Patent ID: 8741063
Filing Date: 2014-06-03
Classification: C23C,F16L,H01L

Abstract:
1. A substrate processing apparatus comprising: a substrate holder comprising a substrate stacking part configured to hold a plurality of vertically stacked substrates and a cylinder part disposed under the substrate stacking part to enclose a lower portion of the substrate holder, wherein the cylinder part is disposed lower than a lowermost one of a plurality of gas exhaust outlets and a lowermost one of a plurality of gas injection holes and is configured to prevent gas from flowing into the lower portion of the substrate holder; an inner tube configured to accommodate the substrate holder, wherein a space between the cylinder part and a lower portion of the inner tube is smaller than a space between the substrate stacking part and the upper portion of the inner tube, and wherein a distance between an inner wall of the inner tube and the cylinder part is shorter than a distance between two neighboring substrates of the plurality of vertically stacked substrates; an outer tube configured to enclose the inner tube with a gap therebetween, wherein a portion of the gap at the lower portion of the inner tube is larger than a portion of the gap at the upper portion of the inner tube; a gas nozzle installed in the inner tube, wherein the plurality of gas injection holes are disposed in the gas nozzle; a source gas supply unit configured to supply a source gas to an inside of the inner tube through the gas nozzle, wherein the plurality of gas exhaust outlets are disposed opposite to the gas nozzle in a manner that the lowermost one of the plurality of gas exhaust outlets faces the lowermost one of the plurality of gas injection holes and that the inside of the inner tube communicates with the gap through the plurality of gas exhaust outlets; and an exhaust unit configured to exhaust the gap so as to create a gas stream inside the inner tube in a direction from the plurality of gas injection holes to the plurality of gas exhaust outlets.