Patent ID: 6290826
Filing Date: 2001-09-18
Classification: C23C,H01J

Abstract:
A sputtering apparatus comprising:a vacuum housing;a cathode holder disposed in said vacuum housing;a substrate holder in confronting relation to each of said targets; anda plurality of shields each disposed between adjacent ones of said targets,each of said targets being positioned asymmetrically around a center of said cathode holder,said shields having tip ends spaced from a surface of said target by a distance which is at least a diameter of said target, andsaid cathode holder and said substrate holder being rotated relatively to each other,wherein each of said targets has a radius which is greater than the distance between an arc of a concentric circle one of said targets has its center thereon and another arc of an adjacent one when concentric circles having a center of a relative rotation on said cathode holder as their centers and circumferences thereof pass through respective centers of said targets.