Patent ID: 6592728
Filing Date: 2003-07-15
Classification: C23C,G11B,H01J

Abstract:
A physical-vapor deposition apparatus for depositing material from a target onto a substrate, the apparatus comprising:a deposition chamber; a target assembly housed within the chamber holding a target from which a sputter deposition flux is generated; a substrate holder housed within the chamber substantially facing the target assembly; a physical collimator between the target assembly and the substrate holder for spatially filtering of the angular distribution of sputter deposition flux impinging on the substrate; and a long-throw collimator disposed between the physical collimator and the target assembly and defining a predetermined long-throw distance therebetween to provide, in combination with the physical collimator, a collimated deposition of material onto the substrate, wherein the long-throw distance results in a reduced quantity of the sputter deposition flux generated from the target assembly being deposited on the physical collimator, wherein said physical collimator comprises a perforated plate having a predetermined pattern of holes.