Patent ID: 6033986
Filing Date: 2000-03-07
Classification: H01L,Y10S

Abstract:
A method for manufacturing a semiconductor device comprising the steps of:sequentially depositing a barrier metal film, aluminum alloy film and TiN film over an insulating deposited on a semiconductor substrate;coating a resist film on the TiN film and patterning the resist film by a photolithography technique;etching the TiN film, aluminum alloy film and barrier metal film with the resist film used as a mask to form interconnect lines;removing an overhanging portion of the TiN film relative to an uppermost portion of the aluminum alloy film, while leaving the TiN film formed on a remaining portion of the aluminum alloy film; anddepositing an insulating film to bury the TiN film, aluminum alloy film and barrier metal film therewith.