Patent ID: 9267739
Filing Date: 2016-02-23
CPC Classification: F28D,H01L

Claim Text:
1. A substrate support assembly comprising: a pedestal having a substrate support surface configured to support a substrate during a substrate processing operation; a stem attached to the pedestal opposite the substrate support surface, the stem having a first pair of stem internal channels configured to deliver and receive a first temperature controlled fluid to the pedestal and a second pair of stem internal channels configured to deliver and receive a second temperature controlled fluid to the pedestal; a first fluid channel within a first region of the pedestal to provide substantially uniform temperature control within the first region, the first fluid channel coupled at a first inlet to receive the first temperature controlled fluid from one of the first pair of stem internal channels, coupled at a first outlet to deliver the first temperature controlled fluid to the other of the first pair of stem internal channels, and including a first portion and a second portion between the inlet and the outlet, wherein the second portion is disposed vertically from and arranged in a parallel-reverse pattern with the first portion such that fluid received at the first inlet flows outwardly through the first portion prior to flowing to an outward section of the second portion and through the second portion inwards to the first outlet; and a second fluid channel within a second region of the pedestal to provide substantially uniform temperature control within the second region, the second fluid channel coupled at a second inlet to receive the second temperature controlled fluid from one of the second pair of stem internal channels, coupled at a second outlet to deliver the second temperature controlled fluid to the other of the second pair of stem internal channels, and including a third portion and a fourth portion between the inlet and the outlet, wherein the third portion is disposed vertically from and arranged in a parallel-reverse pattern with the fourth portion such that fluid received at the second inlet flows outwardly towards an outward section of the third portion prior to flowing to an outward section of the fourth portion and through the fourth portion inwards to the second outlet.