Patent ID: 7892983

Claim:
A substrate processing apparatus, comprising: a processing chamber; a holding member to hold at least a plurality of product substrates in the processing chamber, a heating member to heat the substrates, a supplying member to alternately supply at least a first reactant and a second reactant into the processing chamber; an exhausting port opened to the processing chamber, and a control unit, wherein the supplying member is composed of an elongated nozzle which includes a large number of gas jet holes, the holding member is to hold a plurality of the substrates so as to be stacked in layers in a longitudinal direction of the nozzle, and the exhausting port is positioned on one end side of the nozzle in the longitudinal direction, and the control unit executes a processing of forming thin films on the substrates by supplying the first reactant into the processing chamber, removing a surplus of the first reactant after the first reactant has been adsorbed on the product substrates which are held by the holding member, subsequently supplying the second reactant into the processing chamber, to cause the second reactant to react with the first reactant which has been adsorbed on the substrates, and allows the product substrates to be packed and held on another end side of the nozzle of the holding member in the longitudinal direction, and executes the processing of forming the thin films on the substrates when the number of the product substrates to be held by the holding member is less than the maximum number of the product substrates which can be held by the holding member.