Patent ID: 7651285
Filing Date: 2010-01-26
Classification: G03B,G03F

Abstract:
1. An edge exposure apparatus performing an exposure process on an edge portion of a substrate having a coating film formed thereon, comprising: a substrate holding portion horizontally holding a substrate having a coating film formed on a surface thereof; a position detection portion detecting positional data of an outer edge of the substrate held by the substrate holding portion; an edge exposure portion performing an exposure process on an edge portion of the substrate held by said substrate holding portion; a developer supply portion supplying a developer to an exposed region of the substrate held by said substrate holding portion and subjected to an exposure process at said edge portion, thereby dissolving and removing the coating film in said exposed region; an alignment portion moving the substrate held by said substrate holding portion and said edge exposure portion relatively horizontally to each other; and a control portion controlling said alignment portion such that a positional relation between the outer edge of the substrate and the edge exposure portion is kept constant, based on the positional data of the outer edge of said substrate, when an exposure process is performed by said edge exposure portion.