Patents by Inventor Hiroki Sugiyama

Hiroki Sugiyama 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: 20230360911
    Abstract: After a nitride semiconductor layer is formed through crystal-growth of a nitride semiconductor containing Ga in a +c-axis direction on the other substrate, the other substrate on which the nitride semiconductor layer is formed is bonded to a substrate in a state where a surface on which the nitride semiconductor layer of the other substrate is formed is on the side of the substrate (a bonding step). This bonding is performed by bonding the surfaces to be bonded by a known direct bonding technology.
    Type: Application
    Filed: November 4, 2020
    Publication date: November 9, 2023
    Inventors: Yuki Yoshiya, Takuya Hoshi, Hiroki Sugiyama, Hideaki Matsuzaki
  • Publication number: 20230324751
    Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; spacers regulating a distance between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines arranged in a first direction; scan lines arranged in a second direction; switching elements each of which is coupled to a corresponding scan line and a corresponding signal line; and an organic insulating layer covering at least the switching elements. An area surrounded by the scan lines and the signal lines has a second area having a thickness less than that of the organic insulating layer in a first area overlapping the switching elements, the scan lines, and the signal lines in plan view. The spacers arranged in the first area have a thickness less than that of the organic insulating layer in the first area.
    Type: Application
    Filed: April 6, 2023
    Publication date: October 12, 2023
    Inventors: Yoshihide OHUE, Kentaro OKUYAMA, Hiroki SUGIYAMA, Yuuji OOMORI, Koji KITAMURA
  • Patent number: 11782306
    Abstract: According to an aspect, a display device includes: a first light-transmitting substrate; a second light-transmitting substrate disposed so as to face the first light-transmitting substrate; a liquid crystal layer comprising polymer dispersed liquid crystals between the first light-transmitting substrate and the second light-transmitting substrate; and a multilayered film on an outer surface or surfaces of at least one of the first light-transmitting substrate and the second light-transmitting substrate, the multilayered film being configured to reflect light from the first light-transmitting substrate or the second light-transmitting substrate, and absorb light from outside the first light-transmitting substrate or the second light-transmitting substrate.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: October 10, 2023
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Kentaro Okuyama, Manabu Mizuno
  • Publication number: 20230204996
    Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.
    Type: Application
    Filed: March 3, 2023
    Publication date: June 29, 2023
    Inventors: Hiroki SUGIYAMA, Kentaro OKUYAMA, Yoshihide OHUE, Yuuji OOMORI
  • Publication number: 20230207661
    Abstract: An oxide layer (109) including an oxide of an electrode (108) material is formed by heating in a portion of an electrode (108) in contact with a surface oxidized layer (107). The oxide layer (109) is placed between the electrode (108) and an i-AlGaN layer (106) in contact with both the i-AlGaN layer (106) and the electrode (108).
    Type: Application
    Filed: April 23, 2020
    Publication date: June 29, 2023
    Inventors: Takuya Hoshi, Yuki Yoshiya, Yuta Shiratori, Hiroki Sugiyama
  • Publication number: 20230187456
    Abstract: A TFT substrate includes a substrate, a plurality of transistors provided on the substrate and each including an oxide semiconductor layer, a plurality of scanning lines electrically coupled to gates of the transistors and extending in a first direction, a plurality of signal lines electrically coupled to the oxide semiconductor layers of the transistors and extending in a second direction intersecting the first direction, an insulating film covering the signal lines and the oxide semiconductor layers, and a coupling wire provided on the insulating film. At least one of the signal lines is separated in the second direction by a slit, and the coupling wire electrically couples one signal line and another signal line adjacent to each other in the second direction across the slit.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 15, 2023
    Inventors: Hiroki SUGIYAMA, Hiroshi INAMURA, Kaoru TAKETA, Yoshihide OHUE
  • Publication number: 20230152631
    Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.
    Type: Application
    Filed: January 17, 2023
    Publication date: May 18, 2023
    Inventors: Manabu MIZUNO, Kentaro OKUYAMA, Hiroshi INAMURA, Hiroki SUGIYAMA
  • Publication number: 20230106279
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.
    Type: Application
    Filed: December 12, 2022
    Publication date: April 6, 2023
    Applicant: Japan Display Inc.
    Inventors: Kentaro OKUYAMA, Yoshihide OHUE, Hiroki SUGIYAMA, Tomoyuki TADA
  • Patent number: 11619841
    Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: April 4, 2023
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Kentaro Okuyama, Yoshihide Ohue, Yuuji Oomori
  • Patent number: 11592712
    Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 28, 2023
    Assignee: Japan Display Inc.
    Inventors: Manabu Mizuno, Kentaro Okuyama, Hiroshi Inamura, Hiroki Sugiyama
  • Patent number: 11561423
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: January 24, 2023
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Yoshihide Ohue, Hiroki Sugiyama, Tomoyuki Tada
  • Publication number: 20220404657
    Abstract: A display device includes a front plate, a display panel disposed on a back surface side of the front plate, a backlight disposed on a back surface side of the display panel, a housing that accommodates the backlight, a support member disposed on the back surface side of the front plate and outside the housing, the support member supporting the front plate, and a clamping member clamping an outer edge of the front plate and an outer edge of the support member.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 22, 2022
    Inventors: Takuya NISHIMOTO, Hiroki SUGIYAMA
  • Publication number: 20220360341
    Abstract: A light-receiving device includes: a light guide plate that is a transparent member having, as main surfaces, a first surface and a second surface facing each other and has an emission end formed on at least one end portion of the light guide plate; a wave plate that is disposed on the first surface of the light guide plate and converts an optical signal of circularly polarized light into linearly polarized light; a hologram layer that is disposed on the second surface of the light guide plate and guides a traveling direction of the optical signal converted into the linearly polarized light toward the emission end of the light guide plate; and a light receiver that receives the optical signal emitted from the emission end of the light guide plate and converts the received optical signal into an electrical signal.
    Type: Application
    Filed: June 8, 2020
    Publication date: November 10, 2022
    Applicant: NEC Corporation
    Inventors: Koya TAKATA, Hiroki SUGIYAMA, Fujio OKUMURA
  • Patent number: 11460739
    Abstract: A display device includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions overlapping the first light-transmitting electrodes and provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light source configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode that at least partially overlaps the first light-transmitting electrode in the plan view with an insulating layer interposed therebetween. An area of the third light-transmitting electrode in the pixel in a display region closer to the light source is larger than an area of the third light-transmitting electrode in the pixel in a display region farther from the light source.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: October 4, 2022
    Assignee: Japan Display Inc.
    Inventors: Manabu Mizuno, Yoshihide Ohue, Hiroki Sugiyama, Kentaro Okuyama
  • Patent number: 11430875
    Abstract: A first barrier layer, a channel layer, a second barrier layer, and a first bonding layer made of high-resistance AlGaN doped with Fe are formed on a first substrate. Thereafter, the first substrate and the second substrate are pasted in a state where the first bonding layer and a second bonding layer made of high-resistance GaN doped with Fe are opposed to each other.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: August 30, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Hoshi, Yuki Yoshiya, Hiroki Sugiyama, Hideaki Matsuzaki
  • Publication number: 20220254909
    Abstract: A channel layer has a quantum well structure including InGaAs or InGaAsSb, and includes a first barrier layer, a well layer, and a second barrier layer. A first intermediate layer is provided between the first barrier layer and the well layer, and a second intermediate layer is provided between the second barrier layer and the well layer. The first and second intermediate layers include InGaAs or InGaAsSb having an In composition ratio greater than that of the first and second barrier layers and smaller than that of the well layer.
    Type: Application
    Filed: June 27, 2019
    Publication date: August 11, 2022
    Inventors: Manabu Mitsuhara, Hiroki Sugiyama
  • Publication number: 20220244606
    Abstract: A display device according to an aspect includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions that overlap the first light-transmitting electrodes in a plan view and are provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light emitter configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode and a conductive metal layer. The third light-transmitting electrode at least partially overlaps the first light-transmitting electrode in the plan view with an inorganic insulating layer interposed therebetween, and the conductive metal layer is stacked on the third light-transmitting electrode.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 4, 2022
    Applicant: Japan Display Inc.
    Inventors: Hiroki SUGIYAMA, Yoshihide OHUE, Manabu MIZUNO, Kentaro OKUYAMA
  • Publication number: 20220208998
    Abstract: An emitter contact layer, an emitter layer, a base layer, a p-type base layer, a collector layer, and a sub-collector layer are crystal-grown over a first substrate in this order with the main surface as the Group III polar surface. The emitter contact layer includes a nitride semiconductor that is made n-type at a relatively high concentration. The emitter layer includes a nitride semiconductor having a bandgap larger than that of the nitride semiconductor constituting the emitter contact layer. The base layer includes an undoped nitride semiconductor having a bandgap smaller than that of the nitride semiconductor constituting the emitter layer. The p-type base layer includes the same nitride semiconductor as the base layer and made p-type.
    Type: Application
    Filed: May 29, 2019
    Publication date: June 30, 2022
    Inventors: Takuya Hoshi, Yuki Yoshiya, Yuta Shiratori, Hiroki Sugiyama, Minoru Ida, Hideaki Matsuzaki
  • Publication number: 20220187652
    Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 16, 2022
    Inventors: Hiroki SUGIYAMA, Kentaro OKUYAMA, Yoshihide OHUE, Yuuji OOMORI
  • Patent number: 11340508
    Abstract: A display device according to an aspect includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions that overlap the first light-transmitting electrodes in a plan view and are provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light emitter configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode and a conductive metal layer. The third light-transmitting electrode at least partially overlaps the first light-transmitting electrode in the plan view with an inorganic insulating layer interposed therebetween, and the conductive metal layer is stacked on the third light-transmitting electrode.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 24, 2022
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Yoshihide Ohue, Manabu Mizuno, Kentaro Okuyama