Patent ID: 8888951

Claim:
A plasma processing apparatus comprising: a processing chamber that plasma processes a target object therein, an upper electrode and a lower electrode that are provided in the processing chamber to face each other and have a processing space therebetween, and a high frequency power source that is connected to at least one of the upper electrode or the lower electrode to supply a high frequency power to the processing chamber, wherein the upper electrode includes: a base formed of a metal; a plate-shaped dielectric material provided at a central portion of a plasma-side of the base, the plate-shaped dielectric material being shaped as a plate without having a tapered edge; and a resistor provided between the plate-shaped dielectric material and the processing space and configured to make an impedance at a central portion of the upper electrode gradually larger than that at a peripheral portion of the upper electrode, the resistor being formed of a metal with a predetermined pattern and the resistor is not in contact with the plate shaped dielectric material; wherein the plate-shaped dielectric material is provided only at a central portion of the plasma-side of the base and the resistor is disposed substantially only within a region directly beneath the plate-shaped dielectric material.