Patent ID: 6413864
Filing Date: 2002-07-02
Classification: H01L

Abstract:
A method of manufacturing a copper metal wiring in a semiconductor device, comprising the steps of:forming an interlayer insulating film on a semiconductor substrate in which an underlying structure is formed; forming a damascene pattern having a contact hole and a trench by patterning a given region of said interlayer insulating film; forming a diffusion barrier layer on the structure including said damascene pattern; forming a seed layer on said diffusion barrier layer; forming a chemical enhancer layer on said seed layer by performing a chemical enhancer treatment; performing a spin rinsing process and a warm annealing process whereby said chemical enhancer layer remains only at said contact hole of said damascene pattern; forming a first copper layer on the structure in which said chemical enhancer layer remains; forming a second copper layer on said first copper layer; annealing said first and second layers; and forming a copper metal wiring within said damascene pattern.