Patent ID: 8020570

Claim:
A substrate processing apparatus, comprising: a substrate holder which holds a substrate in a condition that a top surface of the substrate is directed toward above; an opposed member which is disposed opposed against and separated away from the top surface of the substrate held by the substrate holder, and is provided with a nozzle insertion hole which has an opening on a substrate opposing surface facing the substrate top surface; a nozzle which discharges, being inserted in the nozzle insertion hole, a processing liquid in a liquid discharging direction from the nozzle insertion hole toward a to rim portion of the substrate, supplies the processing liquid to the top rim portion, and accordingly performs a predetermined surface processing to the top rim portion; and a guide portion which is provided in the nozzle insertion hole and guides droplets of the processing liquid adhering to the nozzle insertion hole in the vicinity of the opening in the liquid discharging direction; wherein the guide portion includes an enlarged part and a slanted part, the enlarged part being a part of the opening which is formed enlarging the opening in the liquid discharging direction relative to the nozzle inserted in the nozzle insertion hole, the slanted part being a part of an internal surface of the nozzle insertion hole which is formed slanting from a center of the nozzle insertion hole in the liquid discharging direction relative to the nozzle toward the enlarged part and separating away from the center of the substrate top surface.