Patent ID: 7481887
Filing Date: 2009-01-27
Classification: C23C

Abstract:
1. An apparatus for depositing materials onto a micro-device workpiece in a reaction chamber, comprising: a gas source system configured to provide a first precursor, a second precursor, and a purge gas; a valve assembly coupled to the gas source system, the valve assembly being configured to control a flow of the first precursor, a flow of the second precursor, and a flow of the purge gas; a reaction chamber including an inlet coupled to the valve assembly, a workpiece holder, and an outlet; a monitoring system comprising a radiation source that directs a selected radiation through the flow of the first precursor, the flow of the second precursor and/or the flow of the purge gas, and a detector that senses a parameter of the selected radiation; and a controller operatively coupled to the monitoring system and the valve assembly, the controller having a computer readable medium containing computer operable instructions that cause the controller to perform a method comprising: