Patents by Inventor Masahiko Kobayakawa

Masahiko Kobayakawa 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: 9755125
    Abstract: An LED module is provided with a lead, an LED chip mounted on the obverse surface of the lead, and a case covering at least a part of the lead. The case has a side wall surrounding the LED chip. The lead includes a thin extension whose bottom surface is spaced apart upward from the reverse surface of the lead in the thickness direction of the lead. The case is provided with a holding portion that covers at least a part of each of the top surface and the bottom surface of the first thin extension.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: September 5, 2017
    Assignee: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Patent number: 9748448
    Abstract: An LED module A1 is provided with: a first lead 1 including a die-bonding portion 12 with a mount surface 12a, and a front-end sunk portion 14; a second lead 2 including a wire-bonding portion 22 and spaced apart from the first lead 1; an LED chip 3 mounted on the mount surface 12a and provided with a first electrode terminal 31 and a second electrode terminal 32; a wire 61 connecting the second electrode terminal 32 and the wire-bonding portion 22; and a support member 4 including a protective portion 42 and supporting the leads 1 and 2. The protective portion covers the front-end sunk portion 14 with the mount surface 12a exposed, and includes an inclined portion 42a that becomes thinner as proceeding from the die-bonding portion 12 toward the lead 2.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: August 29, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Naoyuki Kizu
  • Publication number: 20170229616
    Abstract: A light-emitting apparatus includes a light-emitting, a first lead, a second lead, and a resin molded body configured to support the first lead and the second lead. The main surfaces of the first and second leads includes first and second coverage areas covered by the resin molded body and first and second exposure regions exposed from the resin molded body at a window portion of the resin molded body, respectively. First and second metal layers are provided to cover main surfaces of the first and second leads at first and second exposure regions, respectively.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 10, 2017
    Inventors: Tomoichiro TOYAMA, Masahiko KOBAYAKAWA
  • Publication number: 20170221864
    Abstract: An LED module includes: a substrate including main, rear, and bottom surfaces; a first light emitting element disposed on the main surface; a conductive layer formed on the substrate and electrically coupled with the first light emitting element; a first conductive bonding layer interposed between the first light emitting element and the conductive layer; a main surface insulating film formed on the main surface and covering a portion of the conductive layer; and a first wire, wherein the main surface and the rear surface face opposite directions, the bottom surface connects long sides of the main and rear surfaces, the conductive layer includes a first wire bonding portion where the first wire is bonded, and the main surface insulating film includes a first insulating portion including a portion interposed between the first light emitting element and the first wire bonding portion when viewed in a thickness direction of the substrate.
    Type: Application
    Filed: April 19, 2017
    Publication date: August 3, 2017
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9722157
    Abstract: An LED module according to the present invention includes an LED unit 2 and a case 1, where the LED unit includes an LED chip 21, and the case 1 includes a main body 11 made of a ceramic material and a pad 12a on which the LED unit 2 is mounted. The outer edge 121a of the pad 12a is positioned inward of the outer edge 2a of the LED unit 2 as viewed in plan. These arrangements prevent the light emission amount of the LED module A1 from reducing with time.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: August 1, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Tomoichiro Toyama
  • Publication number: 20170194543
    Abstract: A LED module includes a substrate, a LED chip supported on the substrate, a metal wiring installed on the substrate, the metal wiring including a mounting portion on which the LED chip is mounted, an encapsulating resin configured to cover the LED chip and the metal wiring, and a clad member configured to cover the metal wiring to expose the mounting portion, the encapsulating resin arranged to cover the clad member.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9698128
    Abstract: An LED module includes a substrate having a main surface and a rear surface located opposite the main surface, a main surface electrode located on the main surface, a plurality of penetration electrodes connected to the main surface electrode and extending through the substrate, three or more LED chips arranged on the main surface electrode along a first direction, and a case arranged on the main surface to surround the main surface electrode. The LED chips include at least one LED chip that can emit red light, at least one LED chip that can emit green light and at least one LED chip that can emit blue light.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: July 4, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Takashi Moriguchi, Masahiko Kobayakawa
  • Publication number: 20170186735
    Abstract: An LED module includes a substrate, one or more LED chips supported by a main surface of the substrate, and wirings. The substrate has one or more through holes penetrating from the main surface to a rear surface. The wirings are formed on the substrate and make electrical conduction with the LED chips. The wirings include pads which are formed on the main surface and make electrical conduction with the LED chips, rear surface electrodes which are formed on the rear surface, and through wirings which make electrical conduction between the pads and the rear surface electrodes and are formed on the inner sides of the through holes.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 29, 2017
    Inventors: Masahiko KOBAYAKAWA, Takashi MORIGUCHI
  • Publication number: 20170186930
    Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.
    Type: Application
    Filed: March 13, 2017
    Publication date: June 29, 2017
    Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA
  • Publication number: 20170170374
    Abstract: An LED module 100 includes LED chips 21, 22 spaced apart from each other, and an LED chip 23 offset from a straight line connecting the LED chips 21 and 22 and located between the LED chips 21, 22 in the direction in which the LED chips 21, 22 are spaced. The module further includes a lead 31 with a bonding portion 31a and a mounting terminal surface 31d, a lead 32 with a bonding portion 32a and a mounting terminal surface 32d, and a lead 33 with a bonding portion 33a and a mounting terminal surface 33d. The mounting terminal surfaces 31d, 32d, 33d are flush with each other. Light from the LED chips 21, 22, 23 is emitted in the direction in which the mounting terminal surfaces 31d, 32d and 33d extend. Thus, light of different colors properly mixed can be emitted from a compact LED module.
    Type: Application
    Filed: February 17, 2017
    Publication date: June 15, 2017
    Inventors: Masahiko KOBAYAKAWA, Hidekazu TODA
  • Patent number: 9673361
    Abstract: A light-emitting apparatus includes a light-emitting, a first lead, a second lead, and a resin molded body configured to support the first lead and the second lead. The main surfaces of the first and second leads includes first and second coverage areas covered by the resin molded body and first and second exposure regions exposed from the resin molded body at a window portion of the resin molded body, respectively. First and second metal layers are provided to cover main surfaces of the first and second leads at first and second exposure regions, respectively.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 6, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Tomoichiro Toyama, Masahiko Kobayakawa
  • Patent number: 9659913
    Abstract: An LED module includes: a substrate including main, rear, and bottom surfaces; a first light emitting element disposed on the main surface; a conductive layer formed on the substrate and electrically coupled with the first light emitting element; a first conductive bonding layer interposed between the first light emitting element and the conductive layer; a main surface insulating film formed on the main surface and covering a portion of the conductive layer; and a first wire, wherein the main surface and the rear surface face opposite directions, the bottom surface connects long sides of the main and rear surfaces, the conductive layer includes a first wire bonding portion where the first wire is bonded, and the main surface insulating film includes a first insulating portion including a portion interposed between the first light emitting element and the first wire bonding portion when viewed in a thickness direction of the substrate.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: May 23, 2017
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: 9640744
    Abstract: A LED module includes a substrate, a LED chip supported on the substrate, a metal wiring installed on the substrate, the metal wiring including a mounting portion on which the LED chip is mounted, an encapsulating resin configured to cover the LED chip and the metal wiring, and a clad member configured to cover the metal wiring to expose the mounting portion, the encapsulating resin arranged to cover the clad member.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: May 2, 2017
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: 9634212
    Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: April 25, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
  • Publication number: 20170104137
    Abstract: A method is provided for making optical semiconductor devices collectively. LED chips are arranged on a material substrate, and the substrate is sandwiched by a common mold and a first cooperating mold formed with a cavity. A light-transmitting resin is injected into the cavity and solidified to form a light-transmitting resin member including body portions for sealing the LED chips and connecting portions each connecting adjacent body portions. Then, the substrate is sandwiched by the common mold and a second cooperating mold formed with another cavity. A light-shielding resin is injected into the cavity and solidified to form a light-shielding resin member filling the gaps between the body portions. The body portions are separated from each other by making cuts in the material substrate and the light-shielding resin member.
    Type: Application
    Filed: September 20, 2016
    Publication date: April 13, 2017
    Inventor: Masahiko KOBAYAKAWA
  • Publication number: 20170098642
    Abstract: A compact LED module and a method of manufacturing such an LED module are provided. The LED module includes a first-pole first lead, a first-pole second lead, a first-pole third lead, a second-pole first lead, a second-pole second lead, a second-pole third lead, a first LED chip, a second LED chip, a third LED chip, and a housing. A distal end of the first-pole first lead is offset toward a second-pole side in a first direction with respect to both a distal end of the second-pole second lead and a distal end of the second-pole third lead.
    Type: Application
    Filed: December 14, 2016
    Publication date: April 6, 2017
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9613935
    Abstract: An LED module includes a substrate, one or more LED chips supported by a main surface of the substrate, and wirings. The substrate has one or more through holes penetrating from the main surface to a rear surface. The wirings are formed on the substrate and make electrical conduction with the LED chips. The wirings include pads which are formed on the main surface and make electrical conduction with the LED chips, rear surface electrodes which are formed on the rear surface, and through wirings which make electrical conduction between the pads and the rear surface electrodes and are formed on the inner sides of the through holes.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: April 4, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Masahiko Kobayakawa, Takashi Moriguchi
  • Patent number: 9613937
    Abstract: An LED module 100 includes LED chips 21, 22 spaced apart from each other, and an LED chip 23 offset from a straight line connecting the LED chips 21 and 22 and located between the LED chips 21, 22 in the direction in which the LED chips 21, 22 are spaced. The module further includes a lead 31 with a bonding portion 31a and a mounting terminal surface 31d, a lead 32 with a bonding portion 32a and a mounting terminal surface 32d, and a lead 33 with a bonding portion 33a and a mounting terminal surface 33d. The mounting terminal surfaces 31d, 32d, 33d are flush with each other. Light from the LED chips 21, 22, 23 is emitted in the direction in which the mounting terminal surfaces 31d, 32d and 33d extend. Thus, light of different colors properly mixed can be emitted from a compact LED module.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: April 4, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Hidekazu Toda
  • Publication number: 20170084811
    Abstract: An LED (Light Emitting Diode) module includes an LED unit having one or more LED chips and a case. The case includes: a body including a base plate made of ceramic, the base plate having a main surface and a bottom surface opposite to the main surface; a through conductor penetrating through the base plate; and one or more pads formed on the main surface and making conductive connection with the through conductor, the pads mounting thereon the LED unit. The through conductor includes a main surface exposed portion exposed to the main surface and overlapping the LED unit when viewed from top, a bottom surface reaching portion connected to the main surface exposed portion and reaching the bottom surface. The pads cover at least a portion of the main surface exposed portion.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Inventors: Masahiko KOBAYAKAWA, Shinji ISOKAWA, Riki SHIMABUKURO
  • Patent number: 9553077
    Abstract: A compact LED module and a method of manufacturing such an LED module are provided. The LED module includes a first-pole first lead, a first-pole second lead, a first-pole third lead, a second-pole first lead, a second-pole second lead, a second-pole third lead, a first LED chip, a second LED chip, a third LED chip, and a housing. A distal end of the first-pole first lead is offset toward a second-pole side in a first direction with respect to both a distal end of the second-pole second lead and a distal end of the second-pole third lead.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: January 24, 2017
    Assignee: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa