Patent ID: 8739729

Claim:
A substrate treating apparatus comprising: a substrate support member supporting a substrate; a nozzle arm including a plurality of nozzles configured to discharge liquid onto the substrate; a waiting port configured to receive the plurality of nozzles installed in the nozzle arm when the plurality of nozzles wait for performing processes, the waiting port being at a side portion of the substrate support member, the waiting port including, a first housing having an opened top portion and sidewalls, the first housing providing a nozzle receiving space for receiving the plurality of nozzles, and organic solvent supply members that enter the housing through the sidewalls of the housing, the organic solvent supply members one-to-one corresponding to the plurality of nozzles received in the housing, the organic solvent supply members configured to supply organic solvent to a front end of a nozzle selected from the corresponding nozzles; and a storage port configured to provide a recessed space for receiving the plurality of nozzles, the storage port being at a side of the waiting port, the storage port including, a second housing having an opened top portion and a downwardly convex bottom wall defining a recessed region, and an organic solvent supply member disposed in an inclined wall of the downwardly convex bottom wall, the organic solvent supply member configured to supply the organic solvent to the recessed space.