Patent ID: 6232131
Filing Date: 2001-05-15
Classification: H01L

Abstract:
A method for manufacturing a semiconductor device comprising the steps of:forming a first wiring layer comprising a titanium nitride or a titanium-tungsten layer on a semiconductor substrate on which a capacitor element having a capacitor dielectric film is formed, and the capacitor dielectric film is at least one film selected from the group consisting of a capacitor dielectric film with high dielectric constant and a ferroelectric film;conducting a first annealing on said semiconductor substrate after forming the first wiring layer;forming a second wiring layer on said first wiring layer after the first annealing;etching selectively said first wiring layer and said second wiring layer; andconducting a second annealing on said semiconductor substrate on which the second wiring layer has been formed,wherein the temperature for the first annealing step ranges from 300.degree. C. to 450.degree. C. or rapid thermal annealing is conducted for the first annealing step to anneal at a temperature from 450.degree. C. to 550.degree. C.