Patents by Inventor Youhei Nakanishi

Youhei Nakanishi 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).

  • Patent number: 12150331
    Abstract: Provided are a TFT layer, a light-emitting element layer provided with a plurality of light-emitting elements each including a first electrode, a function layer, and a second electrode, and a sealing layer configured to seal the light-emitting element layer. The second electrode is an electrode common to the plurality of light-emitting elements and including metal nanowires. The function layer includes a light-emitting layer and an electron transport layer provided between the light-emitting layer and the second electrode. The electron transport layer includes zinc oxide nanoparticles and a water soluble resin.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: November 19, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisayuki Utsumi, Youhei Nakanishi, Masayuki Kanehiro, Shota Okamoto, Hiroki Imabayashi
  • Patent number: 12101968
    Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements including light-emitting elements configured to emit lights of luminescent colors different from each other, each light-emitting element being provided with a first electrode, a function layer including a light-emitting layer, and a second electrode in this order, the second electrode includes metal nanowires, and the light-emitting element layer is provided with a pixel bank segmenting the metal nanowires at least for each luminescent color.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: September 24, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Youhei Nakanishi
  • Patent number: 12082430
    Abstract: Provided is a light-emitting device including a light-emitting element including a first electrode, a second electrode, and a quantum dot layer between the first electrode and the second electrode, wherein, in the quantum dot layer, quantum dots each including a core, a shell covering the core, and a ligand coordinated with a surface of the shell and having defect compensation properties are layered.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: September 3, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroki Imabayashi, Masayuki Kanehiro, Hisayuki Utsumi, Shota Okamoto, Youhei Nakanishi, Tatsuya Ryohwa, Kanako Nakata
  • Publication number: 20240276852
    Abstract: A display device includes: a base substrate layer; a thin film transistor layer provided on the base substrate layer; and a light-emitting element layer provided on the thin film transistor layer, the light-emitting element layer including a plurality of pixel electrodes, a common edge cover, a plurality of light-emitting function layers, and a common electrode layered in order corresponding to a plurality of subpixels constituting a display region, wherein the edge cover covers a peripheral edge portion of each of the pixel electrodes, in each of the subpixels, a portion of the plurality of pixel electrodes exposed from the edge cover constitutes a light-emitting region, and a portion of the plurality of pixel electrodes overlapping the edge cover constitutes a non-light-emitting region, and a reflective surface having an uneven shape is provided in the non-light-emitting region.
    Type: Application
    Filed: August 18, 2021
    Publication date: August 15, 2024
    Inventor: Youhei NAKANISHI
  • Patent number: 12022673
    Abstract: A display device includes an anode electrode a cathode electrode a light-emitting layer, and an electron transport layer. The light-emitting layer is provided between the anode electrode and the cathode electrode. The electron transport layer is provided between the cathode electrode and the light-emitting layer. The electron transport layer includes a nanoparticle of a metal oxide, and an organic modifier configured to cover a surface of the nanoparticle and having electron donating characteristics.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: June 25, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisayuki Utsumi, Youhei Nakanishi, Masayuki Kanehiro, Shota Okamoto, Hiroki Imabayashi
  • Publication number: 20240206235
    Abstract: A display device comprises a bank in which a plurality of holes are formed; and a plurality of light-emitting layers formed in the plurality of holes, wherein, among the plurality of light-emitting layers, a light-emitting layer, which is provided closer to a position in which the plurality of holes are low in density, exhibits a greater emission wavelength.
    Type: Application
    Filed: May 28, 2021
    Publication date: June 20, 2024
    Inventor: Youhei NAKANISHI
  • Patent number: 11963402
    Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements. The light-emitting element layer includes, for each of the plurality of light-emitting elements, a first electrode and a plurality of openings exposing the first electrode, and includes an edge cover covering an end portion of the first electrode, a plurality of light-emitting layers covering each of the plurality of openings, and a second electrode that is common to the plurality of light-emitting elements and covers the plurality of light-emitting layers. The second electrode includes a metal nanowire. Furthermore, the light-emitting element layer includes an auxiliary wiring line provided in a lattice pattern in a position overlapping the edge cover, and the auxiliary wiring line and the metal nanowire are electrically connected to each other.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 16, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masayuki Kanehiro, Youhei Nakanishi, Takeshi Ishida
  • Patent number: 11957001
    Abstract: A bank has an opening including a first opening and a second opening. The second opening extends from the first opening in such a direction that the second opening overlaps the first electrode. The second opening at least partially overlaps the first electrode. The first electrode has an end close to the first opening and overlapping the second opening. The second opening has a maximum width smaller than a maximum width of the first opening. The widths are measured perpendicular to the direction in which the second opening extends from the first opening.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: April 9, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Youhei Nakanishi, Shota Okamoto
  • Publication number: 20240055551
    Abstract: A light-emitting device includes a bank provided with an opening including an opening sidewall that is inclined, a lower layer electrode provided with an inclined face and formed on the bank, closing the opening, a upper layer electrode provided with an inclined face and formed above the second electrode, and an EL layer provided with an inclined face and formed between the lower layer electrode and the upper layer electrode, adjacently to the lower layer electrode and the upper layer electrode. The light-emitting device further includes a first refractive index layer having a refractive index higher than 1.7, and a second refractive index layer having a refractive index lower than the refractive index of the first refractive index layer. The first and second refractive index layers are formed in this order on the upper layer electrode at a through-hole.
    Type: Application
    Filed: April 14, 2021
    Publication date: February 15, 2024
    Inventors: Masayuki KANEHIRO, Youhei NAKANISHI, Shota OKAMOTO
  • Patent number: 11778843
    Abstract: A light-emitting element includes an anode, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, and a cathode, in this order. The electron transport layer includes a particulate metal oxide and a conductive resin that disperses the metal oxide.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: October 3, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisayuki Utsumi, Youhei Nakanishi, Masayuki Kanehiro, Shota Okamoto, Hiroki Imabayashi, Tatsuya Ryohwa, Kanako Nakata
  • Publication number: 20230276648
    Abstract: Provided are a support substrate, a thin-film transistor layer, a light emitter layer having a plurality of light emitters that emit mutually different colors of light, and a sealing layer sealing the light emitter layer. Each light emitter includes a first electrode, a hole transportation layer, an emissive layer, an electron transportation layer, and a second electrode. The electron transportation layer contains an oxide nanoparticle, a binder resin, and a photo-initiator.
    Type: Application
    Filed: October 24, 2019
    Publication date: August 31, 2023
    Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHA
    Inventors: HISAYUKI UTSUMI, MASAYUKI KANEHIRO, YOUHEI NAKANISHI
  • Patent number: 11502266
    Abstract: Alight-emitting element includes an anode electrode, a cathode electrode, a light-emitting layer, a positive hole transport layer, and an electron transport layer. The light-emitting layer, the positive hole transport layer, and the electron transport layer are provided between the anode electrode and the cathode electrode. The light-emitting layer includes QD phosphor particles, a positive hole transport substance configured to transport positive holes transported thereto by the positive hole transport layer, an electron transport substance configured to transport electrons transported thereto by the electron transport layer, and a photosensitive host material.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 15, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Yuto Tsukamoto, Masayuki Kanehiro, Youhei Nakanishi
  • Publication number: 20220293881
    Abstract: A display device comprises: a display region having a plurality of pixels; and a frame region, the display region including: a thin-film transistor layer; a light-emitting-element layer provided above the thin-film transistor layer; and a sealing layer provided above the light-emitting-element layer, the light-emitting-element layer including: a first electrode; a second electrode; a light-emitting layer provided between the first electrode and the second electrode; and an electron-transport layer provided between the light-emitting layer and the second electrode, and the electron-transport layer containing: nanoparticles of metal oxide; and a binding resin.
    Type: Application
    Filed: September 6, 2019
    Publication date: September 15, 2022
    Inventors: Hisayuki UTSUMI, Masayuki KANEHIRO, Youhei NAKANISHI, Yoshihiro UETA
  • Publication number: 20220278189
    Abstract: A display device includes: a display region, a frame region, a thin-film transistor layer, and a light emitter layer including a plurality of light emitters each having a first electrode, a light-emitting layer, and a second electrode. The plurality of light emitters emits mutually different colors of light. The second electrode is shared among the plurality of light emitters and contains a metal nanowire. The frame region includes a bank having a frame shape surrounding the display region and defining an end of the second electrode. A conductive film is disposed closer to the display region than the bank is, the conductive film electrically connecting together the terminal section and the second electrode. The conductive film includes a contact portion being in contact with the metal nanowire. The contact portion has a plurality of asperities disposed on a contact surface being in contact with the metal nanowire.
    Type: Application
    Filed: September 19, 2019
    Publication date: September 1, 2022
    Inventors: YOUHEI NAKANISHI, MASAYUKI KANEHIRO
  • Patent number: 11377591
    Abstract: A QD particle dispersion contains a surface modification compound that protects a surface of QD phosphor particles dispersed in a solvent. The surface modification compound includes a heteroatom-containing functional group and a chain-type saturated hydrocarbon group. The QD particle dispersion is configured such that the absolute value of a difference between the surface free energy of an underlayer that provides a foundation for forming a QD layer in the light-emitting element and the surface free energy of the QD layer is 5 mN/m or less.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 5, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kanako Nakata, Tatsuya Ryohwa, Hiroshi Fukunaga, Makoto Izumi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro
  • Publication number: 20220199716
    Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements including light-emitting elements configured to emit lights of luminescent colors different from each other, each light-emitting element being provided with a first electrode, a function layer including a light-emitting layer, and a second electrode in this order, the second electrode includes metal nanowires, and the light-emitting element layer is provided with a pixel bank segmenting the metal nanowires at least for each luminescent color.
    Type: Application
    Filed: April 16, 2019
    Publication date: June 23, 2022
    Inventor: YOUHEI NAKANISHI
  • Publication number: 20220173178
    Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements. The light-emitting element layer includes, for each of the plurality of light-emitting elements, a first electrode and a plurality of openings exposing the first electrode, and includes an edge cover covering an end portion of the first electrode, a plurality of light-emitting layers covering each of the plurality of openings, and a second electrode that is common to the plurality of light-emitting elements and covers the plurality of light-emitting layers. The second electrode includes a metal nanowire. Furthermore, the light-emitting element layer includes an auxiliary wiring line provided in a lattice pattern in a position overlapping the edge cover, and the auxiliary wiring line and the metal nanowire are electrically connected to each other.
    Type: Application
    Filed: March 25, 2019
    Publication date: June 2, 2022
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: MASAYUKI KANEHIRO, YOUHEI NAKANISHI, TAKESHI ISHIDA
  • Publication number: 20220173348
    Abstract: Provided are a TFT layer, a light-emitting element layer provided with a plurality of light-emitting elements each including a first electrode, a function layer, and a second electrode, and a sealing layer configured to seal the light-emitting element layer. The second electrode is an electrode common to the plurality of light-emitting elements and including metal nanowires. The function layer includes a light-emitting layer and an electron transport layer provided between the light-emitting layer and the second electrode. The electron transport layer includes zinc oxide nanoparticles and a water soluble resin.
    Type: Application
    Filed: March 6, 2019
    Publication date: June 2, 2022
    Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI
  • Publication number: 20220140057
    Abstract: A display device includes a display region and a frame region surrounding the display region. The display device includes a TFT layer, a light-emitting element layer formed with a plurality of light-emitting elements each including a first electrode, a light-emitting layer, and a second electrode, and having a luminescent color different from each other, and a sealing layer including an organic film and configured to seal the light-emitting element layer. The second electrode is an electrode common to the plurality of light-emitting elements, and includes metal nanowires which are mesh-shaped.
    Type: Application
    Filed: March 6, 2019
    Publication date: May 5, 2022
    Inventors: MASAYUKI KANEHIRO, YOUHEI NAKANISHI, HIROKI IMABAYASHI
  • Publication number: 20220037609
    Abstract: A display device includes an anode electrode a cathode electrode a light-emitting layer, and an electron transport layer. The light-emitting layer is provided between the anode electrode and the cathode electrode. The electron transport layer is provided between the cathode electrode and the light-emitting layer. The electron transport layer includes a nanoparticle of a metal oxide, and an organic modifier configured to cover a surface of the nanoparticle and having electron donating characteristics.
    Type: Application
    Filed: December 11, 2018
    Publication date: February 3, 2022
    Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI