Patent ID: 7891537
Filing Date: 2011-02-22
Classification: B23K,C23C,H01J

Abstract:
1. A method for forming a solder bonded sputter target/backing plate assembly comprising the steps of: a) forming a backing plate with a bonding surface having at least two spaced-apart peripheral flange segments and a spacer element disposed on the inner walls of the flange segments and the peripheral edge of the bonding surface of the backing plate; said spacer elements having a height equivalent to the thickness of the height of the intended solder bond; b) forming a sputter target having a sputter surface and a bonding surface and having a size to accommodate the spaced apart flange segments; c) applying a solder material to the interface spacing defined by superimposing and aligning said sputter target between the flange segments onto the spacer element; d) allowing said solder material to solidify and bond the sputter target to the backing plate; and e) removing said flange segments from the backing plate.