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).

  • Publication number: 20080303045
    Abstract: A semiconductor light emitting device includes a semiconductor light emitting element, a lead electrically connected to the semiconductor light emitting element, and a resin package covering the semiconductor light emitting element and part of the lead. The resin package includes a lens facing the semiconductor light emitting element. The lead includes an exposed portion that is not covered by the resin package. The exposed portion includes a first portion and a second portion, where the first portion has a first mount surface oriented backward along the optical axis of the lens, and the second portion has a second mount surface oriented perpendicularly to the optical axis of the lens.
    Type: Application
    Filed: April 8, 2008
    Publication date: December 11, 2008
    Applicant: ROHM CO., LTD.
    Inventors: Yasunori Hata, Masahiko Kobayakawa
  • Patent number: 7456494
    Abstract: A surface mount electronic component includes a set of a first lead terminal 2a and a second lead terminal 3b, a semiconductor element 6a die-bonded to an island portion 4a integrally formed at an end of the first lead terminal, a metal wire 7a electrically connecting the semiconductor element and a bonding portion 5b integrally formed at an end of the second lead terminal to each other, and a package 8 made of synthetic resin and hermetically sealing the island portion and the bonding portion. The island portion and the bonding portion are formed by plastic deformation of a portion of each of the lead terminals to be positioned within the package from a lower surface side to reduce the thickness and increase the width.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: November 25, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20080237627
    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: March 28, 2008
    Publication date: October 2, 2008
    Applicant: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20080210065
    Abstract: A method for cutting a lead terminal of a packaged electronic component including a resin package (5), an element (2) covered by the package (5), and a lead terminal (3) connected to the element (2) and including a protruding portion extending out of the package (5). The method includes the steps of forming a narrow bridge portion (23) at the lead terminal (3) by removing a part of the protruding portion, providing a metal plate to the protruding portion of the lead terminal (3), and cutting the lead terminal (3) at the narrow bridge portion (23).
    Type: Application
    Filed: January 18, 2006
    Publication date: September 4, 2008
    Applicant: ROHM CO., LTD.
    Inventors: Masahiro Noda, Masahiko Kobayakawa, Tadatoshi Miwa
  • Publication number: 20080191328
    Abstract: A surface mount electronic component includes a set of a first lead terminal 2a and a second lead terminal 3b, a semiconductor element 6a die-bonded to an island portion 4a integrally formed at an end of the first lead terminal, a metal wire 7a electrically connecting the semiconductor element and a bonding portion 5b integrally formed at an end of the second lead terminal to each other, and a package 8 made of synthetic resin and hermetically sealing the island portion and the bonding portion. The island portion and the bonding portion are formed by plastic deformation of a portion of each of the lead terminals to be positioned within the package from a lower surface side to reduce the thickness and increase the width.
    Type: Application
    Filed: May 12, 2005
    Publication date: August 14, 2008
    Applicant: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Patent number: 7364947
    Abstract: In an electronic component comprising a semiconductor chip packaged in a molded part from which the lead terminals of the semiconductor chip project, a main cutting notch is formed on the obverse surface of each lead terminal before molding the molded part while leaving unnotched portions adjoining both ends of the main notch. Then, each lead terminal is cut at the main notch after molding the molded part, thereby making fewer and smaller cutting burrs occurring at the cut faces.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: April 29, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20070247821
    Abstract: The electric component includes at least a set of electrode terminals 2, 3, a semiconductor element 4 electrically connected with the set of electrode terminals, and a package 6 made of synthetic resin and sealing the electrode terminals and the semiconductor element with part of a lower surface of each of the electrode terminals exposed at a lower surface of the package. A cover layer 11 made of synthetic resin is formed to cover a cut surface of a tip of a connector lead remainder extending integrally outward from the each of the electrode terminals. Thus, disadvantages resulting from exposure of the cut surface of the tip of the connector lead remainder are eliminated.
    Type: Application
    Filed: May 12, 2005
    Publication date: October 25, 2007
    Applicant: ROHM CO., LTD.
    Inventors: Masahiko Kobayakawa, Masahide Maeda
  • Patent number: 7238549
    Abstract: A semiconductor device X1 comprises: a first conductor 110 including a first terminal surface 113a; a second conductor 120 placed by the first conductor 110 and including a second terminal surface 123a facing a same direction as does the first terminal surface 113a; a third conductor 130 connected with the first conductor 110; a semiconductor chip 140 including a first surface 141 and a second surface 142 away from the first surface, and bonded to the first conductor 110 and to the second conductor 120 via the second surface 142; and a resin package 150. The first surface 141 of the semiconductor chip 140 is provided with a first electrode electrically connected with the first conductor 110 via the third conductor 130. The second surface 142 is provided with a second electrode electrically connected directly with the second conductor 120.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 3, 2007
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20060141672
    Abstract: In an electronic component comprising a semiconductor chip packaged in a molded part from which the lead terminals of the semiconductor chip project, a main cutting notch is formed on the obverse surface of each lead terminal before molding the molded part while leaving unnotched portions adjoining both ends of the main notch. Then, each lead terminal is cut at the main notch after molding the molded part, thereby making fewer and smaller cutting burrs occurring at the cut faces.
    Type: Application
    Filed: October 17, 2003
    Publication date: June 29, 2006
    Applicant: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Publication number: 20060043613
    Abstract: A semiconductor device X1 comprises: a first conductor 110 including a first terminal surface113a; a second conductor 120 placed by the first conductor 110 and including a second terminal surface 123a facing a same direction as does the first terminal surface 113a; a third conductor 130 connected with the first conductor 110; a semiconductor chip 140 including a first surface 141 and a second surface 142 away from the first surface, and bonded to the first conductor 110 and to the second conductor 120 via the second surface 142; and a resin package 150. The first surface 141 of the semiconductor chip 140 is provided with a first electrode electrically connected with the first conductor 110 via the third conductor 130. The second surface 142 is provided with a second electrode electrically connected directly with the second conductor 120.
    Type: Application
    Filed: October 21, 2005
    Publication date: March 2, 2006
    Applicant: ROHM CO., LTD.
    Inventor: Masahiko Kobayakawa
  • Patent number: 6989585
    Abstract: A semiconductor device X1 comprises: a first conductor 110 including a first terminal surface 113a; a second conductor 120 placed by the first conductor 110 and including a second terminal surface 123a facing a same direction as does the first terminal surface 113a; a third conductor 130 connected with the first conductor 110; a semiconductor chip 140 including a first surface 141 and a second surface 142 away from the first surface, and bonded to the first conductor 110 and to the second conductor 120 via the second surface 142; and a resin package 150. The first surface 141 of the semiconductor chip 140 is provided with a first electrode electrically connected with the first conductor 110 via the third conductor 130. The second surface 142 is provided with a second electrode electrically connected directly with the second conductor 120.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: January 24, 2006
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: 6913950
    Abstract: A semiconductor device includes an insulating substrate, a cutout formed in side surfaces of the substrate, a conductive pad formed on the obverse surface of the substrate, an electrode formed on the reverse surface of the substrate, a semiconductor chip mounted on the substrate, and a connector which connects the pad to the electrode. The connector is arranged in the cutout.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: July 5, 2005
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: 6794736
    Abstract: A semiconductor device includes a semiconductor chip, a plurality of conductors electrically connected to the semiconductor chip, and a resin package for sealing the semiconductor chip and the conductors. Each of the conductors has a thicker portion and a thinner portion. The thicker portion includes a lower surface exposed at a bottom surface of the resin package as a terminal for surface-mounting. The thicker portion of at least one of the conductors is non-rectangular with partially or entirely uneven width.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: September 21, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D573554
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: July 22, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D576572
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: September 9, 2008
    Assignee: Rohm Co., Ltd.
    Inventors: Yasunori Hata, Masahiko Kobayakawa
  • Patent number: D576573
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: September 9, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D576574
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: September 9, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D578084
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: October 7, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D578969
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: October 21, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa
  • Patent number: D580892
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: November 18, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Masahiko Kobayakawa