Patents by Inventor Toshiaki MORIWAKI

Toshiaki MORIWAKI 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: 11616180
    Abstract: A light emitting device includes a base, a first external terminal, a second external terminal, a plurality of wirings respectively electrically connecting the first external terminal and the second external terminal, and a plurality of light emitting elements each electrically connected to a corresponding one of the wirings. The wirings include a first wiring connecting the first external terminal and the second external terminal at a smallest distance, a second wiring longer than the first wiring, and a third wiring longer than the second wiring. The first, second, and third wirings have a substantially equal electric resistance. At least two of the first, second and third wirings are each provided with at least two of the light emitting elements with an average width in an intermediate region between adjacent ones of the light emitting elements being smaller than an average width in a region other than the intermediate region.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: March 28, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Masaaki Katsumata, Koji Taguchi, Toshiaki Moriwaki
  • Patent number: 11508881
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: November 22, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Mamoru Imada, Toshiaki Moriwaki, Yusaku Achi, Ryohei Yamashita
  • Patent number: 11391878
    Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: July 19, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Toshinobu Katsumata, Seitaro Akagawa, Toshiaki Moriwaki
  • Patent number: 11221519
    Abstract: Provided is a method of manufacturing a light emitting module, the method including: providing a light guiding plate having a first main surface serving as a lighting surface, and a second main surface opposite to the first main surface, the second main surface defining a recess thereon, preparing a light emitting element unit by attaching a wavelength conversion portion to a light emitting element having electrodes and a light emitting surface; providing a light diffusion portion at a bottom of the recess; depositing the light emitting element unit onto the light diffusion portion in the recess; and forming a terminal having an electrical conductivity on the electrodes of the light emitting element.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: January 11, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Mamoru Imada, Toshiaki Moriwaki, Yusaku Achi
  • Patent number: 11143808
    Abstract: A light emitting module have a translucent light guide plate, which has a first primary surface that emits light and an opposite second primary surface, and a plurality of light sources disposed at given intervals on the second primary surface of the light guide plate. The light guide plate is made up of a plurality of light emitting cell regions with a light source disposed in the center section of each of the plurality of light emitting cell regions, an optically functional area is established on the first primary surface in each of the plurality of light emitting cell regions, and each light source is disposed on the second primary surface in a position opposite the corresponding optically functional area. The second primary surface has reflecting depressions at the boundaries between adjacent light-emitting cell regions, and the first primary surface has reflecting grooves positioned away from the center of each cell near the cell boundary.
    Type: Grant
    Filed: December 28, 2019
    Date of Patent: October 12, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Yusaku Achi, Toshiaki Moriwaki
  • Publication number: 20210302644
    Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Toshinobu Katsumata, Seitaro Akagawa, Toshiaki Moriwaki
  • Patent number: 11106077
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; a resin member arranged between the plurality of wavelength conversion members and covering lateral surfaces of the plurality of wavelength conversion members; and a lightguide plate having a first primary surface and a second primary surface, and arranged on the resin member and the plurality of wavelength conversion members so that the second primary surface faces the resin member and the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions on the second primary surface that are located over the plurality of wavelength conversion members.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: August 31, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Mamoru Imada, Toshiaki Moriwaki, Yusaku Achi, Ryohei Yamashita
  • Patent number: 11061178
    Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: July 13, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Toshinobu Katsumata, Seitaro Akagawa, Toshiaki Moriwaki
  • Publication number: 20210193881
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Mamoru IMADA, Toshiaki MORIWAKI, Yusaku ACHI, Ryohei YAMASHITA
  • Patent number: 11035994
    Abstract: A light-emitting module includes: a light guide plate having a first surface on which a plurality of first recesses arranged in rows and columns and a grid-shaped groove portion surrounding each of the plurality of first recesses are provided, and a second surface located on the opposite side from the first surface; a plurality of light-emitting elements each disposed inside a corresponding one of the plurality of first recesses; a first light transmission member disposed inside the groove portion of the light guide plate, and having a refractive index lower than a refractive index of the light guide plate; and a reflective resin layer covering the first surface of the light guide plate and the first light transmission member.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: June 15, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Yusaku Achi, Toshiaki Moriwaki, Ryohei Yamashita
  • Patent number: 10971657
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: April 6, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Mamoru Imada, Toshiaki Moriwaki, Yusaku Achi, Ryohei Yamashita
  • Publication number: 20200371398
    Abstract: Provided is a method of manufacturing a light emitting module, the method including: providing a light guiding plate having a first main surface serving as a lighting surface, and a second main surface opposite to the first main surface, the second main surface defining a recess thereon, preparing a light emitting element unit by attaching a wavelength conversion portion to a light emitting element having electrodes and a light emitting surface; providing a light diffusion portion at a bottom of the recess; depositing the light emitting element unit onto the light diffusion portion in the recess; and forming a terminal having an electrical conductivity on the electrodes of the light emitting element.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Mamoru IMADA, Toshiaki MORIWAKI, Yusaku ACHI
  • Publication number: 20200343424
    Abstract: A light emitting device includes a base, a first external terminal, a second external terminal, a plurality of wirings respectively electrically connecting the first external terminal and the second external terminal, and a plurality of light emitting elements each electrically connected to a corresponding one of the wirings. The wirings include a first wiring connecting the first external terminal and the second external terminal at a smallest distance, a second wiring longer than the first wiring, and a third wiring longer than the second wiring. The first, second, and third wirings have a substantially equal electric resistance. At least two of the first, second and third wirings are each provided with at least two of the light emitting elements with an average width in an intermediate region between adjacent ones of the light emitting elements being smaller than an average width in a region other than the intermediate region.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 29, 2020
    Inventors: Masaaki KATSUMATA, Koji TAGUCHI, Toshiaki MORIWAKI
  • Patent number: 10775669
    Abstract: A light emitting module includes a light transmissive light guiding plate, a light adjustment portion, and a light emitting element. The light guiding plate has a first main surface serving as a light emitting surface which emits light outside, and a second main surface opposite to the first main surface. The second main surface is provided with a recess. The light adjustment portion is disposed in the recess of the light guiding plate. The light emitting element is bonded to the light adjustment portion. The light adjustment portion includes a wavelength conversion portion and a light diffusion portion. The light diffusion portion has a wavelength conversion portion side on which the wavelength conversion portion is bonded. The light diffusion portion is disposed on a bottom of the recess. The wavelength conversion portion is bonded to the light emitting element.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 15, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Mamoru Imada, Toshiaki Moriwaki, Yusaku Achi
  • Publication number: 20200284968
    Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 10, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei YAMASHITA, Toshinobu KATSUMATA, Seitaro AKAGAWA, Toshiaki MORIWAKI
  • Patent number: 10707389
    Abstract: A light emitting device includes a light emitting surface, a back surface arranged on an opposite side of the light emitting surface, a mounting surface arranged between the light emitting surface and the back surface, and includes a light emitting element, a light shielding member, first and second terminal coating films, and first and second electrically conductive members. The light emitting element has first and second electrodes arranged on the second main surface. The light shielding member covers the lateral surface of the light emitting element and does not cover the first main surface of the light emitting element. The first and second terminal coating films are electrically connected to the first and second electrodes respectively, and arranged continuously on the back surface and the mounting surface of the light emitting device. The first and second electrically conductive members are in contact with the first and second electrodes respectively.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: July 7, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Takahiro Tani, Hiroki Yuu, Toshiaki Moriwaki
  • Publication number: 20200209461
    Abstract: A light-emitting module includes: a light guide plate having a first surface on which a plurality of first recesses arranged in rows and columns and a grid-shaped groove portion surrounding each of the plurality of first recesses are provided, and a second surface located on the opposite side from the first surface; a plurality of light-emitting elements each disposed inside a corresponding one of the plurality of first recesses; a first light transmission member disposed inside the groove portion of the light guide plate, and having a refractive index lower than a refractive index of the light guide plate; and a reflective resin layer covering the first surface of the light guide plate and the first light transmission member.
    Type: Application
    Filed: December 24, 2019
    Publication date: July 2, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Yusaku ACHI, Toshiaki MORIWAKI, Ryohei YAMASHITA
  • Publication number: 20200209460
    Abstract: A light emitting module have a translucent light guide plate, which has a first primary surface that emits light and an opposite second primary surface, and a plurality of light sources disposed at given intervals on the second primary surface of the light guide plate. The light guide plate is made up of a plurality of light emitting cell regions with a light source disposed in the center section of each of the plurality of light emitting cell regions, an optically functional area is established on the first primary surface in each of the plurality of light emitting cell regions, and each light source is disposed on the second primary surface in a position opposite the corresponding optically functional area. The second primary surface has reflecting depressions at the boundaries between adjacent light-emitting cell regions, and the first primary surface has reflecting grooves positioned away from the center of each cell near the cell boundary.
    Type: Application
    Filed: December 28, 2019
    Publication date: July 2, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Yusaku ACHI, Toshiaki MORIWAKI
  • Publication number: 20200044121
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Mamoru IMADA, Toshiaki MORIWAKI, Yusaku ACHI, Ryohei YAMASHITA
  • Publication number: 20200041836
    Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; a resin member arranged between the plurality of wavelength conversion members and covering lateral surfaces of the plurality of wavelength conversion members; and a lightguide plate having a first primary surface and a second primary surface, and arranged on the resin member and the plurality of wavelength conversion members so that the second primary surface faces the resin member and the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions on the second primary surface that are located over the plurality of wavelength conversion members.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Mamoru IMADA, Toshiaki MORIWAKI, Yusaku ACHI, Ryohei YAMASHITA