Patent ID: 8236109
Filing Date: 2012-08-07
Classification: H01J,H01L,Y10S

Abstract:
1. A method for cleaning a component in a substrate processing apparatus including a processing chamber, foreign materials being attached to the component, at least a part of the component being exposed inside the processing chamber, and the substrate processing apparatus being adapted to load and unload a foreign material adsorbing member into and from the processing chamber, the method comprising: loading the foreign material adsorbing member onto a mounting table in the processing chamber; generating from a plasma source a plasma nearer to the component than to the foreign material adsorbing member, said component disposed above the mounting table and between the mounting table and the plasma source, to thereby peel off the foreign materials from the component by sputtering of positive ions in the plasma, the peeled-off foreign materials being negatively charged by colliding with electrons in the plasma; extinguishing the plasma, wherein after extinguishing the plasma, the negatively charged foreign materials are adsorbed on the foreign material adsorbing member by an attractive electrostatic force between the negatively charged foreign materials and the foreign material adsorbing member; and unloading the foreign material adsorbing member from the processing chamber, wherein the generation and the extinguishment of the plasma are repeated alternately and the foreign material adsorbing member has a positive potential at least during the extinguishment of the plasma.