Patent ID: 8240649

Claim:
A wafer chucking apparatus for a plasma process, comprising: a lower plate, on which a plurality of wafers are loaded; and an upper plate, which is coupled to an upper portion of the lower plate and fixes the loaded wafers, wherein the upper plate has a rectangular shape so as to press the wafers, and is chamfered along upper edges thereof to form inclined faces, the lower plate includes a seat in which the wafers are placed, and a gas feed hole in a center thereof in order to feed gas to the seat, the seat of the lower plate includes at least one of an isothermal sheet and an isothermal coating layer, and the isothermal sheet includes one selected from Teflon-based resin, acryl-based resin, and polyimide-based resin at a thickness from 0.05 mm to 3 mm, and has an adhesive of silicon on one surface thereof.