Patents by Inventor Naoki Tokuda
Naoki Tokuda 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: 20240130165Abstract: According to one embodiment, a display device includes a plurality of display elements and a partition which surrounds each of the plurality of display elements. The display elements each include a lower electrode, an upper electrode opposing the lower electrode and an organic layer disposed between the lower electrode and the upper electrode. The partition includes a conductive lower portion and an upper portion protruding from a side surface of the lower portion. Further, the partition includes an aperture through which the lower portion and the upper portion penetrate.Type: ApplicationFiled: October 10, 2023Publication date: April 18, 2024Applicant: Japan Display Inc.Inventors: Hidekazu MIYAKE, Naoki TOKUDA
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Publication number: 20240116274Abstract: An inorganic substrate/polymer film laminate with an attached protective film that allows for easy individual removal even when stored in a stacked state for a long period of time is provided. A first laminate is characterized by including an inorganic substrate, a polymer film layer and a first protective film, in that order, wherein the surface roughness Ra of the surface of the inorganic substrate opposite of the polymer film layer is 0.02-1.2 ?m.Type: ApplicationFiled: February 22, 2022Publication date: April 11, 2024Applicant: TOYOBO CO., LTD.Inventors: Kaya TOKUDA, Satoshi MAEDA, Tetsuo OKUYAMA, Naoki WATANABE
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Publication number: 20240040901Abstract: According to an embodiment, a display device includes a substrate, a lower electrode above the substrate in a display area, a rib including an aperture overlapping the lower electrode, a partition provided on the rib in the display area, a thin film including an upper electrode and an organic layer, a first sealing layer formed of an inorganic material and covering the thin film and the partition, and a line provided in a surrounding area between an end portion of the substrate and the display area. Each of the partition and the line includes a conductive lower portion and an upper portion protruding from a side surface of the lower portion.Type: ApplicationFiled: July 26, 2023Publication date: February 1, 2024Applicant: Japan Display Inc.Inventors: Jun HANARI, Naoki TOKUDA
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Patent number: 11810925Abstract: A display device includes a plurality of pixels, first to nth scanning lines, and a first semiconductor film. The plurality of pixels is arranged in first to nth rows and first to mth columns. The first to nth scanning lines are electrically connected to the pixels in the respective first to nth rows. The first semiconductor film overlaps with at least one of first to kth scanning lines. A display region has a cutoff intersecting the first to nth rows, and the first semiconductor film is located in the cutoff. Each of the plurality of pixels includes a light-emitting element (OLED) and a transistor electrically connected to the OLED and having a second semiconductor film. The first semiconductor film and the second semiconductor film exist in the same layer. n and m are each a natural number larger than 1, and k is a natural number smaller than n.Type: GrantFiled: September 24, 2021Date of Patent: November 7, 2023Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Patent number: 11765951Abstract: A display device according to an embodiment of the present invention includes: a base material including a display region and a curved region; a wiring line disposed on the base material and disposed from the display region over the curved region; and a heat dissipating layer formed corresponding to a position at which the wiring line is disposed in the curved region.Type: GrantFiled: October 7, 2021Date of Patent: September 19, 2023Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Publication number: 20230056257Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.Type: ApplicationFiled: October 7, 2022Publication date: February 23, 2023Inventors: Naoki Tokuda, Hiroshi Kageyama, Masamitsu Furuie
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Patent number: 11468836Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.Type: GrantFiled: September 4, 2020Date of Patent: October 11, 2022Assignee: Samsung Display Co., Ltd.Inventors: Naoki Tokuda, Hiroshi Kageyama, Masamitsu Furuie
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Publication number: 20220028959Abstract: A display device according to an embodiment of the present invention includes: a base material including a display region and a curved region; a wiring line disposed on the base material and disposed from the display region over the curved region; and a heat dissipating layer formed corresponding to a position at which the wiring line is disposed in the curved region.Type: ApplicationFiled: October 7, 2021Publication date: January 27, 2022Applicant: Japan Display Inc.Inventor: Naoki TOKUDA
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Publication number: 20220013546Abstract: A display device includes a plurality of pixels, first to nth scanning lines, and a first semiconductor film. The plurality of pixels is arranged in first to nth rows and first to mth columns. The first to nth scanning lines are electrically connected to the pixels in the respective first to nth rows. The first semiconductor film overlaps with at least one of first to kth scanning lines. A display region has a cutoff intersecting the first to nth rows, and the first semiconductor film is located in the cutoff. Each of the plurality of pixels includes a light-emitting element (OLED) and a transistor electrically connected to the OLED and having a second semiconductor film. The first semiconductor film and the second semiconductor film exist in the same layer. n and m are each a natural number larger than 1, and k is a natural number smaller than n.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventor: Naoki TOKUDA
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Patent number: 11222940Abstract: A display device according to an embodiment of the present invention includes: a base material including a display region and a curved region; a wiring line disposed on the base material and disposed from the display region over the curved region; and a heat dissipating layer formed corresponding to a position at which the wiring line is disposed in the curved region.Type: GrantFiled: September 19, 2019Date of Patent: January 11, 2022Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Patent number: 11133372Abstract: A display device includes a plurality of pixels, first to nth scanning lines, and a first semiconductor film. The plurality of pixels is arranged in first to nth rows and first to mth columns. The first to nth scanning lines are electrically connected to the pixels in the respective first to nth rows. The first semiconductor film overlaps with at least one of first to kth scanning lines. A display region has a cutoff intersecting the first to nth rows, and the first semiconductor film is located in the cutoff. Each of the plurality of pixels includes a light-emitting element (OLED) and a transistor electrically connected to the OLED and having a second semiconductor film. The first semiconductor film and the second semiconductor film exist in the same layer. n and m are each a natural number larger than 1, and k is a natural number smaller than n.Type: GrantFiled: April 6, 2020Date of Patent: September 28, 2021Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Publication number: 20200402461Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.Type: ApplicationFiled: September 4, 2020Publication date: December 24, 2020Inventors: Naoki Tokuda, Hiroshi Kageyama, Masamitsu Furuie
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Patent number: 10825883Abstract: An organic EL display device according to an embodiment of the present invention includes: an ITO layer divided and disposed in a region where a pixel opening is formed; a capacitance insulating film disposed on the ITO layer; a lower electrode disposed on the capacitance insulating film; an organic layer disposed on the lower electrode; an upper electrode disposed on the organic layer; and a planarizing member disposed so as to soften a step of a step part of the lower electrode.Type: GrantFiled: July 3, 2017Date of Patent: November 3, 2020Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Patent number: 10809553Abstract: Provided is a display device having a flexible substrate including an active region and a wiring region. The active region possesses a plurality of pixels each including a display element. The wiring region has a plurality of terminals, and a plurality of wirings extends from the active region to the plurality of terminals. An insulating film included in the active region and extending from the active region has a sidewall between an edge of the flexible substrate and the wiring adjacent to the edge in the wiring region. The sidewall has a curved portion on a plane in which the plurality of wirings is arranged, and a distance between the edge and the curved portion is curvedly varied.Type: GrantFiled: February 4, 2020Date of Patent: October 20, 2020Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Patent number: 10769997Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.Type: GrantFiled: September 6, 2019Date of Patent: September 8, 2020Assignee: Samsung Display Co., Ltd.Inventors: Naoki Tokuda, Hiroshi Kageyama, Masamitsu Furuie
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Publication number: 20200235193Abstract: A display device includes a plurality of pixels, first to nth scanning lines, and a first semiconductor film. The plurality of pixels is arranged in first to nth rows and first to mth columns. The first to nth scanning lines are electrically connected to the pixels in the respective first to nth rows. The first semiconductor film overlaps with at least one of first to kth scanning lines. A display region has a cutoff intersecting the first to nth rows, and the first semiconductor film is located in the cutoff. Each of the plurality of pixels includes a light-emitting element (OLED) and a transistor electrically connected to the OLED and having a second semiconductor film. The first semiconductor film and the second semiconductor film exist in the same layer. n and m are each a natural number larger than 1, and k is a natural number smaller than n.Type: ApplicationFiled: April 6, 2020Publication date: July 23, 2020Inventor: Naoki TOKUDA
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Publication number: 20200174305Abstract: Provided is a display device having a flexible substrate including an active region and a wiring region. The active region possesses a plurality of pixels each including a display element. The wiring region has a plurality of terminals, and a plurality of wirings extends from the active region to the plurality of terminals. An insulating film included in the active region and extending from the active region has a sidewall between an edge of the flexible substrate and the wiring adjacent to the edge in the wiring region. The sidewall has a curved portion on a plane in which the plurality of wirings is arranged, and a distance between the edge and the curved portion is curvedly varied.Type: ApplicationFiled: February 4, 2020Publication date: June 4, 2020Inventor: Naoki TOKUDA
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Patent number: 10591763Abstract: Provided is a display device having a flexible substrate including an active region and a wiring region. The active region possesses a plurality of pixels each including a display element. The wiring region has a plurality of terminals, and a plurality of wirings extends from the active region to the plurality of terminals. An insulating film included in the active region and extending from the active region has a sidewall between an edge of the flexible substrate and the wiring adjacent to the edge in the wiring region. The sidewall has a curved portion on a plane in which the plurality of wirings is arranged, and a distance between the edge and the curved portion is curvedly varied.Type: GrantFiled: February 26, 2019Date of Patent: March 17, 2020Assignee: Japan Display Inc.Inventor: Naoki Tokuda
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Publication number: 20200013850Abstract: A display device according to an embodiment of the present invention includes: a base material including a display region and a curved region; a wiring line disposed on the base material and disposed from the display region over the curved region; and a heat dissipating layer formed corresponding to a position at which the wiring line is disposed in the curved region.Type: ApplicationFiled: September 19, 2019Publication date: January 9, 2020Applicant: Japan Display Inc.Inventor: Naoki TOKUDA
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Publication number: 20190392759Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.Type: ApplicationFiled: September 6, 2019Publication date: December 26, 2019Inventors: Naoki Tokuda, Hiroshi Kageyama, Masamitsu Furuie