Patent ID: 7771536

Claim:
A semiconductor substrate processing apparatus comprising: a processing vessel that defines a processing space therein; a transparent case made of quartz and disposed in the processing vessel, the transparent case including a cylinder portion and a top plate covering a top part of the cylinder portion; a heating element, contained inside the transparent case, to generate heat inside the transparent case for heating a substrate introduced into the processing space to a predetermined temperature; a heater plate mounted on an upper external surface of the top plate of the transparent case, to transmit the heat generated inside the transparent case to the substrate; a substrate holding member having an axis penetrating the top plate of the transparent case and the heater plate and projecting from an upper surface of the heater plate, the axis having a plurality of arm portions to hold the substrate at a position spaced from and opposite to the upper surface of the heater plate located below the substrate; and a rotational drive part configured to rotatively drive the axis of the substrate holding member.