Patent ID: 8368075

Claim:
A plasma CVD apparatus comprising: a reaction chamber; a first electrode and a second electrode provided in the reaction chamber; a first high-frequency power source that applies a first alternating-current power to the first electrode, the first alternating-current power having a frequency corresponding to a wavelength of 10 m or more; a second high-frequency power source that applies a second alternating-current power to the second electrode, the second alternating-current power having a frequency corresponding to a wavelength of less than 10 m; a switch that selects a first state in which an output from the first high-frequency power source is applied to the first electrode and an output from the second high-frequency power source is applied to the second electrode at a same time, and a second state in which only the output from the first high-frequency power source is applied to the first electrode, wherein glow discharge plasma is produced by applying an output from the first high-frequency power source to the first electrode and an output from the second high-frequency power source to the second electrode at a same time, wherein the first electrode and the second electrode are adjacent to each other, are provided in the same plane and are separated from each other by an insulating material, and wherein the first electrode and the second electrode have an almost rectangular shape including at least one side of 2000 mm or longer.