Patent ID: 7727488

Claim:
A plasma generating electrode comprising: two or more electrodes disposed to face each other, each of the electrodes having both a fixed end portion and a free end portion; holding members for holding the electrodes at a predetermined interval, and capable of generating plasma by applying voltage between the electrodes; and a connection terminal for electrical connection to the fixed end portions of the electrodes, wherein a main component of the connection terminal is metal having a thermal expansion of coefficient of 7×10 −6 (1/K) at 0 to 600° C. or less; wherein at least one of the electrodes facing each other has a plate-shaped ceramic body serving as a dielectric body and a conductive film disposed inside the ceramic body, the holding members fix the fixed end portions of the electrodes facing each other in the state of a cantilever in such a condition that the electrodes are held by the holding members in the state of cantilevers of the different directions alternately at a predetermined interval as a whole, and the holding members have a large number of first groove portions to insert the free end portions opposite to the fixed end portions of the electrodes therein with a predetermined gap on each surface opposing to the free end portions.