Patent ID: 7682982

Claim:
A plasma processing apparatus, comprising: a lower electrode disposed in a processing chamber, capable of mounting an object to be processed thereon; an upper electrode disposed in the chamber to face the lower electrode; a first high-frequency power supply and a second high-frequency power supply for applying high-frequency powers to the lower electrode; and an output controller for raising respective outputs of the first and the second high-frequency power supply up to respective set levels for processing the object to be processed, wherein the output controller controls the respective outputs of the high-frequency power supplies to be raised stepwise in at least three steps, wherein the output controller regulates raise timings of the outputs of the respective high-frequency power supplies so that raising the output of the second high-frequency power supply is followed by raising the output of the first high-frequency power supply, and wherein the output of the first high-frequency power supply is higher than the output of the second high-frequency power supply.