Patent ID: 7683651
Filing Date: 2010-03-23
Classification: G01R

Abstract:
1. A test structure for electromigration analysis, the test structure comprising: a plurality of arrays, each array including a plurality of multilink test sets, each multilink test set including a plurality of metal lines positioned within a dielectric material and connected in a serial configuration, wherein each array includes N number of metal lines wired in the serial configuration in each multilink test set and M number of the multilink test sets connected in the parallel configuration, and each array having different M/N combinations to allow failure data collection corresponding to different failure rate ranges, and wherein a number of parallel arrangements for each M/N combination multilink test structure is in the range 1 to 100; and each multilink test set being connected in a parallel configuration with the other multilink test sets, the parallel configuration including a first electrical connection to a cathode end of a first metal line in each multilink test set and a second electrical connection to an anode end of a last metal line in each multilink test set.