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: 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: 20240106459
    Abstract: According to one embodiment, a compression device includes a substring generator and a match information generator. The substring generator receives generates substrings which are stored in a memory. Byte positions of the substrings are different from each other. The match information generator determines a first string, at least part thereof matching at least part of one of the substrings, and outputs match information. The match information includes a position of the memory storing the first string and a length of the at least part of the first string matching the at least part of one of the substrings.
    Type: Application
    Filed: June 12, 2023
    Publication date: March 28, 2024
    Inventors: Youhei FUKAZAWA, Sho KODAMA, Keiri NAKANISHI
  • 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
  • Publication number: 20220037604
    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: Application
    Filed: September 18, 2018
    Publication date: February 3, 2022
    Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI, TATSUYA RYOHWA, KANAKO NAKATA
  • Patent number: 11217763
    Abstract: To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer; and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: January 4, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Shinichi Kawato, Tokiyoshi Umeda, Manabu Niboshi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro, Shota Okamoto
  • Publication number: 20210351251
    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: Application
    Filed: September 27, 2018
    Publication date: November 11, 2021
    Inventors: YOUHEI NAKANISHI, SHOTA OKAMOTO
  • Publication number: 20210343989
    Abstract: A display device (500) includes a sub-pixel (100) including a light-emitting element layer (10). The sub-pixel (100) includes: a first electrode (12); an edge cover (11); a projection (15) projecting from the front face of the first electrode (12); and a functional layer (13). With respect to the front face of the first electrode (12) where a first height (h1) is a height up to a front face of a protrusion of the functional layer (13) provided along an edge of the projection (15), a second height (h2) is a height up to a tip of the projection (15), and a third height (h3) is a height up to a front face of the edge cover (11), the second height (h2) is greater than the first height (h1) and smaller than the third height (h3).
    Type: Application
    Filed: September 28, 2018
    Publication date: November 4, 2021
    Inventors: HIROKI IMABAYASHI, SHOTA OKAMOTO, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, HISAYUKI UTSUMI
  • Publication number: 20210273189
    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: Application
    Filed: July 24, 2018
    Publication date: September 2, 2021
    Inventors: HIROKI IMABAYASHI, MASAYUKI KANEHIRO, HISAYUKI UTSUMI, SHOTA OKAMOTO, YOUHEI NAKANISHI, TATSUYA RYOHWA, KANAKO NAKATA