Patent ID: 7109540
Filing Date: 2006-09-19
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming a groove having at least one tapered side in an insulation film; forming a lower electrode material film on the insulation film and in the groove; forming a ferroelectric material film on the lower electrode material film on the insulation film and within the groove; forming an upper electrode material film on the ferroelectric material film, on the insulation film and within the groove; forming an upper electrode and a ferroelectric material film of a capacitive element within the groove by removing the upper electrode material film and the ferroelectric material film from the insulation film and leaving the upper electrode material film and the ferroelectric material film within the groove by chemical-mechanical polishing the insulation film and the groove, wherein at least a part of the lower electrode material film on the insulation film is left continuous from the groove to form the lower electrode of the capacitor element.