Patent ID: 9348339
Filing Date: 2016-05-24
CPC Classification: C23C,G05D

Claim Text:
1. A pulse gas delivery system for delivering a sequence of pulses of prescribed mass amounts of gases to a process chamber that includes a chamber valve configured to control a pressure within the process chamber, the system comprising: a plurality of channels, each including, a gas delivery chamber; an inlet valve connected so as to control gas flowing into the corresponding gas delivery chamber; and an outlet valve connected so as to control an amount of gas flowing out of the corresponding gas delivery chamber; and a dedicated multiple channel controller configured so as to control the inlet and outlet valves of each of the channels so that pulses of gases in prescribed amounts can be provided to the process chamber in a predetermined sequence in accordance with a pulse gas delivery process; wherein the dedicated multiple channel controller is configured so as to generate for each channel a pre-delivery trigger signal corresponding to each pulse for that channel, wherein the pre-delivery trigger signal includes a gas type and a pulse mass of gas to be delivered in a corresponding pulse, wherein the dedicated multiple channel controller is configured to provide command signals to the process chamber, and wherein the dedicated multiple channel controller is configured to provide the pre-delivery trigger signal to open and precisely control an open position of the chamber valve so as to control the pressure within the process chamber.