Patents by Inventor Peng Cheong Choe

Peng Cheong Choe 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: 7392924
    Abstract: An automated ball mounting system is disclosed In which solder balls are tested by heating the solder balls to a temperature between the eutectic temperature of lead-tin and the melting temperature of a lead free solder ball. If the heated solder balls melt they are standard solder balls. If they do not melt they are lead free solder balls. Solder balls that are input into the automated ball mounting process are automatically tested to determine solder ball type. When the test indicates that the wrong type of solder ball is being used an error message is indicated and the solder ball mounting process stops.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: July 1, 2008
    Assignee: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe, Tic Medina
  • Patent number: 7390122
    Abstract: An automated ball mounting process is disclosed in which solder balls are tested by heating the solder balls to a temperature between the eutectic temperature of lead-tin and the melting temperature of a lead free solder ball. If the heated solder balls melt they are standard solder balls. If they do not melt they are lead free solder balls. Solder balls that are input into the automated ball mounting process are automatically tested to determine solder ball type. When the test indicates that the wrong type of solder ball is being used an error message is indicated and the solder ball mounting process stops.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 24, 2008
    Assignee: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe, Tic Medina
  • Patent number: 6720786
    Abstract: An integral system for testing integrated circuits (ICs) mounted on an assembly strip after lead formation and before separation from the assembly strip. The ICs are arranged in rows and columns on each assembly strip such that the sides of each IC are connected to leads extending from the assembly strip, and the ends of each IC are held by the assembly strip. The strips are loaded into the system and passed to a first station at which leads are cut and formed while the ends of each IC remain connected to the assembly strip. The assembly strips are then passed to a test apparatus that transmits test signals to the ICs through the formed leads. The IC devices are then separated from the assembly strip using a singulation apparatus, and the separated ICs are stored in tubes for delivery. Visual inspection is also performed at various stages.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: April 13, 2004
    Assignee: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe
  • Patent number: 6521468
    Abstract: A method for testing integrated circuits (ICs) mounted on an assembly strip after lead formation and before separation from the assembly strip. The ICs are arranged in rows and columns on each assembly strip such that the sides of each IC are connected to leads extending from the assembly strip, and the ends of each IC are held by the assembly strip. The strips are loaded into the system and passed to a first station at which leads are cut and formed while the ends of each IC remain connected to the assembly strip. The assembly strips are then passed to a test apparatus that transmits test signals to the ICs through the formed leads. The IC devices are then separated from the assembly strip using a singulation apparatus, and the separated ICs are stored in tubes for delivery. Visual inspection is also performed at various stages.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: February 18, 2003
    Assignee: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe
  • Publication number: 20030022405
    Abstract: A method for testing integrated circuits (ICs) mounted on an assembly strip after lead formation and before separation from the assembly strip. The ICs are arranged in rows and columns on each assembly strip such that the sides of each IC are connected to leads extending from the assembly strip, and the ends of each IC are held by the assembly strip. The strips are loaded into the system and passed to a first station at which leads are cut and formed while the ends of each IC remain connected to the assembly strip. The assembly strips are then passed to a test apparatus that transmits test signals to the ICs through the formed leads. The IC devices are then separated from the assembly strip using a singulation apparatus, and the separated ICs are stored in tubes for delivery. Visual inspection is also performed at various stages.
    Type: Application
    Filed: September 12, 2001
    Publication date: January 30, 2003
    Applicant: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe
  • Publication number: 20030020509
    Abstract: An integral system for testing integrated circuits (ICs) mounted on an assembly strip after lead formation and before separation from the assembly strip. The ICs are arranged in rows and columns on each assembly strip such that the sides of each IC are connected to leads extending from the assembly strip, and the ends of each IC are held by the assembly strip. The strips are loaded into the system and passed to a first station at which leads are cut and formed while the ends of each IC remain connected to the assembly strip. The assembly strips are then passed to a test apparatus that transmits test signals to the ICs through the formed leads. The IC devices are then separated from the assembly strip using a singulation apparatus, and the separated ICs are stored in tubes for delivery. Visual inspection is also performed at various stages.
    Type: Application
    Filed: September 12, 2001
    Publication date: January 30, 2003
    Applicant: Integrated Device Technology, Inc.
    Inventors: Kong Lam Song, Peng Cheong Choe