Patent ID: 7931766

Claim:
A multi-layer structure forming method using a film adhesion device, wherein said film adhesion device comprises: a table carrying a semiconductor wafer; a pressing member which presses a photo-resist film onto a surface side of said semiconductor wafer placed on said table; a bumper member provided on an outer peripheral side of said table and comprising a contact surface which is contacted by said pressing member when said pressing member presses said photo-resist film; an elevating support mechanism which supports said bumper member elevatably and positions said bumper member at a predetermined height level; and a pressing force adjustment mechanism which adjusts a pressing force of said pressing member in accordance with a pressing surface area of said semiconductor wafer, wherein said multi-layer structure forming method comprises the steps of: step (1) for adjusting said height level of said contact surface of said bumper member by raising or lowering said bumper member using said elevating support mechanism such that said bumper is positioned at said predetermined height level; step (2) for pressing said photo-resist film onto said surface side of said semiconductor wafer placed on said table using said pressing member; step (3) for forming a wall portion on said semiconductor wafer implementing exposure/removal processing on said photo-resist film adhered to the semiconductor wafer; step (4) for adjusting said height level of said contact surface of said bumper member by raising or lowering said bumper member using said elevating support mechanism such that said bumper member is positioned at said predetermined height level corresponding to said semiconductor wafer having said wall portions; and step (5) for pressing said photo-resist film onto said surface side of said wall portion on said semiconductor wafer placed on said table using said pressing member, wherein in said step (2), said pressing member contacts said contact surface of said bumper member adjusted said height level, moves along a surface of said semiconductor wafer, and said pressing force of said pressing member is adjusted in accordance with said pressing surface area of said semiconductor wafer while said pressing member is moving; in step (5) said pressing member contacts said contact surface of said bumper member adjusted said height level, moves along a surface of said wall portion on said semiconductor wafer, and said pressing force of said pressing member is adjusted in accordance with said pressing surface area of said semiconductor wafer having said wall portion while said pressing member is moving.