Patent ID: 7859665
Filing Date: 2010-12-28
Classification: G03F,G06F,Y02P

Abstract:
1. A polarization analyzing system comprising: a data collector configured to collect an information on resist patterns formed over step patterns disposed on wafers by first and second lights, respectively, the resist patterns being perpendicular to the step patterns, the first and second lights being polarized parallel and perpendicular to the step patterns, respectively; a residual resist analyzer configured to obtain first and second relations between a ratio of a space to a line width of the resist patterns and first and second residual resists on the wafers, respectively, the first and second residual resists remaining at orthogonal points of the step patterns and the resist patterns formed by the first and second lights, respectively; and a direction chooser configured to choose an optimum polarization direction reducing residual resists by comparing the first and second relations.