Patent ID: 7575634
Filing Date: 2009-08-18
Classification: G03F,H01L

Abstract:
1. A coating process apparatus for forming a coating film on a substrate to be processed, comprising: a holding mechanism which holds the substrate to be processed in an approximately horizontal posture; a coating liquid supply mechanism supplying a predetermined coating liquid to a top surface of the substrate to be processed held by the holding mechanism; a rotation mechanism rotating the substrate to be processed held by the holding mechanism; and a process container accommodating the holding mechanism and capable of exhausting an atmosphere around the substrate to be processed from a bottom, wherein the process container includes: a first cup having an outer circumferential wall surrounding an outside of the substrate to be processed, and an airflow control member having a cross section of an approximately rectangular shape defined by an upper ring portion having a vertical cross section of an approximately triangular shape and protruding upward, and a lower ring portion having a cross section of an approximately triangular shape and protruding downward, and provided close to a periphery of the substrate to be processed in the first cup so as to surround an outer circumference of the substrate to be processed, wherein an exhaust passage substantially exhausting an atmosphere around the substrate to be processed is provided between the airflow control member and the outer circumferential wall of the first cup, and wherein a space between an apex of the upper ring portion and an upper end of the outer circumferential wall defines an atmosphere extraction port for the exhaust passage.