Abstract: A compliant wafer comb assembly for use in transferring semiconductor wafers between wafer cassettes, wafer carriers, or other wafer holding devices. The compliant wafer comb includes a plurality of slots in which wafer(s) can be held while being transported. The slots are parallel to each other and downward sloping from one end of the comb to the other. The sloped arrangement causes a single wafer at a time to become engaged with the comb when a batch of wafers is transferred from a cassette or wafer holding device to the comb, allowing the compliant features of the comb to compensate for the misalignment of each wafer individually. The comb is coupled to a static base structure by a set of independent column springs which permit motion of the comb slots in any direction necessary to compensate for a wafer's misalignment. This permits transfer of a misaligned wafer or wafers from a cassette or other carrier to the comb without damaging the wafer(s).

Abstract: A process vessel which may be utilized in wet processing of semiconductor wafers includes a tank having one or more fluid displacers attachable to the tank. The one or more fluid displacer(s) have position in which they extend into the interior of the tank. The fluid displacers may be carried by a lid moveable into a closed position covering the opening in the tank. Movement of the lid into the closed position causes the fluid displacers to extend into the tank.

Abstract: An apparatus and method for performing multiple wet processing steps on objects placed within a sealed chamber. The apparatus include a sealable chamber, at least one processing tank within the chamber, and preferably also includes an intrachamber robot configured to move objects to be treated within the chamber. Preferred embodiments utilize at least two processing tanks within the chamber. During use of these exemplary embodiments, objects to be treated are placed within the sealed chamber and the chamber is sealed to create a sealed interior environment. The objects are immersed in a first treatment fluid which is in a first one of the tanks, and then carried by the intrachamber robot from the first to the second tank where there are immersed in a second treatment fluid in the second tank. The objects may be moved back and forth between the tanks as needed in order to complete the process being performed. After processing is complete, the chamber is unsealed and the objects are removed from the chamber.

Abstract: A method and apparatus for monitoring characteristics of a fluid contained in a vessel includes a fluid displacer suspended in the vessel. The buoyant force acting on the fluid displacer is measured using a pair of force transducers and used to calculate fluid characteristics such as the height of the fluid in the vessel, fluid density, solute concentration, and/or the presence of fluid cascading from one section of the vessel to another.

Abstract: A method and apparatus for monitoring characteristics of a fluid contained in a vessel includes a pair of triangular fluid displacers suspended in the vessel. The buoyant forces acting on the fluid displacers are measured using force transducers and used to calculate fluid characteristics such as the height of the fluid in the vessel, fluid density, solute concentration, and/or the presence of fluid cascading from one section of the vessel to another.