Patent ID: 7319938

Claim:
A method for determining commonality of semiconductor devices, the method comprising: providing a first plurality of semiconductor devices; providing a second plurality of semiconductor devices; obtaining a first plurality of measured values corresponding to a characteristic associated with the first plurality of semiconductor devices; obtaining a second plurality of measured values corresponding to the characteristic associated with the second plurality of semiconductor devices performing a first statistical analysis for the first plurality of measured values; determining a first statistical distribution based on at least information associated with the first statistical analysis; performing a second statistical analysis for the second plurality of measured values; determining a second statistical distribution based on at least information associated with the second statistical analysis; processing information associated with the first statistical distribution and the second statistical distribution; determining an indicator based on at least information associated with the first statistical distribution and the second statistical distribution, the indicator being associated with an overlapping area between the first statistical distribution and the second statistical distribution; processing information associated with the indicator; determining whether there is a commonality associated with the first plurality of semiconductor devices and the second plurality of semiconductor devices based on at least information associated with the indicator.