Patent ID: 9562290
Date: 2017-02-07
CPC Classifications: C23C,H01J

Claim:
1. A plasma CVD apparatus, comprising: a vacuum chamber whose interior is hollow; a vacuum pump system for vacuuming the interior of said vacuum chamber; a pair of deposition rollers disposed in said vacuum chamber and arranged such that axes thereof extend in a horizontal direction and in parallel to each other, wherein the axes are spaced from each other in the horizontal direction and in a direction orthogonal to the axes; a substrate wound around the deposition rollers; a gas supplying portion for supplying a source gas to the interior of said vacuum chamber; a plasma power supply for forming a plasma generating region between said pair of deposition rollers and in the vicinity of a surface of one of said deposition rollers, thereby depositing a coating on a surface of the substrate wound around said one of said deposition rollers, wherein said gas supplying portion is provided in a plasma non-generating region such that the one of the deposition rollers is provided between the plasma generating region and the plasma non-generating region; and a guide roller for guiding the substrate, which guide roller is insulated from said plasma power supply and is provided on the opposite side of the plasma generating region with respect to said one of said deposition rollers, a flow passage provided between the plasma generating region and the plasma non-generating region, through which the source gas supplied from said gas supplying portion in said plasma non-generating region is distributed to the plasma generating region, wherein a dimension of said flow passage is defined by the relative positions of the guide roller and one of the deposition rollers, and wherein the dimension of said flow passage is set to be capable of inhibiting the flow of plasma from the plasma generating region to the plasma non-generating region.