Patent ID: 6649449
Filing Date: 2003-11-18
Classification: C23C,H01J,H01L

Abstract:
A method of forming a PVD target/backing plate assembly, comprising:forming a bonding layer on a surface of the PVD target and forming a strong diffusion bond between the bonding layer and the target in less than or equal to about 24 hours at a temperature of less than or equal to about 500Â° C.; the forming the bonding layer comprising coating the bonding layer onto the surface by ion deposition; the strong diffusion bond forming during the ion deposition; forming a passivating layer on the bonding layer; forming a layer of solder on the passivating layer; and joining a backing plate to the target, the joining the backing plate to the target comprising bonding the backing plate with the solder, the backing plate being joined through a connection that includes at least the bonding layer and accordingly being separated from the PVD target surface by at least the bonding layer.