Patent ID: 6610171
Filing Date: 2003-08-26
Classification: H01L,Y10T

Abstract:
A substrate holding structure for a vacuum processing apparatus, which comprises:a substrate electrode for loading a substrate; and a device for applying a high frequency voltage to said substrate electrode, in which the temperature of a substrate to be processed held on said substrate electrode in a vacuum processing chamber is controlled, said substrate holding device further comprises: a ring-shaped substrate holding portion with a diameter smaller than the outer diameter of said substrate disposed on said substrate electrode being protruded at the periphery of said substrate electrode for holding said substrate to said substrate electrode; other plural substrate holding portions disposed inward of said ring-shaped substrate holding portion for holding said substrate; a concave portion disposed on said substrate electrode between said other substrate holding portion and said ring-shaped substrate holding portion for forming a gap relative to the back surface of said substrate; an electrostatic attraction device for contacting to fix said ring-shaped substrate holding portion and said other substrate holding portion to the back surface of said substrate; and a device for supplying a heat conduction gas to said concave portion disposed on said substrate electrode, wherein said electrostatic attraction device includes a dielectric substance affixed or formed to the surface of said substrate electrode including said ring-shaped substrate holding portion and said contact holding portions, wherein a through hole is disposed in said other substrate holding portions disposed on said substrate electrode, the side of said through hole facing said substrate and the side opposite thereto are in communication with said vacuum processing chamber, allowing said heat conduction gas to leak from said through hole to said vacuum processing chamber in a state of holding said substrate, and wherein a push-up pin for receiving and transferring said substrate is disposed in said through hole, to suppress the pressure elevation in said through hole by leakage of said heat conduction gas from said through hole to said vacuum processing chamber, thereby preventing abnormal electric discharge between said through hole and said push-up pin.