Patents by Inventor Takuya Nakabayashi

Takuya Nakabayashi 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: 11506934
    Abstract: A light-emitting device includes a wiring board, a plurality of light-emitting elements disposed on the wiring board, a light-reflecting member covering a lateral surface of each of the plurality of light-emitting elements, a plurality of light-transmitting layers each located above an emission surface of a corresponding one of the plurality of light-emitting elements, a plurality of light-reflecting layers disposed on the plurality of light-transmitting layers, respectively, a light-diffusing layer disposed above the plurality of light-reflecting layers and the light-reflecting member, and a low-refractive-index layer located between the light-reflecting member and the light-diffusing layer, around each pair of one of the plurality of light-transmitting layers and one of the light-reflecting layers, and having a refractive index lower than that of the plurality of light-transmitting layers.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: November 22, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Ryohei Yamashita, Keiji Emura, Tsuyoshi Okahisa, Toshinobu Katsumata
  • Patent number: 11495587
    Abstract: A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 8, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tadaaki Ikeda, Tetsuya Ishikawa
  • Patent number: 11480319
    Abstract: A light emitting module includes: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole that, in a schematic top view, is located between the sectioning groove and the light source placement part; and a light source located in the light source placement part. A refractive index of an inside of the light adjusting hole is lower than a refractive index of the light guide member. In the schematic top view, the light adjusting hole is not positioned on a first straight line connecting a center of the light source and a farthest point in the sectioning groove, the farthest point being farthest from the center of the light source.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: October 25, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Toru Hashimoto, Keiji Emura
  • Publication number: 20220310896
    Abstract: A light-emitting unit includes: a wiring board; a plurality of light-emitting elements provided on the wiring board and electrically coupled with a wire layer of the wiring board; a light reflecting member provided on the wiring board, the light reflecting member covering a lateral surface of each of the plurality of light-emitting elements; a light diffusing layer covering the plurality of light-emitting elements and the light reflecting member; a wavelength conversion layer located on or above the light diffusing layer; and a plurality of light reflecting layers located between the light diffusing layer and the wavelength conversion layer, each of the light reflecting layers being located above a corresponding one of the plurality of light-emitting elements. An upper surface of the light reflecting member has a recess which includes at least one concave surface, and there is a space between the concave surface and the light diffusing layer.
    Type: Application
    Filed: June 17, 2022
    Publication date: September 29, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Takuya NAKABAYASHI, Toshinobu KATSUMATA, Noriaki HIRAIDE
  • Patent number: 11411144
    Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: August 9, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tomokazu Maruyama, Tetsuya Ishikawa
  • Patent number: 11393965
    Abstract: A light-emitting unit includes: a wiring board; a plurality of light-emitting elements provided on the wiring board and electrically coupled with a wire layer of the wiring board; a light reflecting member provided on the wiring board, the light reflecting member covering a lateral surface of each of the plurality of light-emitting elements; a light diffusing layer covering the plurality of light-emitting elements and the light reflecting member; a wavelength conversion layer located on or above the light diffusing layer; and a plurality of light reflecting layers located between the light diffusing layer and the wavelength conversion layer, each of the light reflecting layers being located above a corresponding one of the plurality of light-emitting elements. An upper surface of the light reflecting member has a recess which includes at least one concave surface, and there is a space between the concave surface and the light diffusing layer.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: July 19, 2022
    Assignee: Nichia Corporation
    Inventors: Takuya Nakabayashi, Toshinobu Katsumata, Noriaki Hiraide
  • Publication number: 20220209080
    Abstract: A light emitting device includes a substrate, a light emitting element, and a light reflecting member. The substrate includes a pair of connection terminals on a first main surface. The light emitting element is connected to the connection terminals by a molten material. The light reflecting member covers the light emitting element. The connection terminals each has a protruding portion at a position connected to the light emitting element over the first main surface of the substrate, the protruding portion protruding toward the light emitting element. The molten material covers a side surface of the protruding portion of each of the connection terminals. The protruding portion of each of the connection terminals, the molten material, and a space between the substrate and the light emitting element are embedded by the light reflecting member.
    Type: Application
    Filed: March 16, 2022
    Publication date: June 30, 2022
    Inventor: Takuya NAKABAYASHI
  • Publication number: 20220170611
    Abstract: A light emitting module includes: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole that, in a schematic top view, is located between the sectioning groove and the light source placement part; and a light source disposed in the light source placement part. A refractive index of an inside of the light adjusting hole is lower than a refractive index of the light guide member. In the schematic top view, the light adjusting hole is positioned to intersect with a first straight line connecting a center of the light source and a farthest point in the sectioning groove, the farthest point being farthest from the center of the light source.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Takuya NAKABAYASHI, Toru HASHIMOTO, Keiji EMURA
  • Publication number: 20220146739
    Abstract: A light-emitting module includes first and second light sources, first and second light guide parts, and a first light-modulating member. The first light guide part includes a first A-major surface, a first B-major surface, a first side surface positioned between the first A-major surface and the first B-major surface, and a first hole portion in which the first light source is disposed. The second light guide part includes a second A-major surface, a second B-major surface, a second side surface positioned between the second A-major surface and the second B-major surface, the second side surface facing the first side surface, and a second hole portion in which the second light source is disposed. The first light-modulating member is positioned at an upper side of the first A-major surface. The first light-modulating member overlaps the first A-major surface and the first side surface when viewed in top-view.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 12, 2022
    Inventors: Takuya NAKABAYASHI, Toru HASHIMOTO
  • Patent number: 11309465
    Abstract: A method of manufacturing a light emitting device includes: providing a substrate including a pair of connection terminals, the connection terminals each having a protruding portion at least on a first main surface of the connection terminal; providing a light emitting element on the protruding portion, the light emitting element having a semiconductor laminate and a pair of electrodes on a same surface of the semiconductor laminate; bonding the pair of the electrodes of the light emitting element and the pair of the connection terminals, respectively, by a molten material; and embedding a surface of the protruding portion of the connection terminals, a surface of the molten material, and a space between the substrate and the light emitting element into a light reflecting member.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: April 19, 2022
    Assignee: NICHIA CORPORATION
    Inventor: Takuya Nakabayashi
  • Publication number: 20220111415
    Abstract: The present invention provides a multilayer coating film-forming method that is capable of forming a multilayer coating film with excellent finished appearance and excellent luster. The aqueous base paint (X) is applied by using a rotary-atomization bell-shaped coater under coating conditions of a shaping air pressure of 0.15 to 0.25 MPa and a paint discharge amount of 100 to 300 cm3/min. The viscosity 60 seconds after the application of the aqueous base paint (X), measured at a temperature of 23° C. and a shear rate of 0.1 sec-1, is 90 to 160 Pa·s, the solids content 60 seconds after the application is 20 to 40 mass %, and the film thickness 60 seconds after the application is 17 to 35 ?m.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 14, 2022
    Applicants: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayuki ITOH, Nobuyoshi SUZUKI, Takuya NAKABAYASHI, Masahiro OMURA, Takao TSUKIMORI
  • Patent number: 11287105
    Abstract: A light emitting module includes: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole that, in a schematic top view, is located between the sectioning groove and the light source placement part; and a light source disposed in the light source placement part. A refractive index of an inside of the light adjusting hole is lower than a refractive index of the light guide member. In the schematic top view, the light adjusting hole is positioned to intersect with a first straight line connecting a center of the light source and a farthest point in the sectioning groove, the farthest point being farthest from the center of the light source.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: March 29, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Toru Hashimoto, Keiji Emura
  • Publication number: 20220066088
    Abstract: A method of manufacturing a light emitting module includes: providing an intermediate that includes a light guide having a first principal face and a second principal face opposing the first principal face, a plurality of light sources disposed on the second principal face of the light guide, and a wiring layer disposed on the second principal face and electrically connected to the plurality of light sources; allowing the plurality of light sources to emit light and measuring optical characteristics of the emitted light; and forming an optical characteristic correcting element in the intermediate based on the measured optical characteristics.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 3, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Keiji EMURA, Takuya NAKABAYASHI, Toru HASHIMOTO
  • Publication number: 20220066267
    Abstract: A light-emitting device includes a wiring board, a plurality of light-emitting elements disposed on the wiring board, a light-reflecting member covering a lateral surface of each of the plurality of light-emitting elements, a plurality of light-transmitting layers each located above an emission surface of a corresponding one of the plurality of light-emitting elements, a plurality of light-reflecting layers disposed on the plurality of light-transmitting layers, respectively, a light-diffusing layer disposed above the plurality of light-reflecting layers and the light-reflecting member, and a low-refractive-index layer located between the light-reflecting member and the light-diffusing layer, around each pair of one of the plurality of light-transmitting layers and one of the light-reflecting layers, and having a refractive index lower than that of the plurality of light-transmitting layers.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 3, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Takuya NAKABAYASHI, Ryohei YAMASHITA, Keiji EMURA, Tsuyoshi OKAHISA, Toshinobu KATSUMATA
  • Patent number: 11264542
    Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 1, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tomokazu Maruyama, Tetsuya Ishikawa
  • Publication number: 20220029066
    Abstract: A method of producing a light source device includes providing a light emitting device having a substrate including a base member that includes a bottom surface and a recess. The substrate further including a wiring portion in the recess. The method further including providing a support substrate having a support base member, a first wiring pattern on a top surface of the support base member and including a joining region, and an insulating region, and applying a solder member such that the solder member on the insulating region has a volume larger than that of the solder member on the joining region. The light emitting device is placed on the support substrate while the solder member is separate from a portion of the wiring portion positioned in the vicinity of the bottom surface and the wiring portion is joined to the joining region.
    Type: Application
    Filed: October 12, 2021
    Publication date: January 27, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Takuya NAKABAYASHI
  • Patent number: 11227979
    Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 18, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tomokazu Maruyama, Tetsuya Ishikawa
  • Publication number: 20220003915
    Abstract: A light-emitting module includes: a plurality of light sources; and a lightguide plate including a plurality of light source placement sections, in each of which at least one light source is arranged, arrayed in a first direction and a second direction orthogonal to the first direction. The lightguide plate defines at least one first-A light control groove and at least one first-B light control groove that extend parallel to the second direction between a first light source placement section and a second light source placement section adjacent to the first light source placement section in the first direction, and at least one second-A light control groove and at least one second-B light control groove that extend parallel to the first direction between the first light source placement section and a third light source placement section adjacent to the first light source placement section in the second direction.
    Type: Application
    Filed: July 1, 2021
    Publication date: January 6, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Takuya NAKABAYASHI, Daisuke KASAI, Takao NAKAUCHI
  • Patent number: 11201266
    Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 14, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tadaaki Ikeda
  • Patent number: 11195977
    Abstract: A light emitting device includes a light emitting element including a first surface; a light guide member covering at least a part of a lateral surface of the light emitting element; a first wavelength conversion member covering the first surface and including a first wavelength conversion particles; and a reflective member being in contact with the light emitting element. The first wavelength conversion member has a thickness of 60 ?m or more and 120 ?m or less. The first wavelength conversion particles have an average particle size of 4 ?m or longer and 12 ?m or smaller; the first wavelength conversion particles have a central particle size of 4 ?m or longer and 12 ?m or smaller. A weight ratio of the first wavelength conversion particles is 60% by weight or more and 75% by weight or less with respect to the total weight of the first wavelength conversion member.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: December 7, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Nakabayashi, Tetsuya Ishikawa