Patent ID: 7638022
Filing Date: 2009-12-29
Classification: H01J

Abstract:
1. A magnetron source for producing a magnetic field near a surface of a target in a deposition system, comprising: a first magnet that forms a first rectangular continuous close loop; a second magnet that forms a second rectangular continuous close loop, wherein the first rectangular continuous close loop is substantially parallel to the second rectangular continuous close loop, wherein the second rectangular continuous close loop is separated by a gap from the first rectangular continuous close loop along a first direction that is substantially perpendicular to the first rectangular close loop; one or more target holders configured to hold a first target and a second target in the gap between the first magnet and the second magnet, wherein the first target and the second target comprise sputtering surfaces from which target materials are to be sputtered and deposited on two opposing surfaces of a planar substrate, wherein the one or more target holders are so configured that the sputtering surfaces are substantially parallel to the first direction, and wherein the first magnet and the second magnet are configured to produce a magnetic field near the sputtering surfaces of the first target and the second target; and a transport mechanism configured to move the planar substrate through the first rectangular continuous close loop and the second rectangular continuous close loop to allow different areas of the planar substrate to receive materials sputtered off the target, wherein the transport mechanism is configured to position the opposing surfaces of the planar substrate to be respectively facing to the sputtering surfaces.