Patent ID: 9099541
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: forming a through via hole in a substrate; forming an insulating film liner covering a sidewall of the through via hole; forming a through via plug filling the through via hole; exposing a bottom surface and a part of a sidewall of the insulating film liner by removing a lower portion of the substrate such that a bottom surface of the substrate is formed; removing portions of the insulating film liner on a bottom surface and a sidewall of the through via plug so as to expose a part of the sidewall of the through via hole; forming an antipollution film to cover the bottom surface of the substrate, and the bottom surface and the sidewall of the through via plug, the antipollution film being on the exposed part of the sidewall of the through via hole; forming an auxiliary insulating film on the antipollution film; and removing a part of the antipollution film and exposing the bottom surface of the through via plug by performing a planarization process, wherein after the planarization process, an exposed surface of the auxiliary insulating film, an exposed protrusion of the antipollution film, and an exposed surface of the through via plug are horizontally aligned.