Patent ID: 8895116
Filing Date: 2014-11-25
Classification: C23C,H01J,H01L

Abstract:
1. A manufacturing method of a crystalline semiconductor film using a film formation apparatus, the film formation apparatus comprising: a treatment room; an upper electrode with a gas introduction port; a dispersion plate with a peripheral portion with a plurality of gas holes and a center portion with no gas hole; a first gas diffusion area between the upper electrode and the dispersion plate; a shower plate with a plurality of gas holes; a second gas diffusion area between the dispersion plate and the shower plate; and a lower electrode in the treatment room, wherein the center portion of the dispersion plate faces the gas introduction port, wherein a diameter of the center portion of the dispersion plate with no gas hole is larger than a diameter of the gas introduction port, and wherein the lower electrode faces the upper electrode with the dispersion plate, the first gas diffusion area, the second gas diffusion area and the shower plate interposed therebetween, wherein the method for forming the crystalline semiconductor film using the film formation apparatus comprising the steps of: