Patent ID: 6740212
Filing Date: 2004-05-25
Classification: C23C,H01J

Abstract:
A rectangular magnetron sputtering cathode for coating a substrate by means of sputtering in a vacuum chamber; said cathode including a Cooling Plate that separates the cathode into an upper part and a lower part; said Cooling Plate having a front surface, a body, and a back surface; said upper part comprising a Center Pole, two Side Poles, two End Poles, and Target; said Center Pole, Side Poles, and End Poles being made from magnetically permeable materials; said Target having a front surface, a body, and a back surface; said Target comprising two linear sections and two end sections; said lower part including a Bottom Plate, two Bottom Poles, two End Shunts, a Center Magnet, two Bottom Magnets, two Side Magnets, two Inner Magnets, two Out Magnets and two Out Concentrators; said Bottom Plate, Bottom Poles, Out Concentrators, and End Shunts being made from magnetically permeable materials; said Center Magnet, Inner Magnets, and Out Magnets being positioned on said Bottom Plate and having a north-south magnetic orientation perpendicular to the surface of said Bottom Plate; said Bottom Magnets being positioned between said Bottom Plate and said Bottom Poles and having a north-south magnetic orientation that is parallel to the surface plane of said Bottom Plate and is substantially perpendicular to the magnetic orientation of said Center Magnet; said Side Magnets being positioned on said Bottom Poles and having a north-south magnetic orientation perpendicular to the surface of said bottom plate; said Center Magnet, Bottom Magnets, Side Magnets, Inner Magnets, and Out Magnets generating a uniform and continuous magnetic field in a plane containing the surface of said Target with the aid of said Bottom Plate, Bottom Poles, Side Poles, Center Pole, Out Concentrators, and End Shunts.