Patent ID: 6368754
Filing Date: 2002-04-09
Classification: G03F

Abstract:
A method of fabricating a semiconductor device, comprising the steps of:(a) preparing a reticle having a first area in which a first light blocking portion is formed and in which a first mask portion having a first pattern is formed for forming a first contact hole having a first size, and a second area in which a second light blocking portion is formed and in which a second mask portion having a second pattern is formed for forming a second contact hole having a second size different from said first size; (b) forming a resist film on a wafer; (c) aligning said first mask portion of said first area of said reticle to a first selected portion of said wafer and aligning said first light blocking portion to a second selected portion of said wafer, and exposing said resist film to light passing through said first mask; (d) aligning said second mask portion of said second area of said reticle to the second selected portion of said wafer and aligning said second light blocking portion to said first selected portion of said wafer without developing said resist film, and exposing said resist film to light passing through said second mask; and (e) developing said resist film.