Patent ID: 11869797
Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. An electrostatic chuck comprising:
a base plate that is made of a metal;
a ceramic plate that is fixed to the base plate and configured to adsorb an object by electrostatic force; and
a bonding layer that is provided between the base plate and the ceramic plate to bond the base plate and the ceramic plate to each other, wherein the bonding layer is formed of a composite material including the metal forming the base plate and a ceramic forming the ceramic plate,
wherein the bonding layer is formed such that a composite ratio of the ceramic to the metal in the composite material increases as the bonding layer approaches the ceramic plate along a thickness direction of the bonding layer.