Monte Carlo simulation of charging effects in linewidth metrology: II. On insulator substrate

Charging effect have been investigated quantitatively using Monte Carlo simulation when the linewidth of PMMA insulator patterns on SiO 2 insulator substrate is measured by scanning electron microscope. We set reference operating and shape conditions for array pattern and calculated the offset on linewidth metrology according to change of each condition. We have used 50 percent threshold algorithm for the edge determination and calculated the offsets in those conditions. And we compare with the result with the case of Si substrate and finally we discussed which facto is most sensitive in linewidth metrology.