Patent ID: 9353440
Filing Date: 2016-05-31
CPC Classification: B08B,C23C,Y10T

Claim Text:
1. A gas distribution apparatus to control a flow of gas into a process chamber, comprising: a gas distribution plate having a front side and a back side; a gas delivery channel extending through the gas distribution plate, the delivery channel having a length defined by a first end and a second end, the delivery channel including a plurality of apertures spaced along the length extending through the gas distribution plate to the front side of the gas distribution plate; a gas delivery system connected to the first end and the second end of the delivery channel, the gas delivery system comprising a first inlet line in flow communication with the first end of the delivery channel and the second inlet line in flow communication with the second end of the delivery channel, a pump line, a first purge line in flow communication with the first inlet line and a second purge line in flow communication with the second inlet line; and a controller to regulate the flow of the gas through the delivery channel and into the process chamber.