Patent ID: 9165813
Filing Date: 2015-10-20
Classification: H01L

Abstract:
1. A semiconductor manufacturing apparatus member in which an electrostatic chuck having a wafer placement surface is disposed on a cooling device, the member comprising: a gas supply hole that extends through the cooling device from a joint surface of the cooling device that is joined to the electrostatic chuck to a surface of the cooling device that is opposite to the joint surface; an insulating bonding sheet that is disposed between the electrostatic chuck and the cooling device and has a through hole at a position facing the gas supply hole; a recessed portion that is formed in the electrostatic chuck from a surface of the electrostatic chuck that faces the gas supply hole toward the wafer placement surface, the recessed portion being connected to the gas supply hole; a narrow hole that extends through the electrostatic chuck from a bottom surface of the recessed portion to the wafer placement surface; an air permeable plug that is made of an insulating material and is fitted into the recessed portion; and an insulating adhesive layer that is disposed between the bottom surface of the recessed portion and the air permeable plug and has a through hole at a position facing the narrow hole, wherein the shortest distance from the narrow hole to the gas supply hole across the air permeable plug is larger than a thickness of the air permeable plug, and wherein the sum of the shortest distance from an edge of the through hole in the adhesive layer to an outer peripheral surface of the air permeable plug along the adhesive layer and the shortest distance from the outer peripheral surface of the air permeable plug to an edge of the through hole in the bonding sheet along the bonding sheet is also larger than the thickness of the air permeable plug.