Patent ID: 9683285
Date: 2017-06-20
CPC Classifications: C23C,H01J

Claim:
1. A physical vapor deposition apparatus comprising: a cathode having a first side and a second side, the cathode being configured to generate a plasma; a substrate holder having a first side and a second side, the first side of the substrate holder being configured to hold a substrate, the second side of the cathode facing the first side of the substrate holder, the second side of the cathode including a surface from which material of the cathode is vaporized and ionized, the substrate including a surface onto which the material is deposited; a magnet arrangement operable to guide the plasma, the magnet arrangement consisting of: a first permanent magnet disposed proximate to and facing the first side of the cathode, the first permanent magnet not being disposed between the cathode and the substrate holder, the first permanent magnet being a single magnet, and a second permanent magnet disposed proximate to and facing the second side of the substrate holder, the second permanent magnet not being disposed between the cathode and the substrate holder, a magnetic field being generated by and existing between the first permanent magnet and the second permanent magnet, the second permanent magnet being a single magnet; and a structure disposed between the second side of the cathode and the first side of the substrate holder, the structure consisting of a planar sheet of material, the structure blocking straight paths between the cathode and the substrate, the structure being positioned at a first position proximate a minimum of a strength of the magnetic field between the first permanent magnet and the second permanent magnet, a flow of the plasma substantially following the magnetic field, and the flow of the plasma passing around the structure at the first position.