Method for conditioning polishing pads for the simultaneous double-side polishing of semiconductor wafers
AssigneeSiltronic AG
InventorJohannes Staudhammer
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AssigneeSiltronic AG
InventorJohannes Staudhammer
Estimating the term…
A method for conditioning polishing pads for the simultaneous double-side polishing of semiconductor wafer uses a double-side polishing device. The device has an annular lower polishing plate and an annular upper polishing plate, each covered with a polishing pad, as well as a rolling device for carrier disks. The method for conditioning polishing pads includes disposing at least one conditioning tool having external teeth and at least one spacer having external teeth in a working gap formed between the first and second polishing pad, where the thickness of at least one of the conditioning tools differs from the thickness of at least one of the spacers. At least one conditioning tool and one spacer are set, simultaneously, in a revolving movement about the axis of the rolling device and in rotation themselves so as to generate material abrasion of at least one of the polishing pads.
A method for conditioning polishing pads for the simultaneous double-side polishing of semiconductor wafers in a double-side polishing device having an annular lower polishing plate covered with a first polishing pad, an annular upper polishing plate covered with a second polishing pad and a rolling device for carrier disks, the lower polishing plate, the upper polishing plate, and the rolling device being mounted rotatably about collinearly arranged axes, the method comprising:
Dependencies are inferred from the claim text.