Patent ID: 7589015

Claim:
A method of forming semiconductor device comprising: forming a gate electrode over a semiconductor substrate; forming a first impurity region on one side of said gate electrode; forming a second impurity region on the opposite side of said gate electrode; forming an interconnection layer over said first impurity region; forming a continuous silicon oxide layer; forming a first anti-reflective coating layer over substantially the entire upper surface of said semiconductor substrate wherein said first anti-reflective coating layer is formed of a material selected from the group consisting of silicon oxides, silicon nitrides and silicon oxy-nitrides; forming a layer which is transparent to light over said first anti-reflective coating layer wherein the transparent layer includes a material selected from the group consisting of BPSG, PSG and TEOS; forming a photosensitive film layer over said first anti-reflective coating layer; forming a mask layer over said photosensitive film layer that is used to define a contact hole formed in said semiconductor device; and exposing said photosensitive film layer and said mask layer to a wavelength of light, wherein said step of exposing forms a contact hole through said layers to expose said second impurity region.