Patent ID: 6965844

Claim:
A method for processing stability 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 a confidence level based on at least information associated with the indicator; processing information associated with the confidence level; determining whether the characteristic is stable based on at least information associated with the confidence level; wherein the confidence level is associated with a second order of the indicator and a first order of the indicator; wherein the determining whether the characteristic is stable includes: if the confidence level is equal to or higher than 95%, determining the characteristic to be stable; if the confidence level is lower than 95%, determining the characteristic to be unstable.