Patent ID: 8796043
Filing Date: 2014-08-05
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a transistor in a semiconductor substrate; forming a first insulating film on the semiconductor substrate, and the transistor; forming a ferroelectric capacitor on the first insulating film, the ferroelectric capacitor including a lower electrode, a ferroelectric film, and an upper electrode; forming a second insulating film on the first insulating film, and the ferroelectric capacitor; forming an etching stopper film on the second insulating film; forming a first plug, which reaches an impurity region of the transistor, in the etching stopper film, the first insulating film and the second insulating film; forming a third insulating film on the etching stopper film and the first plug; and forming a second plug, which reaches the first plug, in the third insulating film.