Patent ID: 6071390
Filing Date: 2000-06-06
Classification: C23C,H01J,H01L

Abstract:
A sputtering apparatus comprising:a vacuum vessel having an exhaust system;a cathode which is disposed in said vacuum vessel and has a target on a front face thereof; anda substrate holder which is used for disposing a substrate so as to be coaxial with and oppose said target in parallel, so that a film is deposited on an inner face of a hole formed in a surface of the substrate,wherein said target of said cathode has a size D.sub.t which is determined based on relationships that Q.sub.1 =N*Q.sub.2 and that N is not smaller than 0.7 and not larger than 1.2 are established between a maximum incident angle Q.sub.1 satisfying tan Q.sub.1 =(D.sub.t -D.sub.s)/2L, and an angle Q.sub.2 satisfying tan Q.sub.2 =A/B.sub.42where Q.sub.1 is a maximum incident angle formed by a line connecting a point on a peripheral edge of the target and a point on a peripheral side of the substrate, and Q.sub.2 is formed by a line connecting an inner corner portion of a bottom face of the hole and an opposite point on an opening edge of the hole with respect to a depth direction of the hole, A indicates a diameter of an opening of the hole in which the film is to be deposited, B indicates the depth of the hole, D.sub.s indicates a predetermined size of the substrate, and L indicates a distance between said target and the substrate, andwherein said size D.sub.t of said target is not smaller than 400 mm.