Patent ID: 6511916
Filing Date: 2003-01-28
Classification: G03F,H01L

Abstract:
A method for removing a photoresist layer is used to form a damascene structure, wherein said damascene structure has a first dielectric layer thereon, an etching stop layer on said first dielectric layer, and a second dielectric layer on said etching stop layer, the method comprising:forming a first photoresist layer on said second dielectric layer and exposing a first pattern area on said second dielectric layer; performing a first etching process by way of using said first photoresist layer as an etching mask to etch through said second dielectric layer, said etching stop layer and said first dielectric layer until said semiconductor substrate, so as to form a first trench, and forming a first polymer layer on said first photoresist layer after finishing said first etching process; performing a first removing process to strip said first polymer layer on said first photoresist layer; performing a second removing process to strip said first photoresist layer; forming a second photoresist layer on said second dielectric layer and exposing a second pattern area on said second dielectric layer and said first trench; performing a second etching process by way of using said second photoresist layer as an etching mask and said etching stop layer as an etching terminated point to etch said second dielectric layer until said etching stop layer, so as to form a second trench, and forming a second polymer layer on said second photoresist layer after finishing said second etching process; performing said first removing process to strip said second polymer layer on said second photoresist layer; and performing said second removing process to strip said second photoresist layer.