Patents Assigned to SJM Technologies
  • Patent number: 6354479
    Abstract: Dissipative ceramic bonding tips for wire bonding electrical connections to bonding pads on integrated circuits chips and packages are disclosed. In accordance with the principles of the present invention, to avoid damaging delicate electronic devices by any electrostatic discharge, an ultrasonic bonding wedge tool tip must conduct electricity at a rate sufficient to prevent charge buildup, but not at so high a rate as to overload the device being bonded. For best results, a resistance in the tip assembly itself should range from 105 to 1012 ohms. In addition, the wedges must also have specific mechanical properties to function satisfactorily.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: March 12, 2002
    Assignee: SJM Technologies
    Inventors: Steven Frederick Reiber, Mary Louise Reiber