Patent ID: 7622376

Claim:
A method for manufacturing a semiconductor device using a polymer, the method comprising: forming a first insulating layer on a substrate; forming an antireflective coating layer on the first insulating layer; forming a first photoresist pattern over the antireflective coating layer; forming a polymer around the first photoresist pattern, the polymer having an opening exposing a portion of the antireflective coating layer, the opening having a predetermined width; etching the antireflective coating layer and the first insulating layer using the polymer as a mask to expose a portion of the substrate; removing the first photoresist pattern and the polymer; forming a gate insulating layer on the exposed portion of substrate; forming a polysilicon layer on the gate insulating layer and the etched first insulating layer; planarizing the polysilicon layer until the etched first insulating layer is exposed, to form a gate; and removing the exposed first insulating layer; wherein forming the polymer is performed separately from etching the antireflective coating layer and the first insulating layer.