Patent ID: 6740210
Filing Date: 2004-05-25
Classification: C23C

Abstract:
A method for forming a film by sputtering on a substrate, comprising:a step of controlling a transfer speed of the substrate so as to compensate for a film-forming rate while sputtering; a step of controlling an electric power applied to a heating unit to control the amount of heat applied to the substrate in accordance with the change in transfer speed; and a step of controlling the transfer speed of the substrate to intermittently increase by (i) controlling the electric power to a constant P1 while the transfer speed is V1, (ii) controlling the electric power to be P2 when the transfer speed is increasing, wherein P2>P1; and (iii) controlling the electric power to be a constant P3 when the transfer speed reaches V2, wherein V2>V1 and P2>P3>P1.