Patent ID: 9305810
Filing Date: 2016-04-05
CPC Classification: H01L,Y10T

Claim Text:
1. A method of supplying gases to a process chamber, comprising: supplying a first process gas to the process chamber from a first gas panel through a first fast gas exchange module during a first process, comprises selectively diverting the first process gas from a first flow controller through a second flow controller to the process chamber or an exhaust, or selectively diverting the first process gas from the first flow controller through a third flow controller to the process chamber or the exhaust, wherein the second flow controller is in fluid communication with the third flow controller; supplying a second process gas to the process chamber from a second gas panel through a second fast gas exchange module during a second process, comprises selectively diverting the second process gas from a fourth flow controller through a fifth flow controller to the process chamber or an exhaust, or selectively diverting the second process gas from the fourth flow controller through a sixth flow controller to the process chamber or the exhaust, wherein the fifth flow controller is in fluid communication with the sixth flow controller, wherein the first and second process gases are supplied into the process chamber in an alternating sequence; and synchronizing a change in a diverting state of each of the flow controllers in the first and second fast gas exchange modules so that a frequency of the first or second process gas flowing into the process chamber is twice a frequency of the change in the diverting state for each of the flow controllers in the first or second fast gas exchange module.