Patent ID: 6887722

Claim:
A method for exposing a semiconductor wafer by adjusting exposure parameters of an exposure tool and projecting a pattern of a matrix configuration of exposure fields on the semiconductor wafer, the method which comprises: in a first step, dividing the matrix configuration of exposure fields into at least two areas, providing a plurality of sets of exposure parameters including a dose and a focus of the exposure tool, and correlating each of the areas with a different one of the plurality of sets of exposure parameters; in a second step, exposing each one of the exposure fields using a respective one of the plurality of sets of exposure parameters correlated with a respective one of the areas associated with the one of the exposure fields; performing the first step and the second step on the semiconductor wafer, which has been coated with a passivation layer and a resist configured on the passivation layer; and providing each one of the plurality of sets of exposure parameters in accordance with a property of the passivation layer underlying the resist.