Patent ID: 7594479
Filing Date: 2009-09-29
Classification: C23C,H01J

Abstract:
1. A plasma CVD apparatus comprising: a vacuum chamber; a first electrode for supplying an electric energy inside the vacuum chamber, the first electrode including a surface in which apertures are formed; a substrate support configured to support a substrate which opposes the surface of the first electrode, wherein the substrate support is configured to enable movement of the substrate in a first direction through the chamber; and first and second introducing ports for gas, located between the first electrode and the substrate, wherein the first and second introducing ports, the substrate support, and the first electrode are arranged relative to one another so that a first flow of gas is introduced by the first introducing port into the chamber in a direction parallel to and along the first direction, a second flow of gas is introduced by the second introducing port into the chamber in a direction parallel to and opposite to the first direction, and the first and second flows of gas are rectified in a direction away from a film formation surface of the substrate and toward the apertures so as to prevent particles with diameters greater than a thickness of a film to be formed on the substrate from being deposited on the film formation surface of the substrate; wherein the gas is exhausted through the apertures to the outside of the vacuum chamber.