Patent ID: 7286958
Filing Date: 2007-10-23
Classification: G01R

Abstract:
1. A method for determining a yield similarity of semiconductor devices, the method comprising: providing a first plurality of semiconductor devices, the first plurality of semiconductor devices sharing at least a first predetermined condition; providing a second plurality of semiconductor devices, the second plurality of semiconductor devices sharing at least a second predetermined condition; determining a first statistical distribution for the first plurality of semiconductor devices, the first statistical distribution being based on at least on a first yield associated with the first plurality of semiconductor devices; determining a second statistical distribution for the second plurality of semiconductor devices, the second statistical distribution being based at least on a second yield associated with the second plurality of semiconductor devices; obtaining a confidence level based at least on an overlap between the first statistical distribution and the second statistical distribution; comparing the confidence level to a predetermined confidence level; and determining a similarity between the first plurality of semiconductors and the second plurality of semiconductors.