Patent ID: 7024334

Claim:
A method for yield similarity 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 yields associated with a first yield related to the first plurality of semiconductor devices; obtaining a second plurality of yields associated with a second yield related to the second plurality of semiconductor devices; performing a first statistical analysis for the first plurality of yields; 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 yields; 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 first yield and the second yield are similar 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 first yield and the second yield are similar includes: if the confidence level is equal to or higher than 95%, determining the first yield and the second yield to be similar; if the confidence level is lower than 95%, determining the first yield and the second yield to be not similar.