Patent ID: 9642238
Date: 2017-05-02
CPC Classifications: H01J,H05H

Claim:
1. A plasma generating device comprising: a vacuum container; a dielectric unit disposed at a part of the vacuum container; and an antenna structure for plasma generation disposed on the dielectric unit comprises, wherein the antenna structure includes four induction antennas which have the same structure, are connected in parallel with one another, and are disposed to be overlapped, wherein the induction antennas comprises: an external upper section disposed on a first quadrant of a first layer; an internal upper section connected to the external upper section and disposed on a second quadrant of the first layer; an internal lower section connected to the internal upper section and disposed on a third quadrant of a second layer disposed at a lower part of the first layer; and an external lower section connected to the internal lower section and disposed on a fourth quadrant of the second layer, and wherein one ends of the external upper sections are supplied with an RF power and the other ends of the external lower sections are grounded.