Patent ID: 9713822
Date: 2017-07-25
CPC Classifications: B05B,B05C,B05D,H01L

Claim:
1. A substrate processing apparatus comprising: a substrate holding rotating mechanism for holding and rotating a substrate; a process liquid reservoir for reserving a processing liquid in an amount sufficient to form a liquid film covering the whole area of a principal face of the substrate, the process liquid reservoir being connected to one end of a process liquid discharge path; a liquid film forming unit for forming a liquid film covering the whole area of the principal face of the substrate by supplying the process liquid reserved in the process liquid reservoir through the process liquid discharge path toward the principal face of the substrate held by the substrate holding rotating mechanism in a single burst; a process liquid supply mechanism having a process liquid nozzle for dispensing a process liquid toward the principal face of the substrate held by the substrate holding rotating mechanism, the process liquid supply mechanism including a process liquid supply path which connects between a process liquid supply source for supplying the process liquid and the process liquid nozzle without going through the process liquid reservoir, the other end of the process liquid discharge path being connected to an intermediate portion of the process liquid supply path between the process liquid supply source and the process liquid nozzle; and a control unit for controlling the liquid film forming unit and the process liquid supply mechanism such that the process liquid is supplied to the process liquid nozzle by going through the process liquid supply path and without going through the process liquid reservoir, so as to be dispensed from the process liquid nozzle toward the principal face of the substrate after the liquid film covering the whole area of the principal face of the substrate is formed by the liquid film forming unit which supplies the process liquid reserved in the process liquid reservoir though the process liquid discharge path, the process liquid supply path, and the process liquid nozzle, toward the principal face of the substrate.