Patent ID: 6392350
Filing Date: 2002-05-21
Classification: C23C,H01J,H01L

Abstract:
A plasma processing method for supplying a microwave into a vacuum vessel by high-frequency producing means and for forming a magnetic field in said vacuum vessel by magnetic field forming means to produce a plasma in said vacuum vessel by electron cyclotron resonance between said microwave and said magnetic field to treat a substrate to be treated with the produced plasma, said method comprising:a first step of introducing said substrate into said vacuum vessel and for producing a plasma to heat said substrate; and a second step of activating a thin-film deposition gas in said vacuum vessel as a plasma which forms a thin film on said substrate; wherein the shape of said magnetic field is changed by setting current values of said magnetic field forming means at said first and second steps to be different from each other so that a magnetic flux density on said substrate during the production of said plasma at said first step is greater than that at said second step.