Patent ID: 11927886
Assignee: SEMES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 13:
14. A substrate treating method comprising, wherein alternately transferring a substrate to a first support member and a second support member, and wherein a nozzle arm on which a plurality of nozzles discharging a photoresist liquid are mounted moves to the first substrate support member, and one of the plurality of nozzles supplies the photoresist liquid to a substrate located in the first substrate support member by discharging the photoresist liquid while the substrate located in the first substrate support member is rotated, wherein a purge nozzle that is one of the plurality of nozzles vertically arranged with a purge port and excluded from the nozzle to discharge the photoresist liquid to the substrate located in the second support member performs a purge operation by discharging the photoresist liquid to the purge port in a process of moving the nozzle arm from one of the first substrate support member and the second substrate support member, wherein after the nozzle arm is moved towards another one of the first substrate support member and the second substrate support member, one of the plurality of nozzles supplies the photoresist liquid to the substrate located in the second substrate support member by discharging the photoresist liquid while the substrate located in the second substrate support member is rotated, wherein the purge nozzle performs the purge operation a preset number of times from the purge nozzle in the process of moving the nozzle arm between the first substrate support member and the second substrate support member multiple times.