Patents by Inventor Yasushige Sakamoto

Yasushige Sakamoto 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).

  • Semiconductor device with copper wire ball-bonded to electrode pad including buffer layer
    Patent number: 8692370
    Abstract: A semiconductor element (10) is secured to an island (7), and a plurality of through-holes (8) are formed in the portion of the island (7), which surrounds the area to which the semiconductor element (10) is secured. Further, the electrode pads of the semiconductor element (10) and leads (4) are electrically connected by copper wires (11). In this structure, the cost of materials is reduced by using the copper wires (11) in comparison with gold wires. Further, a part of a resin package (2) is embedded in through-holes (8), so that the island (7) can be easily supported within the resin package (2).
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: April 8, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Takashi Kitazawa, Yasushige Sakamoto, Motoaki Wakui
  • SEMICONDUCTOR DEVICE AND METHOD FOR PRODUCING THE SAME
    Publication number: 20110304046
    Abstract: A semiconductor element (10) is secured to an island (7), and a plurality of through-holes (8) are formed in the portion of the island (7), which surrounds the area to which the semiconductor element (10) is secured. Further, the electrode pads of the semiconductor element (10) and leads (4) are electrically connected by copper wires (11). In this structure, the cost of materials is reduced by using the copper wires (11) in comparison with gold wires. Further, a part of a resin package (2) is embedded in through-holes (8), so that the island (7) can be easily supported within the resin package (2).
    Type: Application
    Filed: February 25, 2010
    Publication date: December 15, 2011
    Applicants: ON SEMICONDUCTOR TRADING, LTD. a Bermuda limited company, ON SEMICONDUCTOR TRADING, LTD. a Bermuda limited company, ON SEMICONDUCTOR TRADING, LTD. a Bermuda limited liablity company
    Inventors: Takashi Kitazawa, Yasushige Sakamoto, Motoaki Wakui