Patent ID: 8846145
Filing Date: 2014-09-30
Classification: B05B,G03F,H01L

Abstract:
1. A liquid processing method that forms a coating film by supplying and pouring a coating solution from a coating solution nozzle onto a surface of a substrate held substantially horizontally by a substrate holder, the method comprising: moving the coating solution nozzle to a nozzle bath for keeping the coating solution nozzle in a standby state; controlling a dispense process including a pouring operation of the coating solution from the coating solution nozzle, a suction operation of the coating solution and an anti-drying liquid for the coating solution, and a discharge operation of the anti-drying liquid; analyzing and checking image data of the coating solution nozzle photographed by an imaging unit; and displaying the photographed image data of the coating solution nozzle on a soft scale having graduations which are displayed to be overlapped with the image data of the coating solution nozzle photographed by the imaging unit in a vertical direction, and inputting a setting value, wherein, analyzing and checking the image data includes: making a determination by comparing the setting value set by the graduations of the soft scale in displaying the image data with suction positions of the coating solution and the anti-drying liquid in the coating solution nozzle with reference to the photographed image data of the coating solution nozzle under operation, such that the coating solution and the anti-drying liquid in the coating solution nozzle are positioned at an optimum position, and the dispense process is controlled based on the determination to perform an anti-drying adjustment of the coating solution in a leading end portion of the coating solution nozzle.