Patents Represented by Attorney, Agent or Law Firm Hoffman, Warnick & D'Alessando LLC
  • Multiple chip guard rings for integrated circuit and chip guard ring interconnect
    Patent number: 6744112
    Abstract: An integrated circuit having structure for isolating circuit sections having at least one differing characteristic. The structure includes a chip guard ring for each circuit section having the at least one differing characteristic. Providing multiple chip guard rings allows for isolation of circuit sections and prevention of ionic contamination, but without increased expense and size. In addition, it is practicable with any IC. The invention also may include an interconnect for electrical connectivity about a chip guard ring.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: June 1, 2004
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey B. Johnson, Alvin J. Joseph, Parker A. Robinson, Raminderpal Singh, Dennis Whittaker