Patent ID: 7331306

Claim:
A plasma processing apparatus, comprising: a vacuum chamber; gas supply equipment for supplying gas into the vacuum chamber; an exhaust equipment for exhausting the vacuum chamber; a pressure-controlling valve for controlling the internal pressure of said vacuum chamber; a substrate electrode for receiving thereon a substrate in the vacuum chamber; a dielectric cylinder having openings at both ends thereof and arranged such that one of the openings faces the substrate electrode; a coil provided inside the dielectric cylinder and outside the vacuum chamber; high-frequency power supply equipment capable of supplying high-frequency power of 100 kHz to 100 MHz to the coil; a first metal plate provided at the one of the openings of the dielectric cylinder, the one of the openings being on a side of the dielectric cylinder closer to the substrate electrode and being closed by the first metal plate; and a second metal plate provided at a peripheral edge of the other of the openings of the dielectric cylinder, wherein the first metal plate is connected to the second metal plate by a metal rod or a bolt extending through a penetration hole provided in the direction of a cylinder axis of the dielectric cylinder, the dielectric cylinder being fixed by being sandwiched between the first metal plate and the second metal plate.