Patent ID: 9490150
Filing Date: 2016-11-08
CPC Classification: H01L,H05B

Claim Text:
1. A substrate support, comprising: a first aluminum plate for supporting a substrate, the first aluminum plate having a plurality of heating elements embedded therein to provide a plurality of heating zones; a second aluminum plate disposed beneath and supporting the first aluminum plate; a third aluminum plate disposed beneath and supporting the second aluminum plate; a non-metallic ring disposed atop the first aluminum plate, wherein the non-metallic ring is fabricated from aluminum nitride (AlN) or aluminum oxide (Al a plurality of spacers having an upper portion disposed above a surface of the first aluminum plate, wherein the non-metallic ring and the plurality of spacers support the substrate above the first aluminum plate; and a non-metallic disk disposed proximate a center of the first aluminum plate, the non-metallic disk having an upper portion disposed above a top surface of the first aluminum plate and a shaft coupled to a bottom of the non-metallic disk, wherein the non-metallic disk, non-metallic ring, and the plurality of spacers support the substrate above the first aluminum plate, and wherein the shaft is disposed within a through hole formed in the first aluminum late.