Patent ID: 6627056
Filing Date: 2003-09-30
Classification: H01J,H01L

Abstract:
An ionized metal plasma physical vapor deposition system chamber, comprising:a vacuum chamber housing comprising: a sputtering target; a substrate support member for supporting a wafer, wherein the substrate support member is connected to a first power source; a coil disposed for providing an electromagnetic field to the chamber, wherein the coil is disposed between the sputtering target and the substrate support member, and wherein the coil is connected to a second power source; an inert gas inlet port disposed proximate the sputtering target and the coil, wherein the inert gas inlet port is configured to create a higher partial pressure of inert gas proximate the sputtering target than at an upper surface of the wafer; an active gas inlet port disposed proximate the substrate support member, wherein the active gas inlet port is configured to create a higher partial pressure of active gas proximate the upper surface of the wafer than at the sputtering target; a shield support member; a shield ring held in a first position by the shield support member and held in a second position by the substrate support member; and a gap created between the shield ring and the shield support member when the shield ring is in the second position, wherein the gap provides a path for the active gas to flow from the active gas inlet port to the upper surface of the wafer.