Patent ID: 6605153
Filing Date: 2003-08-12
Classification: B05B,B05C,H01L

Abstract:
An apparatus for forming a coating film on a substrate, comprising:a substrate holding portion configured to hold the substrate; a coating solution nozzle, arranged to face the substrate and discharge a coating solution to the substrate; a drive mechanism configured to produce relative movement between said coating solution nozzle and a surface of the substrate while the coating solution is being discharged; a mask unit covering a coating film non-formation area of the substrate and including a mask member configured to catch the coating solution from said coating solution nozzle and a case body movable with respect to the mask member between the positions at which the mask member is surrounded and not surrounded; and a cleaning mechanism provided in said mask unit and having a solvent nozzle configured to discharge a solvent to the mask member to dissolve the coating solution adhered to the mask member, remove the coating solution adhered to the mask member and clean the mask member.