Patent ID: 11887808
Assignee: AXCELIS TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A thermal electrostatic clamp apparatus, comprising:
an electrostatic clamping member configured to electrostatically clamp a workpiece thereto and to selectively heat a central region of the workpiece; and
a non-electrostatic member generally surrounding a periphery of the electrostatic clamping member, wherein the non-electrostatic member is configured to selectively heat a peripheral region of the workpiece, wherein a top-most surface of the non-electrostatic member faces the workpiece and is contiguous and planar about the peripheral region of the workpiece, and wherein the non-electrostatic member is not configured to electrostatically clamp the workpiece thereto.