Patents by Inventor Christine M. Bunke

Christine M. Bunke 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: 7612371
    Abstract: The present invention addresses detection of charge-induced defects through test structures that can be easily incorporated on a wafer to detect charge-induced damage in the back-end-of-line processing of a semiconductor processing line. A test macro is designed to induce an arc from a charge accumulating antenna structure to another charge accumulating antenna structure across parallel plate electrodes. When an arc of a predetermined sufficient strength is present, the macro will experience a voltage breakdown that is measurable as a short. The parallel plate electrodes may both be at the floating potential of the microchip to monitor CMP-induced or lithographic-induced charge failure mechanisms, or have one electrode electrically connected to a ground potential structure to capture charge induced damage, hence having the capability to differentiate between the two.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: November 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Ishtiaq Ahsan, Christine M. Bunke, Stephen E. Greco