Patent ID: 6190495
Filing Date: 2001-02-20
Classification: C23F,H01J,H01L

Abstract:
A magnetron plasma processing apparatus comprising:a chamber configured to accommodate a target substrate;a pair of electrodes arranged in said chamber to face each other, the target substrate being mounted on one of said electrodes to be position between said electrodes;an electric field generator configured to generate an electric field between said electrodes to have an electric field direction in a first direction connecting said electrodes to each other;an exhaust mechanism configured to exhaust and set said chamber to a vacuum;a process gas supply mechanism configured to supply a process gas into said chamber; anda magnetic field generator configured to generate a magnetic field between said electrodes to have a magnetic field direction in a second direction perpendicular to said first direction, electrons being caused to drift in a drift direction perpendicular to said first and second directions, in cooperation with said electric field and said magnetic field,wherein said magnetic field has, on a plane perpendicular to said first direction between said electrodes, a gradient of a magnetic field intensity such that the magnetic field intensity is higher on an upstream side and is lower on a downstream side in said drift direction, and has a uniform magnetic field intensity over a large area along an upstream end of the target substrate in said drift direction and a region outside said upstream end.