Patent ID: 7413612
Filing Date: 2008-08-19
Classification: C23C,H01L

Abstract:
1. An apparatus for adjusting a spacing between a gas distribution member and a substrate, the apparatus comprising: a processing chamber including the gas distribution member; a substrate support disposed in the processing chamber and located generally opposite from the gas distribution member, the substrate support having a substrate support surface configured to support the substrate on which to form a layer; a leveling plate coupled to the substrate support, the leveling plate including at least three measurement locations to mount a measuring device to measure distances between the leveling plate and a reference surface fixed with respect to the gas distribution member at each of the measurement locations, each of the at least three measurement locations including an aperture in the leveling plate, the aperture configured for insertion of the measuring device; and at least three adjustment members each extending from the leveling plate to the reference surface, each of the at least three adjustment members disposed at separate adjustment locations distributed on the leveling plate and separated from the at least three measurement locations, the at least three adjustment members independently adjustable to change positions of the leveling plate relative to the reference surface and adjust spacings between the substrate support surface and the gas distribution member at a plurality of corresponding adjustment locations on the substrate support surface to modify a tilt of the substrate support surface with respect to the gas distribution member.