Patent ID: 7827931

Claim:
A plasma processor electrode comprising: a supporting member arranged to face a supporting electrode for supporting a substrate to be processed; an electrode plate, mounted to the supporting member, for providing a processing gas through a plurality of gas injection holes into a processing space formed between the electrode plate and the supporting electrode, thereby generating a plasma in the processing space, the electrode plate including the gas injection holes and one or more receptacle parts opened toward the supporting member; and fastening means for combining the electrode plate with the supporting member by screwing into a tapped hole provided in each receptacle part of the electrode plate from a side of the supporting member, wherein each receptacle part does not include an opening on a surface of said electrode plate opposite to a surface facing said supporting member, wherein each receptacle part includes an opening that opens toward the supporting member, and wherein a socket that includes the tapped hole is accommodated in each receptacle part such that the tapped hole opens toward the opening, and wherein a holder including two members is provided within each receptacle part, and the two members form a receptacle space in which the socket is accommodated.