Patent ID: 8051548
Filing Date: 2011-11-08
Classification: H01L,H02N,Y10T

Abstract:
1. A method of manufacturing an electrostatic chuck apparatus which comprises a metal base and an electrostatic chuck; wherein the metal base has a gas supply path formed in the inside of the metal base and a plurality of gas supply path outlets from the gas supply path to the upper surface of the metal base, and the electrostatic chuck has a lower insulating layer, an attracting electrode, and an upper insulating layer which are formed in order from the bottom on an upper surface side of the metal base, and wherein the electrostatic chuck has a plurality of through holes in which each upper end is opening to the surface thereof and each lower end is communicating with the gas supply path through each of the gas supply path outlets for supplying cooling gas supplied from a lower surface side of the metal base to a back surface of a substrate attracted to the upper insulating layer side through the gas supply path provided to the metal base; the method comprising: a first step of blocking the gas supply path outlets on the upper surface side of the metal base with an adhesive containing a filler made of the same material as that of the ceramic powder that is used for forming the lower insulating layer; a second step of forming the lower insulating layer by thermal spraying of a ceramic powder onto the upper surface side of the metal base, after blocking the gas supply path outlets of the metal base; a third step of forming the attracting electrode, after forming the lower insulating layer; a fourth step of forming the upper insulating layer, after forming the attracting electrode; and a fifth step of forming the through holes from the upper insulating layer side toward the gas supply path outlets of the metal base in which each lower end is communicating with the gas supply path, after forming the upper insulating layer.