Patent ID: 7524709

Claim:
A method for manufacturing a device comprising the steps of: forming a first insulating film over a substrate; forming a first opening in the first insulating film; forming a first conductive film over the first insulating film and in the first opening; forming a second conductive film over the first conductive film and in the first opening so as to fill in the first opening; etching the second conductive film so as to form a conductive layer in the first opening and a first columnar conductive member on a portion of the second conductive film, the portion being located apart from the first opening; forming a third conductive film over the first conductive film, the conductive layer, and the first columnar conductive member, thereby, forming a first projection over the first columnar conductive member; forming a second insulating film over the third conductive film; and forming a fourth conductive film over the second insulating film and the third conductive film so as to be electrically connected to a top surface of the first projection.