Patent ID: 7641763

Claim:
A coating film removal apparatus for removing an unnecessary coating film at an edge portion of a quadrangular substrate on which the coating film is formed, by blowing a solvent to said edge portion, comprising: a substrate holding portion configured to hold said substrate horizontally; a registration mechanism configured to clamp opposite sides of said substrate held by said substrate holding portion for achieving registration of said substrate; a movement mechanism configured to move said substrate holding portion and said registration mechanism in a direction in which other sides except for said opposite sides clamped by said registration mechanism extend; coating film removal mechanism configured to feed a solvent to the edge portions of said other sides and, suck and discharge the solvent and a dissolved coating film with a position of said coating film removal mechanism being fixed while said substrate is moved by said movement mechanism; and a forward/backward movement mechanism configured to move said coating film removal mechanism forward/backward with respect to said substrate, wherein said coating film removal mechanism includes a first solvent nozzle portion and a second solvent nozzle portion provided and spaced apart from each other along one of said opposite sides of said substrate, and a space adjustment mechanism configured to adjust a space between the first solvent nozzle portion and the second solvent nozzle portion, and said registration mechanism includes approach stages including 1) a base upon which said substrate contacts, 2) a sidewall extending from said base, and 3) an upper surface connected to said sidewall without extending over a top surface of said substrate.