METHOD AND APPARATUS FOR MULTI-CHAMBER EXHAUST CONTROL

摘要

A method of operating a multi-chamber module including a first chamber, a second chamber, and a dispense arm area positioned between the first chamber and the second chamber. The method includes flowing a process gas into the first chamber, the second chamber, and the dispense arm area. The method also includes exhausting a first gas from the first chamber using a first exhaust path in fluid communication with a shared exhaust, exhausting a second gas from the second chamber using a second exhaust path in fluid communication with the shared exhaust, and exhausting a third gas from the dispense arm area using a dispense arm area exhaust in fluid communication with the shared exhaust. The method further includes monitoring a first chamber pressure in the first chamber, a second chamber pressure in the second chamber, and a dispense pressure in the dispense arm area, and adjusting a flow through at least one of the first exhaust path, the second exhaust path, and the dispense arm area exhaust to maintain the first chamber pressure and the second chamber pressure at a value higher than the dispense pressure.