Abstract: The present invention relates to a plasma generating device, a method of cleaning a panel, and a method of manufacturing a display panel using the same. In the present invention, a pair of dielectric plates 52 and 52? are detachably installed to a nozzle head 50. To this end, an upper end of the dielectric plate 52 or 52? is inserted into a seating slit 49 formed in a lower portion of a chamber housing 46, and a lower end of the dielectric plate 52 or 52? is securely placed on and fixed to a stepped portion 59 formed in a lower end of an electrode cover 58. Further, in order to maintain a gap 53h between the dielectric plates 52 and 52?, spacers 64 are inserted in both ends of the gap 53h. According to the present invention so configured, uniform plasma can be generated since the gap between the dielectric plates can be kept constant. Further, the dielectric plates can be easily exchanged and maintained.