Patent ID: 6562200
Filing Date: 2003-05-13
Classification: C23C,H01J

Abstract:
A thin-film formation process for forming a thin film by means of a sputtering apparatus having a chamber comprising a sputtering space and a film-forming space and a grid plate disposed between the sputtering space and the film-forming space, comprising the steps of:placing a target and a substrate in the sputtering space and the film-forming space, respectively; maintaining the pressure in the film-forming space at a pressure lower than the pressure in the sputtering space and such that the following formula, 3.1Ã—10âˆ’24Ã—T/(&sgr;2P)>L is satisfied, where P (Pa) is the pressure of sputtering gas, &sgr; (m) is the diameter of sputtered particles, T (K) is temperature of the film-forming space, and L is the distance between the grid plate and the substrate; and sputtering the target to form a thin film on the substrate.