Patent ID: 8960124
Filing Date: 2015-02-24
Classification: C23C,H01J,Y10S

Abstract:
1. A plasma processing apparatus, comprising: an inner tube made of aluminum having an anodized surface, the inner tube is provided inside a metal vacuum chamber and in which plasma processing is performed with a substrate disposed in a plasma diffusion region; a gas nozzle which is made of aluminum having an anodized surface and which is provided in an inner side wall of the vacuum chamber and disposed to penetrate a through-hole provided in the inner tube; a protruding portion having a leading end is provided in the through-hole of the inner tube, the leading end of the protruding portion in point-contact with the gas nozzle is not provided with the anodized aluminum, and a surface of a portion of the gas nozzle in point-contact with the protruding portion of the inner tube and in a surface of a portion of the gas nozzle in contact with the vacuum chamber is not provided with the anodized aluminum so that the inner tube is electrically conductive with the vacuum chamber.