Patent ID: 11217474

Abstract:
A non-vacuum, non-contact spinner wafer chuck including: a basal member including; a fastener receiver that receives a fastener; a chuck collar including: an inner collar wall; and an outer collar wall; and an engagement surface that: receives and engages a wafer; a wafer engagement cam including: an engagement face that engages the wafer; an index cam disposed on the chuck collar and comprising: an index face that faces toward the fastener receiver and that engages the wafer; and a spinner engager disposed on the spinner-side surface of the basal member and comprising: a spinner arm receiver bounded by a wall and that receives a spinner of the wafer processing machine, wherein the wafer engagement cam and the index cam engage the wafer and maintains an orientation of the wafer with respect to the index cam in response to rotation of the wafer relative to the non-vacuum, non-contact spinner wafer chuck.