Patents by Inventor Osamu Itou

Osamu Itou 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).

  • Publication number: 20220229219
    Abstract: A lighting device includes a first light guide area sandwiched between partitions extending along a first direction, a first light emitting element emitting light in a first wavelength band, and a semi-transmitting reflective film covering the first light guide area, the first light guide area including a first protrusion, and a reflective film covering the first protrusion and each side of the partitions, the first light guide area including, a first part having a constant first width in a second direction crossing the first direction, and a second part adjacent to the first part and the first width decreasing as it recedes from the first part, wherein the first light emitting-element is arranged in the second part.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 21, 2022
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20220223647
    Abstract: A light emitting element array is provided and includes substrate; light emitting elements arrayed to substrate; first anisotropic diffusion layer facing substrate with light emitting elements interposed between first anisotropic diffusion layer and substrate; and second anisotropic diffusion layer, wherein first anisotropic diffusion layer and second anisotropic diffusion layer are layered, first anisotropic diffusion layer and second anisotropic diffusion layer each include a region in an in-plane direction including a high refractive index region and a low refractive index region in a mixed manner, and absolute value of first angle formed by boundary between high refractive index region and low refractive index region of first anisotropic diffusion layer and direction perpendicular to substrate is different from absolute value of second angle formed by boundary between high refractive index region and low refractive index region of second anisotropic diffusion layer and direction perpendicular to substrate
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Inventor: Osamu ITOU
  • Publication number: 20220157228
    Abstract: To make a display device inconspicuous. A display system includes a base and a display device attached to the base. The display device includes a plurality of inorganic light emitters arrayed in a matrix with a row-column configuration and a surface layer. The surface layer is provided in a traveling direction of light emitted from the inorganic light emitters with respect to the inorganic light emitters and includes a plurality of transmission parts and a blocking part. The transmission parts are provided in a matrix with a row-column configuration so as to overlap the inorganic light emitters when viewed from the traveling direction of the light and allow the light from the inorganic light emitters to pass therethrough. The blocking part blocks the light from the inorganic light emitters. The inorganic light emitters are provided overlapping the transmission parts provided to the surface layer.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20220158049
    Abstract: A display device includes a light emitting element and an optical adjustment layer over the light emitting element. The optical adjustment layer includes a reflective film, a light transmitting wall over the reflection film, and a light transmitting film in contact with a side surface of the reflective film and a side surface of the light transmitting wall. A refractive index of the light transmitting wall is larger than a refractive index of the light transmitting film.
    Type: Application
    Filed: January 28, 2022
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20220146895
    Abstract: According to one embodiment, a display device includes a switching element disposed in a display area including a pixel, a color filter layer including a first color filter of a first color and a second color filter of a second color different from the first color and a conductive layer connected to the switching element via a contact hole penetrating the color filter layer. The conductive layer is in contact with the first color filter and the second color filter in the contact hole.
    Type: Application
    Filed: January 25, 2022
    Publication date: May 12, 2022
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20220146896
    Abstract: According to one embodiment, a display device includes a first substrate and a second substrate. The first substrate includes a plurality of pixels and a plurality of color filters. The plurality of pixels include a first pixel and a second pixel that display an identical color. The second pixel is disposed in a diagonal direction relative to the first pixel. Each of a first color filter corresponding to the first pixel and a second color filter corresponding to the second pixel includes a first filter part formed at a position overlapping an opening of a pixel corresponding to the color filter in plan view, and a second filter part formed at a position overlapping a non-opening area of the pixel in plan view.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Patent number: 11316070
    Abstract: According to an aspect, an illumination device configured to be arranged opposing an image display surface of a reflective display device, includes: a translucent substrate; a plurality of light emitting elements that is provided to the translucent substrate; an anode electrode that is electrically coupled to the light emitting elements; and a cathode electrode that is electrically coupled to the light emitting elements. The anode electrode includes: a plurality of first partial anode electrodes having recessed structures in which the light emitting elements are arranged; and a second partial anode electrode that has a width less than widths of the first partial anode electrodes and couples the first partial anode electrodes.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: April 26, 2022
    Assignee: Japan Display Inc.
    Inventors: Osamu Itou, Masanobu Ikeda
  • Patent number: 11315979
    Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels; a first anisotropic diffusion layer and a second anisotropic diffusion layer that are layered; and a plurality of light emitting elements interposed between the first anisotropic diffusion layer and the substrate. The first anisotropic diffusion layer and the second anisotropic diffusion layer each include a high refractive index region and a low refractive index region in a mixed manner. An absolute value of a first angle formed by a boundary between the high refractive index region and the low refractive index region of the first anisotropic diffusion layer and a direction perpendicular to the substrate is different from an absolute value of a second angle formed by a boundary between the high refractive index region and the low refractive index region of the second anisotropic diffusion layer and the direction perpendicular to the substrate.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: April 26, 2022
    Assignee: Japan Display Inc.
    Inventor: Osamu Itou
  • Publication number: 20220013701
    Abstract: 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: Application
    Filed: September 23, 2021
    Publication date: January 13, 2022
    Inventors: Masanobu IKEDA, Osamu ITOU, Yoshinori AOKI
  • Publication number: 20210391293
    Abstract: A display device includes a substrate; a plurality of pixels on the substrate; a light emitting element in each of the plurality of pixels; a first electrode electrically coupled with the light emitting element; a transistor on the substrate and electrically coupled with the first electrode; and a coupling layer between the first electrode and the light emitting element in a direction perpendicular to the substrate and containing a plurality of first conductive nanoparticles.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Applicant: Japan Display Inc.
    Inventors: Masanobu IKEDA, Osamu ITOU, Yasuhiro KANAYA
  • Publication number: 20210265532
    Abstract: According to an aspect, an illumination device configured to be arranged opposing an image display surface of a reflective display device, includes: a translucent substrate; a plurality of light emitting elements that is provided to the translucent substrate; an anode electrode that is electrically coupled to the light emitting elements; and a cathode electrode that is electrically coupled to the light emitting elements. The anode electrode includes: a plurality of first partial anode electrodes having recessed structures in which the light emitting elements are arranged; and a second partial anode electrode that has a width less than widths of the first partial anode electrodes and couples the first partial anode electrodes.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Osamu ITOU, Masanobu IKEDA
  • Publication number: 20210265540
    Abstract: A display device comprising: a first substrate; a plurality of pixels provided to the first substrate; a light emitting element provided to each of the pixels; a phosphor layer covering at least an upper surface of the light emitting element; a first reflective layer facing a side surface of the light emitting element; and a second reflective layer provided to a side surface of the phosphor layer, separated from the first reflective layer in a normal direction of the first substrate, and disposed farther away from the first substrate than the first reflective layer.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Osamu ITOU, Masanobu IKEDA
  • Publication number: 20210265533
    Abstract: 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: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Osamu ITOU, Masanobu IKEDA, Masataka IKEDA
  • Publication number: 20210265420
    Abstract: A display device comprising: a first substrate; a plurality of pixels provided to the first substrate; a light emitting element comprising a light emitting element substrate provided over the pixels and a plurality of light emitting parts provided to the light emitting element substrate corresponding to the respective pixels; an anode electrode provided to the first substrate and electrically coupled to the light emitting element; and a plurality of phosphor layers provided to the respective light emitting parts and each covering at least part of the corresponding light emitting part.
    Type: Application
    Filed: May 12, 2021
    Publication date: August 26, 2021
    Inventors: Osamu ITOU, Jin HIROSAWA
  • Publication number: 20210247653
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate includes a first signal line and a second signal line and being adjacent to each other in a first direction, a first scanning line and a second scanning line and being adjacent to each other in a second direction intersecting the first direction, a semiconductor layer connected to the first signal line and the first scanning line, a first transparent electrode in contact with the semiconductor layer, an organic insulating layer including a contact hole, and a second transparent electrode in contact with the first transparent electrode.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 12, 2021
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20210233955
    Abstract: According to one embodiment, a display device comprises a display portion comprising a plurality of pixels. Each of the pixels comprises an anode, a cathode, and a light-emitting diode disposed between the anode and the cathode. The light-emitting diode comprises an emitting layer and a resistive layer partly overlapping the emitting layer in planar view. A width w of a region of the emitting layer which does not overlap the resistive layer and a thickness d of the light-emitting diode satisfy w/d>1.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 29, 2021
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Publication number: 20210098665
    Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels provided to the substrate; a plurality of light emitting elements provided to the pixels; and a first light diffusion layer including a plurality of light diffusion structures and having a first surface and a second surface opposite to the first surface, the second surface facing the substrate with the light emitting elements interposed between the second surface and the substrate. The light diffusion structures each include a plurality of high refractive index layers and a plurality of low refractive index layers. The high refractive index layers and the low refractive index layers are alternately layered in a thickness direction of the first light diffusion layer. The high refractive index layers and the low refractive index layers are each curved and recessed in a direction from the first surface toward the second surface.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Inventor: Osamu ITOU
  • Publication number: 20210082994
    Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels; a first anisotropic diffusion layer and a second anisotropic diffusion layer that are layered; and a plurality of light emitting elements interposed between the first anisotropic diffusion layer and the substrate. The first anisotropic diffusion layer and the second anisotropic diffusion layer each include a high refractive index region and a low refractive index region in a mixed manner. An absolute value of a first angle formed by a boundary between the high refractive index region and the low refractive index region of the first anisotropic diffusion layer and a direction perpendicular to the substrate is different from an absolute value of a second angle formed by a boundary between the high refractive index region and the low refractive index region of the second anisotropic diffusion layer and the direction perpendicular to the substrate.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Inventor: Osamu ITOU
  • Publication number: 20200387038
    Abstract: According to one embodiment, an array substrate includes a semiconductor layer, scanning and signal lines, first and second insulating layers, a pedestal and a pixel electrode. The scanning line is opposed to the semiconductor layer. The first insulating layer is provided above the semiconductor layer. The signal line and the pedestal are connected to the semiconductor layer through first and second contact holes in the first insulating layer. The second insulating layer is provided above the pedestal. The pixel electrode is connected to the pedestal through a third contact hole in the second insulating layer. The signal line and the pedestal are provided in layers different from each other.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 10, 2020
    Applicant: Japan Display Inc.
    Inventor: Osamu ITOU
  • Patent number: 10690972
    Abstract: The purpose of the invention is to avoid the domain in high definition liquid crystal display devices. The representative structure is as follows. Scan lines extending in a first direction, video signal lines extending in a second direction, a pixel is formed in an area surrounded by the video signal lines and the scan lines, the pixel includes: a thin film transistor, a flattening film that covers the thin film transistor, a first electrode formed on the flattening film, a second electrode formed over the first electrode via an insulating film, and a contact hole that is formed in the flattening film to connect the first electrode and the thin film transistor; the second electrode is formed in common in plural pixels, and has a slit between the video signal lines; wherein the slit is formed continuously in a plurality of pixels arranged in the second direction.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 23, 2020
    Assignee: Japan Display Inc.
    Inventors: Osamu Itou, Toshimasa Ishigaki