Patent ID: 6159843
Filing Date: 2000-12-12
Classification: H01L

Abstract:
A method of fabricating a landing pad, comprising:providing a substrate comprising a gate electrode thereon, wherein the gate electrode has a top surface covered by a cap layer and a spacer covers a sidewall of the gate electrode and the cap layer;forming a polysilicon layer over the substrate wherein the polysilicon layer has a recess region with respect to an opening between the gate electrode, and a bottom surface of the recess region is higher than a height of the cap layer;performing an isotropic chemical dry etch on the polysilicon layer to at least expose the cap layer and a portion of the spacer, wherein the polysilicon layer on the recess region is etched by an etching rate less than that on a region other than the recess region; andpatterning the polysilicon layer to form landing pads in contact with the substrate.