摘要:
Method and apparatus for reducing contamination of a substrate in a substrate processing system. The apparatus has a substrate support, a gas directing shield circumscribing the substrate support and a shadow ring disposed vertically above the substrate support and gas directing shield for retaining the substrate. The gas directing shield and substrate support define an annular channel that is provided with an edge purge gas. The edge purge gas imparts a force at the edge of a substrate resting on the substrate support the lifts it off the substrate supports and against the shadow ring. The shadow ring further has a plurality of conduits extending from its upper surface to its sidewall to provide a path for the edge purge gas to vent and to impede the flow of process gases under the backside and around the edge of the substrate. The method includes the steps of providing a substrate upon the substrate support, applying a first flow of gas to a first set of ports to lift the substrate off of the substrate support, centering the substrate upon the substrate support and applying a second flow of gas to a second set of ports to establish and maintain thermal control of the substrate.
摘要:
A lid assembly for a process chamber. The lid assembly includes a hinge having a hinge mount affixed to the chamber and a hinge arm. A pin extends from the hinge mount through an elongated slot in the hinge arm allowing both rotational and longitudinal motion of the hinge arm relative to the hinge mount. A support frame attached to the hinge arm has two side arms that extend perpendicularly from the hinge arms toward the front of the chamber. The lid is pivotally connected to the side arms by a pivot connection aligned with the center of mass of the lid. A detent extends from the lid through a slot in the side arm at a position offset from the pivot connection. The detent and slot serve to limit the allowable rotation of the lid relative to the lid support frame. Thus, the lid is allowed to float over the opening of the chamber as the lid is closed so that the lid may be positioned in parallel alignment relative to the opening of the chamber before being secured to the chamber.
摘要:
The present invention provides a method and apparatus for improving thermal management of gas being delivered to a chemical vapor deposition chamber. Thermal management is accomplished using a heat transfer fluid in thermal communication with the deposition gas passageways delivering the gases to the chamber for deposition. The gas injection manifold includes gas passageways and coolant liquid passageways, wherein the gas passageways extend through a constant voltage gradient gas feedthrough and the coolant liquid passageways extend through a gas input manifold coupled to the inlet end of the constant voltage gradient gas feedthrough. This arrangement provides for increase coolant liquid flow and allows maintenance or disassembly of the constant voltage gradient gas feedthrough without breaking the seal on the coolant liquid system.