Patent ID: 7625822
Filing Date: 2009-12-01
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a gate insulating film on a surface of a substrate; sequentially forming a polysilicon layer and a first insulating film on the gate insulating film; forming at least two bottom antireflective coating films on the first insulating film; forming a photoresist film pattern on a predetermined region of the bottom antireflective coating films; sequentially etching the bottom antireflective coating films and the first insulating film using the photoresist film pattern as a mask to form a first insulating film pattern; forming sidewall spacers at sides of the first insulating film pattern; and etching the polysilicon layer using the sidewall spacers and the first insulating film pattern as masks; wherein the at least two bottom antireflective coating films are formed of the same material by successive coating and baking processes.