Patent ID: 7736970
Filing Date: 2010-06-15
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: forming a first insulating layer on a semiconductor substrate; forming a first hole in the first insulating layer; forming a contact plug in the first hole; forming a second insulating layer comprising a landing pad, wherein the landing pad contacts an upper surface of the contact plug; forming an etch stop layer on the landing pad and the second insulating layer; forming a third insulating layer on the etch stop layer; forming a third hole through the third insulating layer and etch stop layer to expose the landing pad, wherein at least a portion of a bottom surface of the third hole is lower than the lower surface of the etch stop layer; forming a lower electrode on the landing pad; and forming a capacitor by forming a dielectric layer and an upper electrode on the lower electrode.