Patent ID: 7436068

Claim:
A component of a film-forming device in which a thin film is formed on a substrate in the device using a film-forming material, the component of the film-forming device comprising: a body having a back face and a top face and a large number of through holes each extending from the back face to the top face formed therein, wherein one of the back face and the top face includes a surface on which the thin film adheres during use, and the through holes provide access from the other one of the back face and the top face to the thin film adhered on the surface, whereby a cleaning solution penetrates into a boundary between the surface and the thin film adhered thereon during cleaning thereof; and wherein the through holes have a diameter smaller than a size of any particle of the film-forming material or a plasma thereof, thereby preventing penetration of any particle of the film-forming material or the plasma thereof into the through hole.