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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Publication number: 20200286978Abstract: A display includes a plurality of first wirings which are provided on a first layer and each of which is arranged parallel to a first direction in a first area, and which are arranged on a second layer in a second area; a second wiring which is provided in the first layer in the first area and which is provided on a layer in the second area; and a third wiring which is provided on the first layer and arranged between the first wirings in the first area and which is arranged to intersect with first wirings in the second area. The first wirings is arranged to be inclined to the same side in the first direction in the second area. The second wiring is arranged to intersect with a portion of the plurality of first wirings in a plan view, in the second area.Type: ApplicationFiled: May 21, 2020Publication date: September 10, 2020Applicant: Japan Display Inc.Inventors: Masumi NISHIMURA, Hiroshi TABATAKE, Akihito SATO
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Publication number: 20200251549Abstract: In the second area, the lower base surface of the wirings is in contact with the first inorganic insulating film including a stepped portion including upper surfaces having mutually different heights and being adjacent to each other in the second direction, and a stepped surface rising from the upper surfaces except the uppermost surface. The first inorganic insulating film constitutes at least the upper surfaces except the lowest surface, and the stepped surface. The adjacent wirings include a pair of convex portions protruding toward a direction facing each other. One and the other of the pair of convex portions are separated to face each other at a position where the stepped portion does not exist in the second area in the first inorganic insulating film.Type: ApplicationFiled: April 20, 2020Publication date: August 6, 2020Applicant: Japan Display Inc.Inventor: Hiroshi TABATAKE
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Publication number: 20200175915Abstract: 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: February 7, 2020Publication date: June 4, 2020Applicant: Japan display Inc.Inventors: Kazuyoshi OMATA, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Publication number: 20200127075Abstract: A lower base surface of wirings includes a stepped portion with upper surfaces having mutually different heights and stepped surfaces rising from respective upper surfaces. Each upper surface and the stepped surface form a projecting portion rising in each normal direction and constitute a first recessed corner portion immediately below the wirings and a second recessed corner portion at the tip of the projecting portion in the normal direction of the stepped surface. A first interval exists between the adjacent wirings. The first recessed corner portion has a first height. The second recessed corner portion has a second height and a second width in the first direction. The second width is smaller than the first interval, the second height is lower than the first height, or both the second width is smaller than the first interval and the second height is lower than the first height.Type: ApplicationFiled: December 19, 2019Publication date: April 23, 2020Applicant: Japan Display Inc.Inventors: Akihito Sato, Tetsuo Morita, Hiroshi Tabatake
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Patent number: 10573239Abstract: 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: August 31, 2018Date of Patent: February 25, 2020Assignee: JAPAN DISPLAY INC.Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Publication number: 20200035771Abstract: 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: October 4, 2019Publication date: January 30, 2020Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Patent number: 10546526Abstract: A display device includes a pixel region having a plurality of pixel and a driver circuit outside the pixel region. The pixels have a driving transistor and a switching transistor having a gate and a pair of terminals, a light-emitting element having an input terminal, and a storage capacitor having a pair of terminals. One terminal of the switching transistor is electrically connected to the gate of the driving transistor and one terminal of the storage capacitor. One terminal of the driving transistor is electrically connected to the other terminal of the storage capacitor and the input terminal. The driver circuit includes first and second transistors having a gate and a pair of terminal. The other terminal of the switching transistor is electrically connected to one terminal of the first transistor and one terminal of the second transistor. The second transistor has a channel region including an oxide semiconductor.Type: GrantFiled: June 27, 2017Date of Patent: January 28, 2020Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Patent number: 10475870Abstract: 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: July 11, 2018Date of Patent: November 12, 2019Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Publication number: 20190251903Abstract: 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: April 25, 2019Publication date: August 15, 2019Inventors: Tetsuo MORITA, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Patent number: 10319297Abstract: 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: GrantFiled: August 7, 2017Date of Patent: June 11, 2019Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Patent number: 10304386Abstract: 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: GrantFiled: November 1, 2018Date of Patent: May 28, 2019Assignee: Japan Display Inc.Inventors: Yasuhiro Ogawa, Hiroshi Tabatake, Hiroyuki Kimura, Tetsuo Morita, Makoto Shibusawa
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Publication number: 20190139995Abstract: 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: December 28, 2018Publication date: May 9, 2019Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Patent number: 10269977Abstract: 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: GrantFiled: August 25, 2017Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventors: Toshinari Sasaki, Hiroshi Tabatake
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Publication number: 20190073951Abstract: 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: November 1, 2018Publication date: March 7, 2019Inventors: Yasuhiro OGAWA, Hiroshi TABATAKE, Hiroyuki KIMURA, Tetsuo MORITA, Makoto SHIBUSAWA
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Patent number: 10204937Abstract: 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: GrantFiled: March 20, 2017Date of Patent: February 12, 2019Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
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Patent number: 10170040Abstract: 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: GrantFiled: September 20, 2017Date of Patent: January 1, 2019Assignee: Japan Display Inc.Inventors: Yasuhiro Ogawa, Hiroshi Tabatake, Hiroyuki Kimura, Tetsuo Morita, Makoto Shibusawa
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Publication number: 20180374414Abstract: 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: August 31, 2018Publication date: December 27, 2018Applicant: JAPAN DISPLAY INC.Inventors: Kazuyoshi OMATA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE
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Publication number: 20180374415Abstract: A display device includes a pixel region having a plurality of pixel and a driver circuit outside the pixel region. The pixels have a driving transistor and a switching transistor having a gate and a pair of terminals, a light-emitting element having an input terminal, and a storage capacitor having a pair of terminals. One terminal of the switching transistor is electrically connected to the gate of the driving transistor and one terminal of the storage capacitor. One terminal of the driving transistor is electrically connected to the other terminal of the storage capacitor and the input terminal. The driver circuit includes first and second transistors having a gate and a pair of terminal. The other terminal of the switching transistor is electrically connected to one terminal of the first transistor and one terminal of the second transistor. The second transistor has a channel region including an oxide semiconductor.Type: ApplicationFiled: June 27, 2017Publication date: December 27, 2018Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Publication number: 20180331167Abstract: 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: July 11, 2018Publication date: November 15, 2018Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
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Patent number: 10121413Abstract: 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: GrantFiled: September 18, 2015Date of Patent: November 6, 2018Assignee: Japan Display Inc.Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Nakayama, Hiroshi Tabatake, Yutaka Umeda