Patent ID: 7427458

Claim:
A method of forming a feature comprising: receiving a semiconductor substrate having a first layer; forming a mask of a first material on the first layer, wherein forming the mask includes forming a mask layer on the first layer and forming at least one opening in the mask layer, the at least one opening in the mask layer having an incorrect profile of at least one side of the opening or a bottom of the opening; correcting the profile of the at least one side of the opening or a bottom of the opening in the mask layer including at least one of: removing a bottom portion of at least one side of the at least one opening in the mask layer such that the at least one side is substantially perpendicular to top surface of the mask layer; or adding a second portion material to at least one side of the opening in the mask layer such that the at least one side of the opening is substantial perpendicular to a top surface of the mask layer; and forming a feature in the first layer.