Patent ID: 6156172
Filing Date: 2000-12-05
Classification: C23C,H01J

Abstract:
A facing target sputtering apparatus for producing a film on a substrate comprising:a closed vacuum vessel supplied therein with sputtering gas;at least a pair of targets arranged so as to be spaced apart from one another within said closed vacuum vessel, each target of said pair of targets having a sputtering surface facing the sputtering surface of the other target of said pair of targets;holding means for holding said pair of targets;means for applying an electric power to said pair of targets to cause sputtering from the sputtering surface of each target of said pair of targets;permanent magnets, arranged around each target of said pair of targets, generating at least a perpendicular magnetic field extending in a direction perpendicular to said sputtering surfaces to confine plasma in a space between said sputtering surfaces;unit means for containing said permanent magnets, said holding means, and a cooling jacket, each target of said pair of targets being held on a front surface of said unit means by said holding means, said cooling jacket being formed by a cooling ditch in said unit means adjacent to a backside plane of each target of said pair of targets, said permanent magnets being installed in a cooling block cooled by said cooling jacket from a back side of said unit means and sealed from air, and being separated from said cooling jacket and separated from an inside space of said closed vacuum vessel, wherein said unit means is made of a machined material, has thermal conductivity and is mounted on outside wall-planes of said closed vacuum vessel; andmeans for holding the substrate at a position in a space in said closed vacuum vessel between said sputtering surfaces of said pair of targets.