Patent ID: 9343335
Filing Date: 2016-05-17
CPC Classification: B05B,H01L

Claim Text:
1. In a wafer processing photoresist coater module, a method for removing photoresist from a photoresist dispense nozzle of a nozzle array of at least one photoresist dispense nozzle and an edge bead dispense nozzle comprising: positioning an edge bead removal dispense nozzle of the nozzle array over a central area of a substrate disposed on a spin chuck of the coater module; dispensing a photoresist cleaning solvent from the edge bead removal dispense nozzle and forming a first puddle of cleaning solvent in the central area of the wafer; and washing the photoresist dispense nozzle in the puddle for a select amount of time, thereby removing photoresist from the photoresist dispense nozzle.