Patent ID: 6419800
Filing Date: 2002-07-16
Classification: C23C,G02B,H01J

Abstract:
A film-forming apparatus comprisinga film-forming substrate conveying device in a vacuum apparatus with an adjustable reduced pressure atmosphere, a pair of magnetron sputtering cathodes located proximally to each other and situated in a straight line in the direction perpendicular to the conveying direction of the substrate, with at least one row situated in the conveying direction of the substrate, a pair of targets situated on said cathodes, a film-forming substrate positioned opposite said targets, and a power source device that alternately reverses the polarity of said pair of cathodes so that when the first of said pair of cathodes is used as a negative electrode the second of said pair of cathodes is used as a positive electrode, and when the second of said pair of cathodes is used as a negative electrode the first of said pair of cathodes is used as a positive electrode, in order to apply a glow discharge-producing voltage to the pair of targets corresponding to each of said pair of cathodes, situated on the surface of each cathode.