A method is disclosed for measuring alignment of polysilicon shapes
relative to a silicon area wherein the presence of an electrical coupling
is used to determine the presence of bias or misalignment. Bridging
vertices on the polysilicon shapes are formed. Bridging vertices over the
silicon area create low resistance connections between those bridging
vertices and the silicon area; other bridging vertices over ROX (recessed
oxide) areas do not create low resistance connections between those other
bridging vertices and the silicon area. Determining which bridging
vertices have low resistance connections to the silicon area and how many
bridging vertices have low resistance connections to the silicon area are
used to determine the bias and misalignment of the polysilicon shapes
relative to the silicon area.