Patents by Inventor Daisuke Sanga

Daisuke Sanga 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: 9620689
    Abstract: A semiconductor light emitting device that achieves miniaturization and high brightness is provided. The semiconductor light emitting device has a light extraction surface (6) parallel to a lamination direction of a semiconductor layer (2). The semiconductor light emitting device includes a light guide member (3) placed on the semiconductor layer (2) and having a sloped surface (7) with a side surface opposite to the light extraction surface (6) sloped to the light extraction surface and a light-reflecting member (4) placed on a surface of the light guide member including at least the sloped surface of the light guide member.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: April 11, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Daisuke Sanga, Yuta Oka
  • Patent number: 9518718
    Abstract: Provided is a bandpass filter for a light emitting device that can improve the light emission efficiency in use for a light emitting device, and a light emitting device that can obtain the high light emission efficiency by using the bandpass filter. The light emitting device includes a substrate; a light emitting element disposed over the substrate; a phosphor-containing layer containing at least one kind of phosphor; and a bandpass filter disposed over a surface of the phosphor-containing layer on the light emitting element side, the bandpass filter including a multilayer film having a plurality of first and second dielectric layers, the second dielectric layer being disposed over the first dielectric layer.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: December 13, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Daisuke Sanga, Tomonori Morizumi, Naoki Azuma, Keisuke Sejiki, Kunihito Sugimoto
  • Publication number: 20160300987
    Abstract: A semiconductor light emitting device that achieves miniaturization and high brightness is provided. The semiconductor light emitting device has a light extraction surface (6) parallel to a lamination direction of a semiconductor layer (2). The semiconductor light emitting device includes a light guide member (3) placed on the semiconductor layer (2) and having a sloped surface (7) with a side surface opposite to the light extraction surface (6) sloped to the light extraction surface and a light-reflecting member (4) placed on a surface of the light guide member including at least the sloped surface of the light guide member.
    Type: Application
    Filed: June 16, 2016
    Publication date: October 13, 2016
    Applicant: NICHIA CORPORATION
    Inventors: Daisuke SANGA, Yuta OKA
  • Patent number: 9397270
    Abstract: A semiconductor light emitting device that achieves miniaturization and high brightness is provided. The semiconductor light emitting device has a light extraction surface (6) parallel to a lamination direction of a semiconductor layer (2). The semiconductor light emitting device includes a light guide member (3) placed on the semiconductor layer (2) and having a sloped surface (7) with a side surface opposite to the light extraction surface (6) sloped to the light extraction surface and a light-reflecting member (4) placed on a surface of the light guide member including at least the sloped surface of the light guide member.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 19, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Daisuke Sanga, Yuta Oka
  • Patent number: 9180549
    Abstract: Provided is a wavelength conversion member, a light emitting device, and a method of manufacturing the light emitting device, with which leakage of unconverted light and contamination of an upper surface of an electrode are prevented, and restriction on a position at which the electrode is to be provided on the light-emitting element is eliminated. The wavelength conversion member provided on a light extracting side of a light-emitting element having an electrode on the light extracting side and configured to convert a wavelength of outgoing light from the light-emitting element includes: a wavelength converting plate having a phosphor excited by the outgoing light, and a through-hole penetrating between a front surface and a back surface so as to correspond to the electrode; and a via electrode made of a conductive material filled in the through-hole, and having an upper surface exposed at the front surface of the wavelength converting plate.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: November 10, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Daisuke Sanga
  • Publication number: 20150303356
    Abstract: A semiconductor light emitting device that achieves miniaturization and high brightness is provided. The semiconductor light emitting device has a light extraction surface (6) parallel to a lamination direction of a semiconductor layer (2). The semiconductor light emitting device includes a light guide member (3) placed on the semiconductor layer (2) and having a sloped surface (7) with a side surface opposite to the light extraction surface (6) sloped to the light extraction surface and a light-reflecting member (4) placed on a surface of the light guide member including at least the sloped surface of the light guide member.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Applicant: Nichia Corporation
    Inventors: Daisuke SANGA, Yuta OKA
  • Patent number: 9136450
    Abstract: A light emitting device is provided with a base member, an interconnect pattern disposed on an upper surface of the base member, a light reflecting layer comprising a first layer disposed on a part of the interconnect pattern and formed from a metal material, and a second layer made of a dielectric multilayer reflecting film made with stacked layers of dielectric films having different refractive indices and covering an upper surface and side surfaces of the first layer, a light emitting element chip fixed so as to face at least a part of the light reflecting layer, and a light transmissive sealing member sealing the light reflecting layer and the light emitting element chip.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 15, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Daisuke Sanga
  • Patent number: 9048405
    Abstract: The light emitting device comprising a light emitting element; and a wavelength converting member having a first face and a second face, in which light emitted from the light emitting element enters in through the first face, and a part of the second face serves as a light emitting face, wherein the light emitting element further comprises a reflection control structure around the light emitting face of the second face, and the reflection control structure comprises a reflection film on the wavelength converting member and an anti-reflection film on the reflection film.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: June 2, 2015
    Assignee: NICHIA CORPORATION
    Inventors: Daisuke Sanga, Takuya Okada, Keisuke Sejiki, Kunihito Sugimoto, Takao Kosugi, Dai Wakamatsu
  • Patent number: 9048385
    Abstract: In a nitride semiconductor light emitting diode including a substrate made of a nitride semiconductor, a first conductive-type nitride semiconductor layer formed on the substrate, an active layer made of a nitride semiconductor, and a second conductive-type nitride semiconductor layer, characterized in that light emitted is extracted from the under surface side of the substrate or the upper surface side of the second conductive-type nitride semiconductor layer, an intermediate layer is formed between the substrate and the active layer, and dislocations is allowed to generates from the dislocation generating layer as the origin and to distribute in a light emitting region of the active layer.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: June 2, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Daisuke Sanga
  • Publication number: 20150124457
    Abstract: A light emitting device can further improve light extraction efficiency. A method of manufacturing such a light emitting device can also prove advantageous. The light emitting device includes a light emitting element, a light-transmissive member which is disposed on a light extracting surface side of the light emitting element, and a reflecting layer disposed on an element bonding surface of the light transmissive member where the light emitting element is disposed and adjacent to the light emitting element. The light-transmissive member, in a plan view, has a planar dimension greater than the light extracting surface of the light emitting element.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Inventors: Daisuke SANGA, Masatsugu ICHIKAWA, Shunsuke MINATO, Toru TAKASONE, Masahiko SANO
  • Patent number: 8980661
    Abstract: Provided is a method for manufacturing a light emitting device comprising a light emitting element and an optical part, the method comprising the steps of (i) forming a hydroxyl film on a bonding surface of each of the light emitting element and the optical part by an atomic layer deposition, and (ii) bonding the bonding surfaces of the light emitting element and the optical part with each other, each of the bonding surfaces having the hydroxyl film formed thereon, wherein a substep is repeated at least one time in the step (i), in which substep a first raw material gas and a second raw material gas are sequentially supplied onto the bonding surfaces of the light emitting element and the optical part, and wherein the bonding of the bonding surfaces in the step (ii) is performed without a heating treatment.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: March 17, 2015
    Assignee: Nichia Corporation
    Inventors: Masatsugu Ichikawa, Masahiko Sano, Daisuke Sanga, Toru Takasone, Shunsuke Minato
  • Patent number: 8981420
    Abstract: A nitride semiconductor device includes a conductive oxide film with high reliability is provided. The nitride semiconductor device having a nitride semiconductor layer includes a conductive oxide film on the nitride semiconductor layer and a pad electrode on the conductive oxide film. The pad electrode includes a junction layer that contains a first metal and is in contact with the conductive oxide film, and a pad layer that contains a second metal.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: March 17, 2015
    Assignee: Nichia Corporation
    Inventors: Takeshi Kususe, Yoshiyuki Aihara, Daisuke Sanga, Kouichiroh Deguchi
  • Publication number: 20150062904
    Abstract: Provided is a wavelength conversion member, a light emitting device, and a method of manufacturing the light emitting device, with which leakage of unconverted light and contamination of an upper surface of an electrode are prevented, and restriction on a position at which the electrode is to be provided on the light-emitting element is eliminated. The wavelength conversion member provided on a light extracting side of a light-emitting element having an electrode on the light extracting side and configured to convert a wavelength of outgoing light from the light-emitting element includes: a wavelength converting plate having a phosphor excited by the outgoing light, and a through-hole penetrating between a front surface and a back surface so as to correspond to the electrode; and a via electrode made of a conductive material filled in the through-hole, and having an upper surface exposed at the front surface of the wavelength converting plate.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventor: Daisuke SANGA
  • Publication number: 20150041844
    Abstract: A light emitting device has a lens, extended to outside of the mounting substrate on which a semiconductor a light emitting element is mounted, and leakage of light is reduced. A light emitting element, a substrate having the light emitting element mounted on its upper surface, and a lens, having a curved upper surface encloses the light emitting element and the upper surface of the substrate is included. From the bottom surface of the lens, a lower surface of the substrate is exposed. In a top view from a perpendicular direction to the upper surface of the substrate, the bottom surface of the lens includes an outer extending portion where the bottom surface is extended to outside of the substrate, and a inclined portion, which inclines with respect to a direction approximately in parallel to the upper surface of the substrate, at an end portion of the outer extending portion.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventors: Tsuyoshi OKAHISA, Yuta OKA, Daisuke SANGA
  • Publication number: 20140322844
    Abstract: Provided is a method for manufacturing a light emitting device comprising a light emitting element and an optical part, the method comprising the steps of (i) forming a hydroxyl film on a bonding surface of each of the light emitting element and the optical part by an atomic layer deposition, and (ii) bonding the bonding surfaces of the light emitting element and the optical part with each other, each of the bonding surfaces having the hydroxyl film formed thereon, wherein a substep is repeated at least one time in the step (i), in which substep a first raw material gas and a second raw material gas are sequentially supplied onto the bonding surfaces of the light emitting element and the optical part, and wherein the bonding of the bonding surfaces in the step (ii) is performed without a heating treatment.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Masatsuga Ichikawa, Masahiko Sano, Daisuke Sanga, Toru Takasone, Shunsuke Minato
  • Publication number: 20140185299
    Abstract: Provided is a bandpass filter for a light emitting device that can improve the light emission efficiency in use for a light emitting device, and a light emitting device that can obtain the high light emission efficiency by using the bandpass filter. The light emitting device includes a substrate; a light emitting element disposed over the substrate; a phosphor-containing layer containing at least one kind of phosphor; and a bandpass filter disposed over a surface of the phosphor-containing layer on the light emitting element side, the bandpass filter including a multilayer film having a plurality of first and second dielectric layers, the second dielectric layer being disposed over the first dielectric layer.
    Type: Application
    Filed: December 24, 2013
    Publication date: July 3, 2014
    Applicant: NICHIA COPRORATION
    Inventors: Daisuke SANGA, Tomonori Morizumi, Naoki Azuma, Keisuke Sejiki, Kunihito Sugimoto
  • Publication number: 20140175491
    Abstract: The light emitting device comprising a light emitting element; and a wavelength converting member having a first face and a second face, in which light emitted from the light emitting element enters in through the first face, and a part of the second face serves as a light emitting face, wherein the light emitting element further comprises a reflection control structure around the light emitting face of the second face, and the reflection control structure comprises a reflection film on the wavelength converting member and an anti-reflection film on the reflection film.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Daisuke SANGA, Takuya OKADA, Keisuke SEJIKI, Kunihito SUGIMOTO, Takao KOSUGI, Dai WAKAMATSU
  • Publication number: 20140103383
    Abstract: A light emitting device is provided with a base member, an interconnect pattern disposed on an upper surface of the base member, a light reflecting layer comprising a first layer disposed on a part of the interconnect pattern and formed from a metal material, and a second layer made of a dielectric multilayer reflecting film made with stacked layers of dielectric films having different refractive indices and covering an upper surface and side surfaces of the first layer, a light emitting element chip fixed so as to face at least a part of the light reflecting layer, and a light transmissive sealing member sealing the light reflecting layer and the light emitting element chip.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: Nichia Corporation
    Inventor: Daisuke SANGA
  • Patent number: 8674387
    Abstract: A light emitting device is provided with a base member, an interconnect pattern disposed on an upper surface of the base member, a light reflecting layer comprising a first layer disposed on a part of the interconnect pattern and formed from a metal material, and a second layer made of a dielectric multilayer reflecting film made with stacked layers of dielectric films having different refractive indices and covering an upper surface and side surfaces of the first layer, a light emitting element chip fixed so as to face at least a part of the light reflecting layer, and a light transmissive sealing member sealing the light reflecting layer and the light emitting element chip.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: March 18, 2014
    Assignee: Nichia Corporation
    Inventor: Daisuke Sanga
  • Patent number: D747817
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 19, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Yuta Oka, Daisuke Sanga