Patent ID: 6569606
Filing Date: 2003-05-27
Classification: G03F,H01L

Abstract:
A method of forming a photoresist mask for angled implant processes, comprising:forming a structure above a semiconducting substrate; forming a layer of photoresist above said structure and said substrate, said layer of photoresist having a surface; positioning said substrate in a photolithography tool, said tool having a light source and a focal plane; intentionally positioning said surface of said layer of photoresist in an exposure plane that is different from said focal plane of said tool; exposing at least a portion of said layer of photoresist to said light source while said surface of said layer of photoresist is in said exposure plane; developing said layer of photoresist to define an opening in the layer of photoresist around said structure; and performing an angled implant process through said opening in said layer of photoresist using at least one of an N-type and P-type dopant material.