Patent ID: 8058586

Claim:
A plasma treatment apparatus which performs a plasma treatment on a plate-shaped work, the work having a first region to be subjected to the plasma treatment to produce products or parts and a second region other than the first region, the plasma treatment apparatus comprising: a first electrode; a second electrode provided so as to face the first electrode via the work so that a space is formed between the second electrode and the work; a gas supply unit which supplies a gas into the space; a power circuit having a power source which applies a high frequency voltage across the first and second electrodes so that the gas supplied into the space is converted into a plasma; and a support unit provided between the first electrode and the work, the support unit including a frame member which is formed from a plate-shaped member having a middle portion and an opening portion formed at the middle portion of the plate-shaped member, wherein the frame member has a concave portion for receiving at least a part of the second region of the work, and wherein the frame member is spaced apart from the first electrode so that the work is spaced apart from the first electrode in a distance at which discharge does not occur between the first region and the first electrode when the high frequency voltage is applied across the first and second electrodes.