Patent ID: 7960228

Claim:
A method for manufacturing a semiconductor device, comprising: forming a first interlayer insulating film over a semiconductor substrate; forming a first conductive film on the first interlayer insulating film; forming a first ferroelectric film on the first conductive film by a film-forming method including at least a film forming step using a sol-gel method; carrying out an annealing on the first ferroelectric film; forming a second ferroelectric film on the first ferroelectric film by a sputtering method after the annealing on the first ferroelectric film; forming a second conductive film on the second ferroelectric film by forming a first conductive metal oxide film crystallized while being formed, by a sputtering method using a sputtering gas containing oxygen; and forming a capacitor including a lower electrode, a capacitor dielectric film and an upper electrode by patterning the first conductive film, the first and second ferroelectric films and the second conductive film, wherein the first ferroelectric film comprises a main ferroelectric film and an auxiliary ferroelectric film on the main ferroelectric film, and wherein the main ferroelectric film is formed by any one of a MOCVD method and a MOD method, and the auxiliary ferroelectric film is formed by a sol-gel method.