Patent ID: 6670262
Filing Date: 2003-12-30
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:(a) forming a first film on a semiconductor substrate, said first film being electrically conductive; (b) forming a second film on said first film; (c) forming a first photoresist on said second film; (d) exposing said first photoresist to light using a first photomask having a first pattern; (e) developing said first photoresist exposed in said step (d); (f) patterning said second film using said first photoresist developed in said step (e) to form a third film over a region in which a gate electrode is to be formed, said third film being wider than a gate width of said gate electrode; (g) forming a second photoresist on said first film to cover said third film, said step (h) being executed after said step (f); (h) exposing said second photoresist to light using a second photomask having a second pattern defining an end of said gate electrode as seen in a direction of said gate width; (i) developing said second photoresist exposed in said step (h); (j) patterning said third film using said second photoresist developed in said step (i) to form a fourth film; and (k) etching said first film using said fourth film as an etch mask to form said gate electrode.