Patent ID: 9715997
Date: 2017-07-25
CPC Classifications: C23C,H01J

Claim:
1. A sputtering method, comprising: providing power to at least one pair of a plurality of pairs of cylindrical target units, each of the cylindrical target units being spaced apart from one another and arranged facing one another; and providing a sputtering gas in a region between the plurality of pairs of cylindrical target units, wherein the plurality of pairs of cylindrical target units is disposed in a chamber configured to support a substrate therein, wherein each of the plurality of pairs of cylindrical target units is positioned at a same side of the substrate as one another, the plurality of pairs of cylindrical target units comprising a first pair of cylindrical target units overlapping a second pair of cylindrical target units in a direction normal to the same side of the substrate, and wherein the provision of power causes, at least in part, each pair of cylindrical target units to comprise a first cylindrical target unit functioning as an anode electrode and a second cylindrical target unit functioning as a cathode electrode.