Patent ID: 8394232

Claim:
A plasma processing apparatus, which is an inductively-coupled-plasma processing apparatus, comprising: an antenna, substantially straight in a plan view of the antenna, wherein a plasma is generated for performing a plasma treatment to a substrate by applying a high frequency current to the antenna to induce an electric field in a vacuum container, and the antenna comprises: two rectangular conductor plates, disposed on a same plane along a surface of the substrate in a manner that the two rectangular conductor plates are parallel to each other with an interval therebetween, and an end of a side in a longitudinal direction of each of the two rectangular conductor plates is connected through a conductor so as to form a go-and-return conductor, wherein the high frequency current flows in the two rectangular conductor plates in opposite directions, wherein a plurality of notches is formed at the sides of the two rectangular conductor plates adjacent to the interval, the notches of the plurality of notches facing each other define an opening, and the plurality of notches forms a plurality of openings, and the plurality of openings is separately arranged in the longitudinal direction of the antenna.