Patent ID: 6436251
Filing Date: 2002-08-20
Classification: C23C,H01J,H01L

Abstract:
A magnetron plasma sputter reactor, comprising:a plasma chamber arranged about a central axis and configured to accommodate a substrate to be sputter coated; a target arranged around said central axis and having at least one annular vault disposed on a first side of said target facing said substrate, said vault having an inner sidewall, an outer sidewall, and a roof, said target being configured to receive electrical power to create a plasma within said plasma chamber; a first magnetron system producing a first magnetic field distribution that is substantially uniform along a circumference of said vault about said central axis, wherein said first magnetron system comprises: at least one first magnet disposed behind said inner sidewall; and second magnets disposed behind said outer sidewall; and a second magnetron system producing at any one time a second magnetic field distribution in a localized area along said circumference of said vault and being rotatable along said circumference.