Patent ID: 8241980
Filing Date: 2012-08-14
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising: forming an element layer on a semiconductor substrate; forming a first inter-layer insulating film on the element layer; forming a ferroelectric capacitor layer on the first inter-layer insulating film; forming a protective-stopper film on the ferroelectric capacitor layer; forming a second inter-layer insulating film on the protective-stopper film; forming a resist pattern of a hole on the second inter-layer insulating film; forming the hole by etching the second inter-layer insulating film with an etching condition in which the forming the hole is to be stopped at the protective-stopper film; removing the protective-stopper film under the hole; and extending the hole down to the element layer by etching the first inter-layer insulating film.