Patent ID: 6039848
Filing Date: 2000-03-21
Classification: C23C,H01J

Abstract:
A magnetron sputtering system for ultra-high-vacuum processing to sputter a material from a target onto a substrate contained within a vacuum chamber, comprising;a magnet array assembly;a magnet array chamber formed such that the magnet array chamber encloses the magnet array assembly;a backing plate assembly forming a portion of the magnet array chamber on a first side and forming a portion of the vacuum chamber on a side opposite the first side, the backing plate assembly further comprising;a backing plate;an extender ring coupled to the vacuum chamber walls at the periphery of the extender ring;an insulated spacer ring coupled between the backing plate and the extender ring to electrically isolate the backing plate from walls of the vacuum chamber;a first bond between the insulated spacer ring and the backing plate to hermetically seal the insulated spacer ring to the backing plate and form a vacuum seal between the insulated spacer ring and the backing plate; anda second bond between the insulated spacer ring and the extender ring to hermetically seal the insulated spacer ring to the extender ring and form a vacuum seal between the insulated spacer ring and the extender ring; anda vacuum seal coupled to the extender ring and the walls of the vacuum chamber at the junction between the extender ring and the walls of the vacuum chamber, the vacuum seal capable of sealing the vacuum chamber to maintain a low base pressure vacuum state in the vacuum chamber.