Patent ID: 7560333

Claim:
A method of forming a capacitor comprising: forming a polysilicon layer over a semiconductor substrate; forming a capacitor dielectric layer over the polysilicon layer; forming a metal layer over the capacitor dielectric layer; forming an insulating layer over the capacitor dielectric layer; forming a first contact hole in the insulating layer, wherein the metal is formed in the first contact hole; and forming a second contact hole in the insulating layer and the capacitor dielectric layer, wherein the second contact hole is in a different region than the first contact hole, wherein the first contact hole and a portion of the second contact hole in the insulating layer are formed at substantially the same time, wherein a portion of the second contact hole in the capacitor dielectric layer is formed after forming the second contact hole through the insulating layer, wherein an etching mask is formed over the first contact hole before forming the portion of the second contact hole in the capacitor dielectric layer, and wherein the etching mask is removed after forming the portion of the second contact hole in the capacitor dielectric layer.