Patent ID: 6267142
Filing Date: 2001-07-31
Classification: H01L,Y10T

Abstract:
A solution delivery system for use with a wafer preparation system, comprising:a de-ionized water (DIW) dispense drawer having an input for receiving an initial flow of DIW from a facility water supply, a first pressure regulator for stabilizing the initial flow of DIW and producing a substantially steady flow of DIW as a first DIW output of the DIW dispense drawer, and a high flow line configured for non-critical wafer preparation operations, the high flow line receiving as an input the initial flow of DIW from the facility water supply and producing a substantially unregulated flow of DIW as a second DIW output of the DIW dispense drawer; anda chemical drawer configured to receive the substantially steady flow of DIW and the substantially unregulated flow of DIW from the DIW dispense drawer, the chemical drawer further being configured to receive an initial flow of chemicals from a chemical source, and the chemical drawer further including a second pressure regulator for stabilizing the initial flow of chemicals from the chemical source and producing a substantially steady flow of chemicals, and a mix manifold for mixing the substantially steady flow of DIW received from the DIW dispense drawer and the substantially steady flow of chemicals, the mix manifold being configured to output a chemical solution having a controlled concentration.