Patent ID: 9706634
Date: 2017-07-11
CPC Classifications: H01J,H01L,H05H

Claim:
1. An apparatus to treat a substrate, comprising: a reactive gas source having a reactive gas outlet disposed in a process chamber, the reactive gas outlet to direct a first reactive gas to the substrate; a plasma chamber coupled to the process chamber and including an extraction plate having an extraction aperture extending along a first direction; and a substrate stage configured to hold the substrate, disposed within the process chamber and movable along a second direction perpendicular to the first direction between a first position facing the reactive gas source and a second position facing the extraction aperture; and a gas flow restrictor disposed between the reactive gas outlet and the extraction aperture, the gas flow restrictor defining a differential pumping channel between at least the plasma chamber and the substrate stage, wherein the reactive gas sources is a first reactive gas source, the apparatus further comprising a second reactive gas source having a second outlet directing the first reactive gas to the substrate, the plasma chamber being disposed between the first reactive gas source and the second reactive gas source, wherein the substrate stage is movable in a sequence between the first position, second position and a third position facing the second reactive gas source.