Patent ID: 8987639
Filing Date: 2015-03-24
Classification: H01L,H05B

Abstract:
1. A system for holding and heating a workpiece, comprising: an electrostatic chuck, having a first surface for supporting said workpiece clamped to said first surface and a second surface opposite said first surface, comprising an insulating layer and a dielectric layer, and wherein an electrically conductive pattern is embedded in a surface of said insulating layer; and one or more radiative heat sources proximate said second surface of said electrostatic chuck, emitting radiative heat within a predetermined frequency range, wherein said electrostatic chuck is comprised of a material that is optically transparent to at least a portion of said predetermined frequency range, wherein said electrically conductive pattern is a mesh formed of channels, with an electrically conductive material disposed in said channels, said channels spaced apart to provide a sufficiently large open area for said radiative heat to pass through, wherein the channels occupy less than about 20% of an area of said surface of said insulating layer.