Patent ID: 9028614
Filing Date: 2015-05-12
Classification: C23C,C30B,H01L

Abstract:
1. A substrate processing apparatus comprising: a reaction chamber configured to process a plurality of substrates; a boat configured to hold the plurality of substrates; a boat heat-insulating part having a cylindrical shape disposed under the boat; a gas supply nozzle including a gas supply port configured to supply a film-forming gas to the plurality of substrates; an exhaust port configured to exhaust the film-forming gas from the reaction chamber; a heat exchange part installed under the boat heat-insulating part wherein the heat exchange part defining a second flow path narrower than a first flow path defined by an inner side wall of the reaction chamber and the boat and configured to exchange heat with the film-forming gas supplied into the reaction chamber, the heat exchange part comprising a first heat exchange part having a cylindrical shape, the first heat exchange part being spaced apart from the boat heat-insulating part and surrounding at least a portion of a side surface of the boat heat-insulating part, wherein an upper end portion of the heat exchange part is lower than a lowermost portion of the boat and an upper end of the first heat exchange part is higher than that of the boat heat-insulating part; and a gas discharge part installed between the lowermost portion of the boat and a top portion of the boat heat-insulating part, the gas discharge part including a plurality of columns defining a space between the lowermost portion of the boat and the heat exchange part.