Film forming method and film forming apparatus

摘要

After coating a resist for silylation on the semi-conductor substrate, the resist is exposed with a pattern. Then the silylation process is performed to form a silylated layer and the silylated layer is hardened with performing an electron beam processing or a ultra-violet ray processing. After that, an etching is performed with using the hardened silylated layer as a mask and the wiring step is taken without removing the hardened silylated layer as a stopper for chemical mechanical polishing. With this embodiment, the patterning steps of an insulation film can be simplified.