Patent ID: 8055125

Claim:
A substrate stage mechanism configured to place a substrate thereon inside a process container of a substrate processing apparatus and having a substrate heating function for heating the substrate, the substrate stage mechanism comprising: a substrate table including a table base body configured to place the substrate on an upper surface of the table base body and a table heating element provided to the table base body and configured to heat the substrate; a tubular support member having one end connected to a lower surface of the table base body and another end attached to the process container; and a heating device disposed inside the support member and configured to heat a junction between the substrate table and the support member, wherein the heating device includes a sheath tube and a heat generation line contained in the sheath tube, and the sheath tube with the heat generation line is circulated along an inner surface of the support member at a position directly below the lower surface of table base body with a gap between the lower surface and the sheath tube.