Patent ID: 8557699
Filing Date: 2013-10-15
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising the steps of: forming an insulating film over an upper surface of a substrate; forming a transistor over the insulating film, the transistor including a source region and a drain region; forming an interlayer insulating film over the transistor, the interlayer insulating film covering the transistor; forming a first opening in the interlayer insulating film to reach one of the source region and the drain region of the transistor; forming a first conductive film over the interlayer insulating film and in the first opening; forming a second opening through the interlayer insulating film, and at least part of a thickness of the substrate, in a different position than that of the first opening; forming concurrently a conductive material in the second opening and on and in contact with a top surface of the interlayer insulating film, an extension of the conductive material being in contact with the first conductive film; and thinning the substrate from a back surface of the substrate so as to expose a bottom portion of the conductive material in the second opening.