Patent ID: 6444570
Filing Date: 2002-09-03
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:selectively forming a wiring; forming a first interlayer film on the wiring; forming a first antireflection film on the first interlayer film; forming a first resist film on the first antireflection film; patterning the first resist film, followed by removing the first antireflection film and the first interlayer film with the patterned first resist film used as a mask so as to form a contact hole exposing a portion of the top surface of the wiring to the outside; removing the first resist film; forming a second antireflection film so as to cover at least the bottom surface of the contact hole; forming a second resist film on the second antireflection film; patterning the second resist film to permit the second resist film to remain over the contact hole; removing the second antireflection film with the patterned second resist film used as a mask so as to expose a portion of the top surface of the first interlayer film to the outside; forming a second interlayer film so as to cover the patterned second resist film and the second antireflection film; removing the second interlayer film so as to expose at least the entire top surface of the patterned second resist film to the outside; and removing the patterned second resist film and the second antireflection film so as to form a groove in the second interlayer film.