Patent ID: 6423653
Filing Date: 2002-07-23
Classification: H01L

Abstract:
A method for producing gap filling inter-layer dielectric depositions upon a topographic substrate by high density plasma chemical vapor deposition (HDP-CVD) applied in such a manner as to produce said deposition with a reduction of plasma deposition induced damage comprising:providing said topographic substrate; forming upon said topographic substrate a blanket dielectric gap filling layer of thickness between 9000 Ã¥ and 12,000 Ã¥, by a plasma enhanced simultaneous bias sputtering and deposition method applied within the substrate processing chamber of a plasma processing device equipped with top and side source coils capable of supplying RF power to the plasma and an electrostatic chuck for holding the substrate in place and supplying to said substrate an electrostatic bias for the deposition; and transferring power to the plasma within the chamber in a series of steps further comprising: a substrate heating step, during which step top and side coil RF power to the plasma processing chamber is reduced from a first top/side coil RF power level to a second top/side coil RF power level; followed by an inter-layer gap filling dielectric deposition step, during which step top and side coil RF power levels are maintained at a constant third level range until a desired value of said dielectric deposition thickness is achieved; followed by a release and lift step of said substrate during which step all RF power to the top and side RF coils is turned off.