Patent ID: 7709063

Claim:
A method of forming a film on a substrate using a remote plasma apparatus comprising: a body defining a cavity and having first and second inlets, the cavity comprising a plasma generation region and a processing region, the first inlet communicating with the plasma generation region to introduce a first gas into the plasma generation region, the second inlet communicating with the processing region to supply a second gas into the processing region; an energy source arranged and adapted to apply energy within the plasma generation region to generate, from the first gas, plasma including radicals; a plate arranged between the plasma generation region and the processing region, the plate being formed with a plurality of perforated holes which the radicals pass through, wherein the perforated holes each has a diameter not larger than three millimeters, and an aperture ratio of the perforated holes to the plate is not greater than five percent so as to avoid diffusion of the second gas from the processing region to the plasma generation region and as a result to suppress backward flow of the second gas into said plasma generation region; and a substrate supporter arranged within the processing region and adapted to support a substrate to be processed by using a reaction between the radicals passing through the perforated holes and the second gas supplied through the second inlet, the method comprising: supplying, as the first gas, an oxygen-containing gas into the plasma generation region through the first inlet; and supplying, as the second gas, a silicon containing gas into the processing region through the second inlet.