKA, Naoki Tokuda, Hiroshi Tabatake
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Publication number: 20150187272Abstract: 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: ApplicationFiled: December 17, 2014Publication date: July 2, 2015Applicant: Japan Display Inc.Inventors: Hiroyuki KIMURA, Tetsuo MORITA, Hiroshi TABATAKE
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Publication number: 20140111404Abstract: 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: ApplicationFiled: October 17, 2013Publication date: April 24, 2014Applicant: Japan Display Inc.Inventors: Kazuyoshi OMATA, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake