Patent ID: 6749086
Filing Date: 2004-06-15
Classification: H01L

Abstract:
A module for dispensing material to a semiconductor processing tool, the module comprising:a vessel defining a first integral chamber and a second integral chamber separated by a common wall, the first chamber includes a first port and a second port, the vessel configured to receive the material from a bulk supply and to receive a pressurized flow of gas from a gas source, the second chamber configured to be in fluid communication with the semiconductor fabrication tool through a first port and with a pressurized gas supply through a second port; and a valve assembly external from the vessel and operable to selectively permit fluid communication between the first chamber and the second chamber during a non-refill module state and to prevent fluid communication between the first chamber and the second chamber during a refill module state, the valve assembly including, a first control valve positioned between the first port of the first chamber and the first port of the second chamber, a second control valve positioned between the second port of the first chamber and the second port of the second chamber, a material supply valve positioned between the first port of the first chamber and a bulk material supply, a vent valve positioned between the second port of the first chamber and an outside environment; such that in the non-refill module state the first and second control valves are open, the material supply valve is closed, and the vent valve is closed, and in the refill module state the first and second control valves are closed, the material supply valve is open, and the vent valve is open.