Patent ID: 6156632
Filing Date: 2000-12-05
Classification: H01L

Abstract:
A method of forming a polycide structure, the method comprising the steps of:forming a polysilicon layer on a surface;forming an oxide hard mask over the polysilicon layer resulting in exposed portions of the polysilicon layer and unexposed portions of the polysilicon layer;depositing a metal silicide layer over the oxide hard mask and the exposed portions of the polysilicon layer;annealing the metal silicide layer and the polysilicon layer resulting in a silicide region of the polycide structure over the exposed portions of the polysilicon layer and a region of the silicide layer over the oxide hard mask;removing both the region of the silicide layer over at least the oxide hard mask and the oxide hard mask; andremoving the unexposed portions of the polysilicon layer resulting in the polycide structure.