Patent ID: 6958293

Claim:
A method for manufacturing a semiconductor device that includes a ferroelectric capacitor provided at an intersection of a lower electrode layer extending in a first direction and an upper electrode layer extending in a second direction, the method comprising: depositing a lower electrode layer forming film on a semiconductor substrate; depositing a lower electrode layer forming mask on the lower electrode layer forming film; forming the lower electrode layer extending in the first direction by processing the lower electrode layer forming film with the lower electrode layer forming mask; forming an insulating layer on the semiconductor substrate where the lower electrode layer has been formed in the presence of the lower electrode layer forming mask; exposing an upper surface of the lower electrode layer forming mask by performing a planarization on the insulating layer; removing the lower electrode layer forming mask that has been exposed so as to leave the insulating layer; and depositing a ferroelectric layer forming film and an upper electrode layer forming film in this order on the insulating layer where the lower electrode layer forming mask has been removed.