Patents by Inventor Motokazu Yamada

Motokazu Yamada 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).

  • Publication number: 20150034992
    Abstract: A light emitting device includes a substrate, metallization, a light emitting element, conducting wire, light reflective resin, and insulating material. The metallization is provided on a surface of the substrate that is made of insulating substance. The light emitting element is mounted on the substrate. The conducting wire electrically connects the metallization and the light emitting element. The light reflective resin is provided on the substrate to reflect light from the light emitting element. The insulating material covers at least part of metallization surfaces. The insulating material is established to come in contact with a side of the light emitting element.
    Type: Application
    Filed: October 20, 2014
    Publication date: February 5, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Mototaka INOBE, Motokazu YAMADA, Kazuhiro KAMADA
  • Publication number: 20150001564
    Abstract: Provided is a light emitting device in which deterioration of the substrate member can be reduced. The light emitting device includes a base member mainly made of a resin, a plurality of wiring portions and arranged on the base member via an adhesive agent, a groove portion defined between adjacent wiring portions, and at least one light emitting element which is disposed straddling at least a part of the groove portion. The adhesive agent is applied covering the base member from the groove portion, and contains a light-shielding member. The light-shielding member shields the base member from light, for example at a specific wavelength, emitted from the at least one light emitting element.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Hiroki OGURO, Motokazu YAMADA, Yasuo FUJIKAWA
  • Patent number: 8916903
    Abstract: A light emitting device that includes a substrate, a light emitting element and a sealing resin member. The substrate includes a flexible base, a plurality of wiring portions and a groove portion between the plurality of wiring portions. The flexible base extends in a first direction corresponding to a longitudinal direction of the substrate and the plurality of wiring portions are arranged on the base. The light emitting element is disposed on the substrate and electrically connected to the plurality of wiring portions. The sealing resin member seals the light emitting element and a part of the substrate. The sealing resin member is spaced apart from a first groove portion of the groove portion, the first groove portion extending in a second direction intersecting the first direction.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: December 23, 2014
    Assignee: Nichia Corporation
    Inventors: Motokazu Yamada, Tadaaki Miyata, Naoki Mori
  • Patent number: 8889459
    Abstract: In method of manufacturing a light emitting device, a substrate is provided, and metallization is established on an upper surface of the substrate. A light emitting element is mounted on top of the metallization, and the metallization and light emitting element are electrically connected. The surfaces of metallization and at least side surface of the light emitting element are continuously covered with insulating material. Light reflective resin is provided over the insulating material at a position surrounding the light emitting element to reflect light from the light emitting element.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: November 18, 2014
    Assignee: Nichia Corporation
    Inventors: Mototaka Inobe, Motokazu Yamada, Kazuhiro Kamada
  • Publication number: 20140299974
    Abstract: A semiconductor light emitting device including a substrate, an electrode and a light emitting region is provided. The substrate may have protruding portions formed in a repeating pattern on substantially an entire surface of the substrate while the rest of the surface may be substantially flat. The cross sections of the protruding portions taken along planes orthogonal to the surface of the substrate may be semi-circular in shape. The cross sections of the protruding portions may in alternative be convex in shape. A buffer layer and a GaN layer may be formed on the substrate.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 9, 2014
    Inventors: Isamu NIKI, Motokazu YAMADA, Masahiko SANO, Shuji SHIOJI
  • Publication number: 20140254182
    Abstract: A light emitting device which can prevent bending of the substrate member. The light emitting device includes a flexible substrate member, a plurality of light emitting elements, two first sealing members, and a second sealing member. The two first sealing members are disposed in-line on the substrate member and arranged in the longitudinal direction. The second sealing member is arranged extending in the longitudinal direction on the substrate member, and is offset in a lateral direction from the two first sealing members. The second sealing member is further arranged to extend across a first gap formed between the two first sealing members when viewed from a lateral direction, and overlap at least a portion of each of the two first sealing members. The second sealing member comprises a resin having transparency to light.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Applicant: NICHIA CORPORATION
    Inventor: Motokazu YAMADA
  • Publication number: 20140231835
    Abstract: A stacked assembly of light emitting devices includes a first light emitting device, a second light emitting device and a sealing member. The first light emitting device includes a first substrate member extending in a longitudinal direction and defining a plurality of through-holes, and a plurality of first light emitting elements arranged on the first substrate member. The second light emitting device is arranged to overlap with the first light emitting device. The second light emitting device includes a second substrate member extending in the longitudinal direction, and a plurality of second light emitting elements arranged on the second substrate and exposed respectively through the through-holes. The sealing member seals the first light emitting elements and the second light emitting elements.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 21, 2014
    Applicant: NICHIA CORPORATION
    Inventor: Motokazu YAMADA
  • Patent number: 8796721
    Abstract: A semiconductor light emitting device including a substrate, an electrode and a light emitting region is provided. The substrate may have protruding portions formed in a repeating pattern on substantially an entire surface of the substrate while the rest of the surface may be substantially flat. The cross sections of the protruding portions taken along planes orthogonal to the surface of the substrate may be semi-circular in shape. The cross sections of the protruding portions may in alternative be convex in shape. A buffer layer and a GaN layer may be formed on the substrate.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 5, 2014
    Assignee: Nichia Corporation
    Inventors: Isamu Niki, Motokazu Yamada, Masahiko Sano, Shuji Shioji
  • Publication number: 20140124805
    Abstract: A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element 100 has a light emitting structure of a semiconductor 20 on a first main surface of a substrate 10. The first main surface of the substrate 10 has substrate protrusion portion 11, the bottom surface 14 of each protrusion is wider than the top surface 13 thereof in a cross-section, or the top surface 13 is included in the bottom surface 14 in a top view of the substrate. The bottom surface 14 has an approximately polygonal shape, and the top surface 13 has an approximately circular or polygonal shape with more sides than that of the bottom surface 14.
    Type: Application
    Filed: January 10, 2014
    Publication date: May 8, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Shunsuke MINATO, Junya NARITA, Yohei WAKAI, Yukio NARUKAWA, Motokazu YAMADA
  • Patent number: 8686457
    Abstract: A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element 100 has a light emitting structure of a semiconductor 20 on a first main surface of a substrate 10. The first main surface of the substrate 10 has substrate protrusion portion 11, the bottom surface 14 of each protrusion is wider than the top surface 13 thereof in a cross-section, or the top surface 13 is included in the bottom surface 14 in a top view of the substrate. The bottom surface 14 has an approximately polygonal shape, and the top surface 13 has an approximately circular or polygonal shape with more sides than that of the bottom surface 14.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: April 1, 2014
    Assignee: Nichia Corporation
    Inventors: Shunsuke Minato, Junya Narita, Yohei Wakai, Yukio Narukawa, Motokazu Yamada
  • Publication number: 20140077236
    Abstract: A light emitting device includes a flexible substrate including a flexible base member and a plurality of wiring portions disposed on one surface of the base member, at least one light emitting element arranged on a first surface of the flexible substrate and electrically connected to the respective wiring portions, a sealing resin sealing the light emitting element, and an adhesion layer arranged on a second surface of the flexible substrate. The adhesion layer has a portion corresponding at least to a region on the first surface where the at least one light emitting element is arranged. The portion has a thickness smaller than a thickness of regions other than the portion.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: NICHIA CORPORATION
    Inventor: Motokazu YAMADA
  • Publication number: 20140021506
    Abstract: A light emitting device includes a support member, a light emitting element, and an underfill material. The support member includes an insulating member and positive and negative electrically conductive wirings arranged on the insulating member. The electrically conductive wirings are insulated and separated from each other by an insulating region arranged between the positive and negative electrically conductive wirings. The insulating separation region includes a first region disposed on an outer side with respect to the light emitting element and a second region disposed directly under the light emitting element. The first region includes an underfill arranging portion in which an interval between the electrically conductive wirings is wider than in the second region. The underfill material is arranged to extend from the underfill arranging portion to the second region in a space formed between the support member and the light emitting element.
    Type: Application
    Filed: July 18, 2013
    Publication date: January 23, 2014
    Applicant: NICHIA CORPORATION
    Inventor: Motokazu YAMADA
  • Publication number: 20140008694
    Abstract: A light emitting device that includes a substrate, a light emitting element and a sealing resin member. The substrate includes a flexible base, a plurality of wiring portions and a groove portion between the plurality of wiring portions. The flexible base extends in a first direction corresponding to a longitudinal direction of the substrate and the plurality of wiring portions are arranged on the base. The light emitting element is disposed on the substrate and electrically connected to the plurality of wiring portions. The sealing resin member seals the light emitting element and a part of the substrate. The sealing resin member is spaced apart from a first groove portion of the groove portion, the first groove portion extending in a second direction intersecting the first direction.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 9, 2014
    Inventors: Motokazu YAMADA, Tadaaki MIYATA, Naoki MORI
  • Publication number: 20130257920
    Abstract: A display apparatus includes a first light source, a second light source, a third light source, a first color filter, a second color filter, a third color filter, and an opto-functional device. The first light source and the second light source are allowed to emit light in a first emission time period to form a first display pattern. The third light source is allowed to emit light and the opto-functional device controls the third color filter to transmit light in a second emission time period to form a second display pattern. The first emission time period and the second emission time period are alternately repeated to combine the first display pattern and the second display pattern to obtain an intended display pattern when the display apparatus displays the intended display pattern.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: NICHIA CORPORATION
    Inventor: Motokazu YAMADA
  • Publication number: 20130183496
    Abstract: A semiconductor light emitting device including a substrate, an electrode and a light emitting region is provided. The substrate may have protruding portions formed in a repeating pattern on substantially an entire surface of the substrate while the rest of the surface may be substantially flat. The cross sections of the protruding portions taken along planes orthogonal to the surface of the substrate may be semi-circular in shape. The cross sections of the protruding portions may in alternative be convex in shape. A buffer layer and a GaN layer may be formed on the substrate.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 18, 2013
    Inventors: Isamu NIKI, Motokazu YAMADA, Masahiko SANO, Shuji SHIOJI
  • Patent number: 8415693
    Abstract: The light emitting device has a substrate, metallization including silver established on the surface of the substrate, a light emitting element mounted on the substrate, conducting wire that electrically connects the metallization and the light emitting element, light reflective resin provided on the substrate to reflect light from the light emitting element, and insulating material that covers at least part of the metallization surfaces. The insulating material is established to come in contact with the side of the light emitting element. This arrangement can suppress the leakage of light emitting element light from the substrate, and can achieve a light emitting device with high light extraction efficiency.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 9, 2013
    Assignee: Nichia Corporation
    Inventors: Mototaka Inobe, Motokazu Yamada, Kazuhiro Kamada
  • Patent number: 8394652
    Abstract: A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element 100 has a light emitting structure of a semiconductor 20 on a first main surface of a substrate 10. The first main surface of the substrate 10 has substrate protrusion portion 11, the bottom surface 14 of each protrusion is wider than the top surface 13 thereof in a cross-section, or the top surface 13 is included in the bottom surface 14 in a top view of the substrate. The bottom surface 14 has an approximately polygonal shape, and the top surface 13 has an approximately circular or polygonal shape with more sides than that of the bottom surface 14.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: March 12, 2013
    Assignee: Nichia Corporation
    Inventors: Shunsuke Minato, Junya Narita, Yohei Wakai, Yukio Narukawa, Motokazu Yamada
  • Publication number: 20130037842
    Abstract: A light emitting device (100) includes a base member (101), electrically conductive members (102a, 102b) disposed on the base member (101), a light emitting element (104) mounted on the electrically conductive members (102a, 102b), an insulating filler (114) covering at least a portion of surfaces of the electrically conductive members (102a, 102b) where the light emitting element (104) is not mounted, and a light transmissive member (108) covering the light emitting element (104).
    Type: Application
    Filed: January 28, 2011
    Publication date: February 14, 2013
    Inventors: Motokazu Yamada, Ryota Seno, Kazuhiro Kamada
  • Patent number: 8344403
    Abstract: A semiconductor light emitting device including a substrate, an electrode and a light emitting region is provided. The substrate may have protruding portions formed in a repeating pattern on substantially an entire surface of the substrate while the rest of the surface may be substantially flat. The cross sections of the protruding portions taken along planes orthogonal to the surface of the substrate may be semi-circular in shape. The cross sections of the protruding portions may in alternative be convex in shape. A buffer layer and a GaN layer may be formed on the substrate.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 1, 2013
    Assignee: Nichia Corporation
    Inventors: Isamu Niki, Motokazu Yamada, Masahiko Sano, Shuji Shioji
  • Patent number: 8344402
    Abstract: A semiconductor light emitting device including a substrate, an electrode and a light emitting region is provided. The substrate may have protruding portions formed in a repeating pattern on substantially an entire surface of the substrate while the rest of the surface may be substantially flat. The cross sections of the protruding portions taken along planes orthogonal to the surface of the substrate may be semi-circular in shape. The cross sections of the protruding portions may in alternative be convex in shape. A buffer layer and a GaN layer may be formed on the substrate.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 1, 2013
    Assignee: Nichia Corporation
    Inventors: Isamu Niki, Motokazu Yamada, Masahiko Sano, Shuji Shioji