Patent ID: 8291581

Claim:
A method of producing an electrode for a plasma processing apparatus, said electrode being provided with gas emission holes and installed in a plasma processing apparatus used to generate plasma in a plasma generation container by application of high frequency voltage, comprising: a step of forming reference holes in a surface of a first substrate made of a first material; a step of fitting columnar members in said reference holes, respectively, and disposing said columnar members in said first substrate in such a manner that at least a part of each of said columnar members projects from said surface of said first substrate; a step of forming an electrode surface layer made of a second material on said surface of said first substrate in such a manner that an end portion of each of said columnar members is exposed at a surface thereof; and a step of removing at least said columnar members to obtain, as said electrode, a substrate provided with first through holes each having a cross section matching a sectional shape of a projecting portion of each of said columnar members in said electrode surface layer and an inner diameter smaller than an inner diameter of each of said reference holes.