Patent ID: 8834685
Filing Date: 2014-09-16
Classification: C23C,H01J,H01L

Abstract:
1. A sputtering method for forming a film on a surface of a to-be-processed substrate comprising: providing a sputtering apparatus comprising: generating, with the vertical magnetic field generating means, a vertical magnetic field at a predetermined interval such that vertical lines of magnetic force flow between the target material and a surface of the substrate at a predetermined spacing from one another; introducing the sputtering gas by the gas introducing means into the vacuum chamber; sputtering an inner wall surface of the target by applying a positive electric potential to the anode shield and also by applying a negative electric potential to the cathode unit; and controlling the introduction of the sputtering gas on and off a plurality of times during the step of the sputtering such that deposition and etching relative to the substrate are performed alternately.