Patent ID: 8968503
Filing Date: 2015-03-03
Classification: B32B,H01L,Y10T

Abstract:
1. A method for extending the lifetime of an electrostatic chuck, said chuck comprising a metal cooling plate and a first ceramic plate attached to said metal cooling plate by a bond, said method comprising: heating the electrostatic chuck to a temperature of less than about 200° C. to debond the first ceramic plate from the metal cooling plate after a period of use, wherein the metal cooling plate comprises a plurality of protrusions extending from a planar portion; providing a second ceramic plate, said second ceramic plate being unused; applying bonding material between the second ceramic plate and the metal cooling plate, wherein the bonding material is applied to the planar portion of the metal cooling plate up to the height of the protrusions, said bonding material being removable by a low-temperature process at about 200° C. or less; and solidifying the bonding material to form an electrostatic chuck comprising the metal cooling plate, the second ceramic plate and bond between the metal cooling plate and the second ceramic plate.