Patent ID: 10923381

Abstract:
An electrostatic chuck device includes: an electrostatic chuck part which incorporates an internal electrode for electrostatic attraction and has a placing surface on which a plate-like sample is placed; a base part which cools the electrostatic chuck part; and an adhesion layer which bonds the electrostatic chuck part and the base part to integrate the parts together, in which a first through-hole is provided in the electrostatic chuck part, a second through-hole that communicates with the first through-hole is provided in the base part, a tubular insulator is fixed in the second through-hole, an annular sealing member is sandwiched between the electrostatic chuck part and a distal end surface of the insulator, wherein the distal end surface is located on the electrostatic chuck part side of the insulator, and a tubular insulating wall member is located at the inner side of the sealing member in the radial direction.