Patent ID: 9593415
Date: 2017-03-14
CPC Classifications: C23C,C30B,H01L

Claim:
1. A substrate processing apparatus in which processes with respect to substrates are performed, the substrate processing apparatus comprising: a lower chamber having an opened upper side, the lower chamber comprising a passage allowing the substrates to pass therethrough in a side thereof; an external reaction tube closing the opened upper side of the lower chamber to provide a process space in which the processes are performed; an internal reaction tube disposed within the external reaction tube, the internal reaction tube being disposed around a substrate holder placed in the process position to define a reaction region with respect to the substrates; a substrate holder on which the one or more substrates are vertically stacked, the substrate holder being movable between a stacking position in which the substrates are stacked and a process position in which the processes with respect to the substrates are performed; a plurality of supply nozzles disposed along an inner wall of the external reaction tube, the plurality of supply nozzles having a plurality of supply holes for discharging a reaction gas; and a plurality of exhaust nozzles disposed along the inner wall of the external reaction tube, the plurality of exhaust nozzles having a plurality of exhaust holes for suctioning an non-reaction gas and byproducts within the process space, wherein the plurality of supply holes are disposed in and along an inner wall of the internal reaction tube to have a phase difference in a circumference direction of the internal reaction tube from each other and to be located at a different height from each other, wherein the plurality of exhaust holes are disposed in and along the inner wall of the internal reaction tube to have a phase difference in a circumference direction of the internal reaction tube from each other and to be located at a different height from each other, wherein each of the supply holes is disposed at a same height as a corresponding one of the exhaust holes, and a center of each of the supply holes is symmetric to a center of the corresponding one of the exhaust holes with respect to a center of the internal reaction tube, and wherein the lower chamber comprises an auxiliary gas supply port connected to a stacking space defined inside the lower chamber.