304 SST Batch Wafer Processing

Machines of this class are batch wet-processing systems for wafers and similar substrates. They are used to carry a set of wafers through cleaning and surface-conditioning steps in a controlled environment that limits particle deposition and process variation.

Such systems belong to the clean and wet process equipment family, where the focus is on removing residues, films, and other surface contaminants while maintaining handling discipline suited to delicate substrates. They are generally designed for repeatable immersion, rinse, and dry style operations within a process line.

A machine of this class typically places wafers into a carrier or batch handling arrangement and moves them through one or more liquid process stages. Those stages may include chemical exposure, rinsing, and drying, with the equipment controlling fluid delivery, sequence timing, and wafer transfer to support uniform treatment across the batch.

The process is built around contact between the wafer surface and process liquids under controlled conditions. Mechanical handling is kept orderly and enclosed where possible, while fluid management, drainage, and exhaust or drying functions help reduce redeposition and prepare the wafers for the next manufacturing step.

This class is usually used after wafer formation or between major fabrication steps when surfaces must be cleaned, stripped, or otherwise prepared before subsequent processing. It sits in the wet bench or wet clean portion of the fab flow, where surface condition has direct impact on later lithography, deposition, or inspection steps.

Machines of this class are generally used for wafer cleaning, residue removal, surface preparation, and other wet chemistry steps in semiconductor and related substrate processing. They may also serve cleaning roles in precision-optics or other contamination-sensitive manufacturing contexts where controlled batch handling is important.