Patents by Inventor Hun Kil Cho

Hun Kil Cho 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).

  • Pattern recognition method
    Patent number: 6990226
    Abstract: A method includes setting lead eye boxes and lead eye points on a gate and a support bar of a lead frame, before clamping the lead frame, and determining whether or not the lead frame is seated in an exact first position. The lead eye boxes and the lead eye points are again set on the gate and the support bar, after clamping the lead frame, and it is redetermined whether or not the lead frame is seated in the exact first position. The positions of leads of the lead frame are captured and memorized. Die eye boxes and die eye points are set on specific patterns of a die and it is determined whether or not the die is mounted in an exact second position.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: January 24, 2006
    Assignee: Amkor Technology, Inc.
    Inventors: Song Hak Kim, Hun Kil Cho
  • Clamp for pattern recognition
    Patent number: 6984879
    Abstract: A lead frame such as a normal or inverted lead frame includes an unsymmetrical part such as a gate. A clamp, for clamping the lead frame during wire bonding, includes an observation hole. The unsymmetrical part of the lead frame is visible through the observation hole. A lead eye box and a lead eye point are set on the unsymmetrical part through the observation hole. The picture inside the lead eye box is captured and compared to a control picture. Setting the lead eye box and the lead eye point on the unsymmetrical part through the observation hole allows detection of when the lead frame is inadvertently rotated at prescribed angles or when a normal lead frame and an inverted lead frame are inadvertently mixed.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: January 10, 2006
    Assignee: Amkor Technology, Inc.
    Inventors: Song Hak Kim, Hun Kil Cho
  • Clamp for pattern recognition
    Publication number: 20010053244
    Abstract: A lead frame such as a normal or inverted lead frame includes an unsymmetrical part such as a gate. A clamp, for clamping the lead frame during wire bonding, includes an observation hole. The unsymmetrical part of the lead frame is visible through the observation hole. A lead eye box and a lead eye point are set on the unsymmetrical part through the observation hole. The picture inside the lead eye box is captured and compared to a control picture. Setting the lead eye box and the lead eye point on the unsymmetrical part through the observation hole allows detection of when the lead frame is inadvertently rotated at prescribed angles or when a normal lead frame and an inverted lead frame are inadvertently mixed.
    Type: Application
    Filed: January 10, 2001
    Publication date: December 20, 2001
    Applicant: Amkor Technology, Inc.
    Inventors: Song Hak Kim, Hun Kil Cho
  • Pattern recognition method
    Publication number: 20010051000
    Abstract: A method includes setting lead eye boxes and lead eye points on a gate and a support bar of a lead frame, before clamping the lead frame, and determining whether or not the lead frame is seated in an exact first position. The lead eye boxes and the lead eye points are again set on the gate and the support bar, after clamping the lead frame, and it is redetermined whether or not the lead frame is seated in the exact first position. The positions of leads of the lead frame are captured and memorized. Die eye boxes and die eye points are set on specific patterns of a die and it is determined whether or not the die is mounted in an exact second position.
    Type: Application
    Filed: January 10, 2001
    Publication date: December 13, 2001
    Applicant: Amkor Technology, Inc.
    Inventors: Song Hak Kim, Hun Kil Cho