Patent ID: 6610170
Filing Date: 2003-08-26
Classification: H01L,Y10T

Abstract:
A substrate holding structure for a vacuum processing apparatus, which comprises:a vacuum processing chamber; a gas introduction device; and a specimen table for loading a substrate in said vacuum processing chamber, wherein said substrate is held by electrostatic attraction force on said specimen table and a heat conduction gas is introduced between said substrate and said specimen table to control the temperature of said substrate, wherein said specimen table includes a ring-shaped protruded portion having a smooth surface disposed at a position corresponding to the periphery of said substrate and plural contact holding portions disposed between a position corresponding to the periphery of said substrate and plural contact holding portions disposed between a position corresponding to the center of said substrate and a position corresponding to the periphery of said substrate, and further includes an electrostatic attraction device for fixing said substrate by bringing said substrate into contact with said ring-shaped protrusion and said contact holding portions, wherein said electrostatic attraction device includes a dielectric substance affixed or formed on the surface of said specimen table including said ring-shaped protrusion and said contact holding portions and has a function of contacting the surface of said ring-shaped protrusion and said contact holding portions with the back surface of said substrate by electrostatic attraction force, wherein said contact holding portion has a through hole and a pin for pushing-up said substrate disposed in said through hole, and wherein a gas supply hole as the gas introduction device is disposed at a position remote from said through hole of said contact holding portion of said specimen table.