| 摘要 |
Provided is a plasma treatment device characterized by comprising a treatment container having its ceiling portion opened to make its inside evacuative, a table disposed in the treatment container for placing an object to be treated thereon, a top plate mounted gastight in the opening of the ceiling portion and made of a dielectric material for transmitting microwaves, gas introducing means for introducing a necessary gas into the treatment container, a planar antenna member disposed on the upper face of the central portion of the top plate and having a microwave irradiating slot formed therein for introducing the microwaves of a predetermined propagation mode into the treatment container, a slotted waveguide mounted on the upper face of the peripheral portion of the top plate and having a microwave irradiating slot formed therein for introducing microwaves of a propagation mode different from that of the microwaves introduced by the planar antenna member, into the treatment container, and microwave feeding means for feeding the microwaves to the planar antenna member and the slotted waveguide. |
