Patents by Inventor Masanobu Ikeda
Masanobu Ikeda 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: 20250096216Abstract: According to one embodiment, a display device includes pixels each including transistors, pixel electrodes, a contact electrode, and light emitting elements, and an insulating basement, a first organic insulating layer, a second organic insulating layer, a resin layer, a common electrode, and first wiring lines. The common electrode is electrically connected to cathodes of the light emitting elements, and electrically connected to the contact electrodes of the pixels. The first wiring lines, each provided between the first organic insulating layer and the second organic insulating layer or between the second organic insulating layer and the resin layer, are electrically connected to the contact electrodes of the pixels, and are formed of a metal.Type: ApplicationFiled: December 3, 2024Publication date: March 20, 2025Inventors: Yoshinori AOKI, Yasuhiro KANAYA, Masanobu IKEDA, Akihiro OGAWA
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Patent number: 12255192Abstract: A display device includes a display portion mounted with a first LED and a second LED are mounted, a pixel circuit portion provided with a first pixel-circuit thin film transistor electrically connected to the first LED and a second pixel-circuit thin film transistor electrically connected to the second LED, a drive circuit portion provided with a drive-circuit thin film transistor, and a shielding layer provided between the display portion and the drive circuit portion. A fixed potential is applied to the shielding layer. The second LED overlaps the drive circuit portion with the shielding layer therebetween.Type: GrantFiled: August 9, 2021Date of Patent: March 18, 2025Assignee: JAPAN DISPLAY INC.Inventors: Masanobu Ikeda, Yoshinori Aoki, Akihiro Ogawa
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Patent number: 12249676Abstract: A display device includes a substrate, a plurality of pixels, a light emitting element, and an inorganic insulating layer. The pixels are provided to the substrate. The light emitting element is provided to each of the pixels. The inorganic insulating layer has translucency and covers at least part of the light emitting element. The inorganic insulating layer includes a side part and an extending part. The side part is provided to the side surface of the light emitting element. The extending part is provided at a side on the lower end of the side part and extending toward the outer side of the light emitting element than the side part in planar view seen from the normal direction of the substrate.Type: GrantFiled: May 11, 2021Date of Patent: March 11, 2025Assignee: Japan Display Inc.Inventors: Osamu Itou, Masanobu Ikeda, Masataka Ikeda
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Publication number: 20250079257Abstract: A gallium nitride-based semiconductor device includes an amorphous glass substrate having a first surface and a second surface opposite to the first surface; a gallium nitride-based semiconductor layer on the first surface of the amorphous glass substrate, and a compensation layer on the second surface of the amorphous glass substrate. A thermal expansion coefficient of the compensation layer is more than a thermal expansion coefficient of the amorphous glass substrate and less than a thermal expansion coefficient of the gallium nitride-based semiconductor layer.Type: ApplicationFiled: November 18, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Masanobu IKEDA, Masumi NISHIMURA
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Publication number: 20250066901Abstract: A film formation method of a gallium nitride film according to an embodiment of the present invention includes the steps of placing a substrate so as to face a target containing nitride and gallium in a vacuum chamber, heating the substrate, supplying a sputtering gas to the vacuum chamber, supplying a nitrogen radical and a hydrogen radical to the vacuum chamber, and applying a voltage to the target to generate a plasma of the sputtering gas. Gallium nitride generated by a recombination reaction between the gallium sputtered from the target and the nitrogen radical, and gallium nitride generated by a recombination reaction between a gallium cation generated from the gallium of the target and a nitrogen anion generated from the nitrogen radical are deposited on the substrate.Type: ApplicationFiled: November 7, 2024Publication date: February 27, 2025Applicant: Japan Display Inc.Inventor: Masanobu IKEDA
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Patent number: 12218178Abstract: A display device includes a substrate; a plurality of pixels provided on the substrate; and a plurality of inorganic light emitting elements provided on each of the pixels. The inorganic light emitting elements each include a semiconductor substrate having a first face facing the substrate and a second face provided in a convex shape on a side opposite from the first face; and a plurality of semiconductor nanowires provided on the first face, the semiconductor nanowires extending in a direction perpendicular to the first face.Type: GrantFiled: September 22, 2021Date of Patent: February 4, 2025Assignee: Japan Display Inc.Inventors: Masanobu Ikeda, Hidemasa Yamaguchi
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Patent number: 12204216Abstract: According to one embodiment, a display device includes a display area, a peripheral area, a pixel electrode disposed, a switching element, a scanning line, a signal line, a metal layer which overlaps at least one of the signal line and the scanning line, an antireflection layer which covers the metal layer, a common electrode which covers the antireflection layer and a power supply line disposed in the peripheral area, to which a common voltage is supplied. The common electrode and the metal layer are connected to the power supply line in the peripheral area.Type: GrantFiled: October 12, 2023Date of Patent: January 21, 2025Assignee: Japan Display Inc.Inventors: Kyosuke Watanabe, Jin Hirosawa, Masanobu Ikeda
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Patent number: 12183853Abstract: An LED module includes a first electrode and a second electrode disposed on the substrate, an LED chip disposed on the first electrode and the second electrode, and a first bump between the LED chip and the first electrode, and a second bump between the LED chip and the second electrode. The LED chip includes a cathode electrode facing the first electrode, an anode electrode facing the second electrode, and a step portion between the cathode electrode and the anode electrode, a distance between the first electrode and the cathode electrode is larger than a distance between the second electrode and the anode electrode, and the first bump is disposed to embed the step portion.Type: GrantFiled: July 30, 2021Date of Patent: December 31, 2024Assignee: Japan Display Inc.Inventors: Masanobu Ikeda, Yoshinori Aoki, Akihiro Ogawa
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Publication number: 20240379928Abstract: A display device includes a substrate, a plurality of first pixels and a plurality of second pixels provided to the substrate, a plurality of inorganic light emitting elements provided to the respective first pixels and the respective second pixels, a plurality of signal lines configured to supply a signal to the first pixels and the second pixels, and a plurality of power supply lines configured to supply a power supply potential to the first pixels and the second pixels. At least one or more of the signal lines are provided in a layer different from a layer of the power supply lines in the first pixels, and the signal lines and the power supply lines are provided in the same layer in the second pixels.Type: ApplicationFiled: July 23, 2024Publication date: November 14, 2024Inventors: Masanobu IKEDA, Osamu ITOU, Yoshinori AOKI
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Patent number: 12142600Abstract: According to one embodiment, a display panel includes a substrate, a first insulating layer, a second insulating layer, and pixels including subpixels of colors. Each of the subpixels includes a drive transistor, a conductive layer, a pixel electrode receiving a signal having a controlled current value from the drive transistor via the conductive layer, and a light-emitting element. Each of the pixels has a mounting electrode overlaid on the conductive layer in each of the subpixels. In a first pixel of the pixels, the mounting electrode is in an electrically floating state.Type: GrantFiled: May 26, 2021Date of Patent: November 12, 2024Assignee: Japan Display Inc.Inventors: Yasuhiro Kanaya, Masanobu Ikeda
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Publication number: 20240334743Abstract: According to one embodiment, a display panel includes a substrate, a first insulating layer, and a plurality of pixels including sub-pixels of a plurality of colors, respectively. Each of the sub-pixels includes a drive transistor, a pixel electrode supplied with a signal having a current value controlled from the drive transistor, and a light emitting element mounted on the pixel electrode. Each of the pixels includes a mounting electrode located to be spaced apart from the pixel electrode. The mounting electrode is in an electrically floating state in a first pixel of the plurality of pixels.Type: ApplicationFiled: June 11, 2024Publication date: October 3, 2024Applicant: Japan Display Inc.Inventors: Yasuhiro KANAYA, Masanobu IKEDA
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Patent number: 12087883Abstract: According to one embodiment, a display device includes a substrate, an anode electrode, a light emitting element and a reflector plate. The anode electrode is arranged on the substrate. The light emitting element is mounted on the anode electrode. The reflector plate is arranged under the anode electrode, and is arranged to overlap a region where the light emitting element is mounted, in planar view. An anode terminal is arranged on a bottom part and electrically connected to the anode electrode. A cathode terminal is arranged across an entire upper surface on a side opposite to the anode terminal. The anode electrode being smaller than the cathode terminal in a position overlapping the region where the light emitting element is mounted in planar view.Type: GrantFiled: January 31, 2022Date of Patent: September 10, 2024Assignee: Japan Display Inc.Inventors: Hidemasa Yamaguchi, Masanobu Ikeda
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Patent number: 12087894Abstract: A display device includes a substrate, a plurality of first pixels and a plurality of second pixels provided to the substrate, a plurality of inorganic light emitting elements provided to the respective first pixels and the respective second pixels, a plurality of signal lines configured to supply a signal to the first pixels and the second pixels, and a plurality of power supply lines configured to supply a power supply potential to the first pixels and the second pixels. At least one or more of the signal lines are provided in a layer different from a layer of the power supply lines in the first pixels, and the signal lines and the power supply lines are provided in the same layer in the second pixels.Type: GrantFiled: September 23, 2021Date of Patent: September 10, 2024Assignee: Japan Display Inc.Inventors: Masanobu Ikeda, Osamu Itou, Yoshinori Aoki
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Publication number: 20240258295Abstract: A display device includes a substrate, a plurality of pixels arrayed on the substrate, an inorganic light-emitting element provided to each of the pixels, an anode electrode electrically coupled to the inorganic light-emitting element, a transistor provided on a first surface of the substrate, and coupling wiring that couples the anode electrode and the transistor. The anode electrode protrudes from an inside to an outside of the inorganic light-emitting element in planar view from a normal direction of the substrate.Type: ApplicationFiled: April 15, 2024Publication date: August 1, 2024Inventors: Masanobu IKEDA, Yasuhiro KANAYA
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Publication number: 20240243116Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixels arrayed on the substrate; a plurality of inorganic light-emitting elements that are provided in the pixels, respectively; a transistor provided to a first surface of the substrate and coupled to one of the inorganic light-emitting elements; wiring provided to the first surface of the substrate and coupled to the transistor; and a circular polarization plate provided on a first side of the substrate.Type: ApplicationFiled: February 21, 2024Publication date: July 18, 2024Inventors: Masanobu IKEDA, Yasuhiro KANAYA, Tadafumi OZAKI
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Patent number: 12041821Abstract: According to one embodiment, a display panel includes a substrate, a first insulating layer, and a plurality of pixels including sub-pixels of a plurality of colors, respectively. Each of the sub-pixels includes a drive transistor, a pixel electrode supplied with a signal having a current value controlled from the drive transistor, and a light emitting element mounted on the pixel electrode. Each of the pixels includes a mounting electrode located to be spaced apart from the pixel electrode. The mounting electrode is in an electrically floating state in a first pixel of the plurality of pixels.Type: GrantFiled: May 26, 2021Date of Patent: July 16, 2024Assignee: JAPAN DISPLAY INC.Inventors: Yasuhiro Kanaya, Masanobu Ikeda
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Patent number: 12025874Abstract: A display apparatus includes a first substrate, a second substrate facing the first substrate, lead wirings provided on the first substrate or the second substrate and a first insulator part provided on an upper surface of the second substrate. The lead wirings are arranged in a peripheral region when seen in a plan view and the first insulator part is arranged so as to overlap a display region when seen in a plan view. Second insulator parts or spaces with a permittivity lower than a permittivity of the first insulator part are provided at sides of the first insulator part. The second insulator parts or the spaces are arranged so as to overlap the lead wirings in the peripheral region when seen in a plan view.Type: GrantFiled: April 7, 2023Date of Patent: July 2, 2024Assignee: Japan Display Inc.Inventors: Koji Ishizaki, Masanobu Ikeda, Hayato Kurasawa, Yoshihiro Watanabe
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Patent number: 12015021Abstract: A display device includes a substrate, a plurality of pixels provided to the substrate, a light emitting element and a plurality of transistors provided to each of the pixels, signal lines configured to supply a signal to the pixels, a first semiconductor layer and a second semiconductor layer provided in different layers in a direction perpendicular to the substrate and overlap at least partially in planar view, first gate electrodes each of which is provided in a region overlapping a part of the first semiconductor layer, a first insulating film provided between the first gate electrodes and the first semiconductor layer, and a second insulating film provided between the first semiconductor layer and the second semiconductor layer.Type: GrantFiled: March 25, 2021Date of Patent: June 18, 2024Assignee: Japan Display Inc.Inventors: Masanobu Ikeda, Yasuhiro Kanaya, Yoshinori Aoki
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Publication number: 20240194659Abstract: A display device including a substrate, a plurality of pixels, a plurality of inorganic light-emitting elements, a flattening film, and an inorganic film. The pixels are arrayed on the substrate and display different colors. The inorganic light-emitting elements are provided to the respective pixels. The flattening film surrounds at least a side surface of the inorganic light-emitting element. The inorganic film covers the flattening film and the inorganic light-emitting element. The upper surface of the inorganic light-emitting element is exposed from the flattening film and is in contact with the inorganic film. Alternatively, the flattening film is provided covering the upper surface of the inorganic light-emitting element.Type: ApplicationFiled: February 21, 2024Publication date: June 13, 2024Inventors: Yasuhiro KANAYA, Masanobu IKEDA
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Publication number: 20240185769Abstract: A display apparatus with a detecting device includes a substrate, a plurality of pixels provided to the substrate, an inorganic light emitting element provided to each of the pixels, a plurality of detection electrodes arranged in a first direction parallel to the substrate, and a plurality of drive electrodes arranged in a second direction intersecting the first direction and provided intersecting the detection electrodes in planar view seen from a direction perpendicular to the substrate. The detection electrodes each includes a plurality of first linear parts, a plurality of second linear parts extending in a direction intersecting the first linear parts, and a bent part that couples the first linear part and the second linear part, the first linear parts and the second linear parts are metal thin wires, and the drive electrodes are translucent electric conductors.Type: ApplicationFiled: January 16, 2024Publication date: June 6, 2024Inventors: Masanobu IKEDA, Yasuhiro KANAYA