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System and method for current-enhanced stress-migration testing of interconnect

Image Number 4 for United States Patent #6867056.

For testing for stress-migration failure of interconnect, an interconnect test structure is formed with a first feeder line coupled to a test line by a first no-flux structure, and with a second feeder line coupled to the test line by a second no-flux structure. A respective width of ea ch of the first and second feeder lines is greater than a width of the test line. A resistance meter and a timer measure a stress-migration life-time of the interconnect test structure with a current being continuously conducted through the interconnect test structure that is continuously heated to a predetermined temperature.

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