Patent ID: 9082804
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. A clamp for handling a substrate, comprising: a top layer, made of non-conductive material; a gas source; a conduit embedded in said clamp adapted to carry gas from said gas source to said top layer, wherein a sidewall of said conduit is made of a conductive material; an outer sealing ring, surrounding said top layer and extending above said top layer for supporting the substrate a distance above said top layer; an outer conductive ring disposed on the outer sealing ring, the outer conductive ring and the outer sealing ring each having a surface in direct contact with the substrate, the outer conductive ring and the outer sealing ring being the only portions of the clamp configured to engage the substrate; and a first conductive material deposited on said top layer between said outer conductive ring and said sidewall of said conduit, wherein said sidewall is in communication with ground.