Patent ID: 8771461

Claim:
A plasma processing apparatus comprising: a processing chamber configured in a vertically two-divided configuration of an upper chamber and a lower chamber, the lower chamber having a substrate disposed therein; gas supply means for supplying a processing gas into the upper chamber; plasma generating means for forming a plasma from a processing gas supplied into the upper chamber; and voltage applying means for applying high-frequency voltage to the plasma generating means, the lower chamber having an inner space open at a top thereof, the upper chamber having an inner space open at a bottom thereof, said inner spaces communicating with each other, wherein the plasma processing apparatus further comprises an elevating board which is disposed horizontally and provided to be vertically movable and to which at least a part of members configuring the upper chamber are connected, elevating means for supporting and moving up and down the elevating board, and at least three fixing means, first, second and third fixing means, for fixing the upper chamber; the upper chamber is configured from at least an annular plate, wherein a lower surface on an outer peripheral side of which, is in contact with an upper portion of the lower chamber, a sidewall member which is formed in a hollow cylindrical shape and a lower end portion of which is placed on the annular plate, and a top plate which is placed on an upper end portion of the sidewall member; the elevating board has a vertically penetrating through hole having a size that the top plate can pass therethrough, and the elevating board is disposed at a position wherein the at least part of members configuring the upper chamber can pass through the vertically penetrating through hole in the vertical direction; the plasma generating means is disposed outside an outer periphery of the sidewall member in a radial direction and fixed on a lower surface of the elevating board; the first fixing means is configured to connect and fix the elevating board and the top plate from outside them and to be capable of releasing the connection and fixing from outside them; the second fixing means is configured to connect and fix the elevating board and the annular plate from outside them and to be capable of releasing the connection and fixing from outside them; and the third fixing means is configured to fix the annular plate to the lower chamber from outside them and to be capable of releasing the fixing from outside them.