Patent ID: 6848625
Filing Date: 2005-02-01
Classification: H01L

Abstract:
1. A process liquid supply mechanism for supplying a process liquid, comprising: a process liquid supply source for supplying a process liquid; a process liquid discharging nozzle for discharging the process liquid; a pipe connecting the process liquid supply source to the process liquid discharging nozzle; a pump mounted to the pipe for allowing the process liquid to be discharged from the process liquid discharging nozzle; a pressure sensor for detecting a pressure of the process liquid at a prescribed position intermediate between the pump and the process liquid discharging nozzle, wherein the pressure sensor is mounted in a vicinity of the nozzle; and a controller for controlling the inner pressure of the pump based on the pressure value detected by the pressure sensor and a relationship obtained in advance between the pressure and the discharging rate of the process liquid such that the process liquid is discharged at a prescribed discharging rate.