Patent ID: 8733281

Claim:
A plasma processing apparatus comprising: a processing chamber produced from a metal; a susceptor configured to mount a substrate and installed in the processing chamber; an electromagnetic wave source that supplies an electromagnetic wave necessary to excite plasma in the processing chamber; one or more dielectric member provided on a bottom surface of a cover of the processing chamber, and configured to transmit the electromagnetic wave supplied from the electromagnetic wave source into an inside of the processing chamber, the bottom surface of the cover facing the susceptor; one or more metal electrode, wherein each metal electrode is installed on a bottom surface of each dielectric member such that a peripheral part of the each dielectric member is exposed to the inside of the processing chamber; and a metal cover facing the susceptor, the metal cover being installed adjacent to the dielectric member and on the bottom surface of the cover, and being exposed to the inside of the processing chamber, wherein a bottom surface of the metal cover and a bottom surface of the metal electrode are positioned on the same plane, the metal cover does not overlap with the dielectric member when viewed from inside of the processing chamber, and the metal cover and the metal electrode are formed of square shapes, and four sides of each of the metal cover and the metal electrode are surrounded by the part of the dielectric member exposed to the inside of the processing chamber.