Patent ID: 7741215
Filing Date: 2010-06-22
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising forming a hole penetrating an insulating film over a semiconductor substrate, wherein the method comprises the steps of: forming a pedestal at a position where a hole to be formed, said pedestal being formed by patterning a non-silicon-containing film using silicon oxide as a mask, said pedestal comprising a non-silicon-containing pattern composed of an organic material or a carbon-containing material; forming an insulating film to bury the pedestal; forming a first hole in the insulating film so as to expose a top surface of the pedestal, the first hole having a first cross section at which the top surface of the pedestal is exposed; and completely removing the pedestal to form a second hole continuous with the first hole to form a hole penetrating the insulating film, the second hole having a second cross section at which the second hole is continuous with the first hole, the first cross-section being smaller than the second hole.