摘要:
An enclosure for generating a secondary environment within a processing chamber for coating a substrate. An enclosure wall forms a secondary environment encompassing the coating source, plasma, and the substrate, and separating them from interior of the processing chamber. The enclosure wall includes a plurality of pumping channels for diverting gaseous flow away from the substrate. The channels have an intake of larger diameter from the exhaust opening and are oriented at an angle with the intake opening pointing away from the deposition source. A movable seal enables transport of the substrate in open position and processing the substrate in closed position. The seal may be formed as a labyrinth seal to avoid particle generation from a standard contact seal.
摘要:
A method and apparatus for use in conjunction with a plasma reaction chamber provide both throttling functionality and independent vacuum isolation for a turbomolecular pump. A throttle valve provides for precise reaction chamber pressure regulation, and a gate valve prevents extended exposure of the turbomolecular pump to atmospheric conditions during cleaning or other maintenance operations. The throttle valve and the gate valve may be actuated independently.
摘要:
A bonded multi-layer RF window may include an external layer of dielectric material having desired thermal properties, an internal layer of dielectric material exposed to plasma inside a reaction chamber, and an intermediate layer of bonding material between the external layer and the internal layer. Heat produced by the chemical reaction inside the chamber and by the transmission of RF energy through the window may be conducted from the internal layer to the external layer, which may be cooled during a semiconductor wafer manufacturing process. A bonded multi-layer RF window may include cooling conduits for circulating coolant to facilitate cooling of the internal layer; additionally or alternatively, gas distribution conduits and gas injection apertures may be included for delivering one or more process gases into a reaction chamber. A system including a plasma reaction chamber may employ the inventive bonded multi-layer RF window.
摘要:
A closed-loop, dome thermal control apparatus containing a high-volume fan, a heat exchange chamber, and an enclosure that encloses the fan and the heat exchange chamber. The fan blows air over a dome of a semiconductor wafer processing system and through the heat exchange chamber to uniformly control the temperature of a dome of a plasma chamber to prevent particle contamination of the wafer. The enclosure recirculates the temperature controlled air to the fan to form a closed-loop apparatus.