Patent ID: 8632634

Claim:
A coating apparatus in which a film is formed on a surface of a substrate placed in a coating chamber by supplying a reactive gas to inside the coating chamber and heating the substrate, said coating apparatus comprising: a coating chamber; a first flow path connected to the top of the coating chamber and configured to supply the reactive gas without mixing with a cooling gas to the coating chamber; a distributor plate disposed within the coating chamber such that reactive gas supplied from the first flow path impinges on the distributor plate, and further disposed upstream of the substrate relative to a direction of flow of the reactive gas; the distributor plate having therein: a first through-hole configured to pass the reactive gas down toward the substrate; and a second through-hole configured to pass the cooling gas through the inside of the distributor plate, the first through-hole arranged so as not to meet the second through-hole; a second flow path configured to supply the cooling gas to the second through-hole of the distributor plate; a third flow path configured to receive the cooling gas discharged from the distributor plate and to introduce the cooling gas into the coating chamber; and a fourth flow path configured to exhaust the cooling gas together with the reactive gas from the coating chamber, the cooling gas having been introduced from the third flow path into the coating chamber.