Patent ID: 8267040

Claim:
A plasma processing apparatus comprising: a process vessel in which a substrate is processed; a gas introducing part that introduces process gas into said process vessel; a transmissive window including a dielectric to airtightly cover an upper opening of the process vessel; an antenna member, located above the transmissive window, that introduces a microwave into the process vessel; a support part supporting a peripheral edge portion of said transmissive window; and an exhaust pipe that exhausts an atmosphere in the process vessel via an exhaust device, wherein under said support part, an eave portion that is separate from a gas supply nozzle disposed in a sidewall of the process vessel, and projects from the sidewall of the process vessel toward an interior of the process vessel, and is separate from a contact point between the support part and a lower surface of said transmissive window by a predetermined vertical distance on an entire surface of the sidewall in a circumferential direction, and wherein the predetermined distance is set to 0.5 to 10 mm.