Patent ID: 8148271

Claim:
A substrate processing apparatus comprising: a processing chamber for storing a boat supporting multiple substrates and for processing the multiple substrates, a heater unit installed around the processing chamber for heating the substrates, and a coolant gas supply nozzle including a pipe section extending perpendicular to a main surface of the substrate supported in the boat stored in the processing chamber, and a spray hole formed on the pipe section for spraying coolant gas to at least two of the multiple substrates, wherein the multiple coolant gas supply nozzles are installed, and the first coolant gas supply nozzle and the second coolant gas supply nozzle installed adjacent to the first coolant gas supply nozzle are respectively formed so that the upper end of the spray hole of the first coolant gas supply nozzle and the lower end of the spray hole of the second coolant gas supply nozzle overlap each other.