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: 9548287
    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: Grant
    Filed: December 1, 2014
    Date of Patent: January 17, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Masahiko Kobayakawa, Shinji Isokawa, Riki Shimabukuro
  • Patent number: 9502618
    Abstract: An LED module includes: an LED chip; and a resin case having a reflective surface surrounding the LED chip. An area contact inhibitor to inhibit area contact with an adjacent LED module is formed on an outer surface of the resin case.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: November 22, 2016
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20160300990
    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: May 31, 2016
    Publication date: October 13, 2016
    Inventor: Masahiko KOBAYAKAWA
  • Publication number: 20160284678
    Abstract: An LED package includes: a substrate having a loading surface, a mounting surface and a pair of concave portions formed at both ends of the substrate, wherein each of the concave portions has an inner surface intersecting both of the loading surface and the mounting surface; metal wirings including a pair of electrodes, which covers a portion of the loading surface and the mounting surface and the inner surface, and a conductive part disposed on the loading surface; an LED chip loaded on the conductive part; a housing having a side wall surrounding the LED chip and a supporting surface facing the loading surface; and a covering member which is disposed on the loading surface and has a closing portion overlapping at least a portion of the concave portions when viewed from above, wherein at least a portion of the supporting surface is fixed to the closing portion.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 29, 2016
    Inventors: Masahiko KOBAYAKAWA, Riki SHIMABUKURO
  • Patent number: 9379295
    Abstract: A method for manufacturing an LED module is provided that includes the steps of mounting an LED chip 2 on an obverse surface of leads 1A?, 1B?, and after the step of mounting the LED chip 2, providing a case 6 that covers part of the leads 1A?, 1B? and includes a reflective surface 61 surrounding the LED chip 2 in an in-plane direction of the leads 1A?, 1B?. With this arrangement, there is no risk that the arm for handling the LED chip 2 interferes with the case 6. This allows the distance between the reflective surface 61 and the LED chip 2 to be reduced, and hence allows making the LED module more compact.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 28, 2016
    Assignee: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Patent number: 9379290
    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: March 5, 2015
    Date of Patent: June 28, 2016
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20160172563
    Abstract: A lead 1 includes a die-bonding portion 11 with an opening 11a penetrating in a thickness direction. Another lead 2 is spaced from the lead 1. An LED unit 3 includes an LED chip 30 with a electrode terminal 31 connected to the lead 1 and another electrode terminal 32 connected to the lead 2. The LED unit 3, mounted on a surface of the die-bonding portion 11 on a first side in z direction, overlaps the opening 11a. A wire 52 connects the lead 2 and the electrode terminal 32. A support member 4 supporting the leads 1-2 is held in contact with another surface of the die-bonding portion 11 on a second side in z direction. These arrangements ensure efficient heat dissipation from the LED chip 30 and efficient use of light emitted from the LED chip 3.
    Type: Application
    Filed: February 24, 2016
    Publication date: June 16, 2016
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9312462
    Abstract: A lead 1 includes a die-bonding portion 11 with an opening 11a penetrating in a thickness direction. Another lead 2 is spaced from the lead 1. An LED unit 3 includes an LED chip 30 with a electrode terminal 31 connected to the lead 1 and another electrode terminal 32 connected to the lead 2. The LED unit 3, mounted on a surface of the die-bonding portion 11 on a first side in z direction, overlaps the opening 11a. A wire 52 connects the lead 2 and the electrode terminal 32. A support member 4 supporting the leads 1-2 is held in contact with another surface of the die-bonding portion 11 on a second side in z direction. These arrangements ensure efficient heat dissipation from the LED chip 30 and efficient use of light emitted from the LED chip 3.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: April 12, 2016
    Assignee: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20150348949
    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: May 22, 2015
    Publication date: December 3, 2015
    Inventor: Masahiko KOBAYAKAWA
  • Publication number: 20150311184
    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: July 7, 2015
    Publication date: October 29, 2015
    Inventors: Masahiko KOBAYAKAWA, Hidekazu TODA
  • Publication number: 20150236218
    Abstract: An LED module includes: an LED chip; and a resin case having a reflective surface surrounding the LED chip. An area contact inhibitor to inhibit area contact with an adjacent LED module is formed on an outer surface of the resin case.
    Type: Application
    Filed: May 6, 2015
    Publication date: August 20, 2015
    Inventor: Masahiko KOBAYAKAWA
  • Publication number: 20150235996
    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: May 4, 2015
    Publication date: August 20, 2015
    Inventors: Masahiko KOBAYAKAWA, Takashi MORIGUCHI
  • Publication number: 20150236231
    Abstract: A semiconductor light-emitting device includes a lead frame, a semiconductor light-emitting element mounted on the top surface of the bonding region, and a case covering part of the lead frame. The bottom surface of the bonding region is exposed to the outside of the case. The lead frame includes a thin extension extending from the bonding region and having a top surface which is flush with the top surface of the bonding region. The thin extension has a bottom surface which is offset from the bottom surface of the bonding region toward the top surface of the bonding region.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9093294
    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: April 27, 2011
    Date of Patent: July 28, 2015
    Assignee: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Hidekazu Toda
  • Publication number: 20150179898
    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 5, 2015
    Publication date: June 25, 2015
    Inventor: Masahiko KOBAYAKAWA
  • Patent number: 9059387
    Abstract: A semiconductor light-emitting device includes a lead frame, a semiconductor light-emitting element mounted on the top surface of the bonding region, and a case covering part of the lead frame. The bottom surface of the bonding region is exposed to the outside of the case. The lead frame includes a thin extension extending from the bonding region and having a top surface which is flush with the top surface of the bonding region. The thin extension has a bottom surface which is offset from the bottom surface of the bonding region toward the top surface of the bonding region.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: June 16, 2015
    Assignee: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Patent number: 9041016
    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: February 9, 2012
    Date of Patent: May 26, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Masahiko Kobayakawa, Takashi Moriguchi
  • Publication number: 20150129908
    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 1, 2014
    Publication date: May 14, 2015
    Inventors: Masahiko KOBAYAKAWA, Shinji ISOKAWA, Riki SHIMABUKURO
  • Patent number: 9030096
    Abstract: An LED module includes: an LED chip; and a resin case having a reflective surface surrounding the LED chip. An area contact inhibitor to inhibit area contact with an adjacent LED module is formed on an outer surface of the resin case.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 12, 2015
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20150091044
    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: December 8, 2014
    Publication date: April 2, 2015
    Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA