Patent ID: 6319737
Filing Date: 2001-11-20
Classification: G01R,H01L

Abstract:
A computer-readable medium carrying one or more sequences of instructions for generating characterization data for a fabrication process in which semiconductor devices are formed upon at least one wafer, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of: receiving a first data set containing measured results obtained from tests performed on the semiconductor devices during the fabrication process;receiving a second data set containing values corresponding to design characteristics for the semiconductor devices;comparing the measured results from the first data set to the design characteristics from the second data set;identifying semiconductor devices having valid and invalid performance characteristics, based on the step of comparing; andgenerating the characterization data for the fabrication process based on the identified valid semiconductor devices;whereby the characterization data includes proposed limit parameters to which test results from said semiconductor devices will conform.