Patent ID: 8163128

Claim:
A plasma processing apparatus, comprising: a chamber for containing a substrate to be processed; a gas supply unit for supplying a processing gas into the chamber; and a microwave introducing unit for introducing plasma generating microwaves into the chamber, the microwave introducing unit including: a microwave oscillator for outputting a plurality of microwaves having specified outputs; and an antenna section having a plurality of antennas to which the microwaves outputted from the microwave oscillator are respectively transmitted, wherein the microwave oscillator includes: a microwave generator for generating a low power microwave; a divider for dividing the microwave generated from the microwave generator into a plurality of microwaves; and a plurality of amplifier sections for amplifying respective microwaves divided by the divider to specified powers, wherein a plurality of microwaves outputted from the plurality of amplifier sections are respectively transmitted to the plurality of antennas, wherein each of the plurality of amplifier sections has an isolator for separating a reflected microwave, and wherein the antenna section includes a dividing plate dividing the plurality of antennas and blocking transfer of microwaves among adjacent antennas such that each of the antennas independently emits a microwave, and the dividing plate is a metal member.