Patent ID: 6755945
Filing Date: 2004-06-29
Classification: C23C,H01J,H01L

Abstract:
An iPVD process comprising:sealing a substrate within a chamber of an IPVD apparatus and, without opening the chamber: inductively coupling a high density plasma into a space within the chamber to produce ions of coating material for deposit onto the substrate during deposition modes and to produce ions for etching the substrate during etch modes, and performing an iPVD process to deposit a conductive layer on surfaces of high aspect ratio submicron features on the substrate by operating the apparatus in a deposition mode, followed by an etch mode, followed by another deposition mode; and the modes being affected by controlling the apparatus to operate at power and pressure parameters that are different during the deposition modes than during the etch mode, including operating the apparatus at a first processing pressure in a deposition mode, then lowering the pressure to operate the apparatus at a second processing pressure in an etch mode, then raising the pressure to operate again at the first processing pressure in a subsequent deposition mode.