Patent ID: 6548349
Filing Date: 2003-04-15
Classification: H01L

Abstract:
A method for fabricating a cylinder-type semiconductor device capacitor comprising:forming in sequence a first insulating layer, a first etch stop layer, a second insulating layer, and a second etch stop layer on a semiconductor substrate including a conductive region; forming a second etch stop layer pattern, a second insulating layer pattern, and a first etch stop layer pattern by etching a portion of the second etch stop layer, the second insulating layer, and the first etch stop layer, to form a storage node hole exposing a surface of a portion of the first insulating layer; forming a spacer on an inner wall of the storage node hole; forming a first insulating layer pattern by etching an exposed potion of the first insulating layer using the second etch stop layer pattern and the spacer as a mask, to form a node contact hole exposing the conductive region; removing the second etch stop layer pattern and the spacer; forming a lower electrode facing the first etch stop layer pattern, the first insulating layer pattern, and the conductive region; and forming a dielectric layer and an upper electrode on the lower electrode.