Patent ID: 6053977
Filing Date: 2000-04-25
Classification: B05C,H01L

Abstract:
A coating apparatus comprising:a spin chuck for supporting a substrate to be coated rotatably;a driving mechanism for rotating the spin chuck;a coating liquid supplying mechanism for supplying a coating solution to the substrate to be coated supported by the spin chuck;an outer cup arranged to surround the substrate to be coated supported by the spin chuck;an inner cup having a main body and a projecting portion which projects downward around a total circumference of an inner portion of the main body, the projecting portion overlapping in a non-contact fashion with an upper peripheral portion of the substrate to be coated over and being positioned in close vicinity of the upper peripheral portion upon coating, and the inner diameter of said projecting portion being smaller than the diameter of the substrate, wherein the inner cup is split radially into pieces and respective pieces can be moved radially; and an attaching/detaching mechanism for attaching and detaching the inner cup.