Patent ID: 8019457

Claim:
A method of controlling a result parameter of an integrated circuit (IC) manufacturing procedure, wherein the IC manufacturing procedure includes a number “N” of processes correlated with the result parameter, an i-th process includes at least one i-th variable correlated with the result parameter in a correlation equation and having a standard value V i−0 , the variables include two or more different physical quantities and the result parameter has a target value P 0 when each variable has its standard value, comprising: setting j=k (1≦k≦N−1) and setting a predicted accumulative deviation ΔP C of the Result parameter to zero; a) acquiring a value V j−r of a j-th variable of a j-th process; b) calculate a difference ΔV j−r between V j−r and V j−0 ; c) calculating a predicted variation ΔP j of the result parameter from ΔV j−r using a correlation equation of the j-th variable and the result parameter, and adding ΔP j to ΔP C ; d) calculating, from ΔP C , a correcting value ΔV (j+1)−d capable of compensating ΔP C using a correlation equation of a (j+1)-th variable and the result parameter; e) increasing the value of j by one; and repeating the steps a-e for at least one cycle if k is not equal to N−1, and making an end when j is equal to N.