Patent ID: 7686918

Claim:
A magnetron plasma processing apparatus comprising: an airtight processing chamber for accommodating therein a substrate to be processed; a gas supply unit for supplying a processing gas into the processing chamber; a gas exhaust unit for exhausting an inside of the processing chamber and setting the inside of the processing chamber in a vacuum state, the gas exhaust unit having a gas exhaust port formed at a lower part of the processing chamber; an upper and a lower electrode facing each other while having therebetween a processing space formed above the gas exhaust port inside the processing chamber, the lower electrode serving as a mounting table for mounting thereon the substrate to be processed; an electric field forming unit for forming an electric field by applying an electric power between the upper and the lower electrode, the electric field exciting the processing gas in the processing space to convert same into a plasma; a baffle plate interposed between the processing space and the gas exhaust port such that the plasma is confined in the processing space, wherein the baffle plate includes a main body having multiple through holes allowing the processing space and the gas exhaust port to communicate with each other and a mounting portion for mounting the main body in the processing chamber; and a magnetic field forming unit for forming a magnetic field, wherein the magnetic field includes central magnetic force lines running parallel to a top surface of the substrate mounted on the mounting table and magnetic force lines, which pass through the main body of the baffle plate and are tilted with respect to the central magnetic force lines, and wherein the main body of the baffle plate is disposed substantially parallel to the magnetic force lines passing therethrough.