Patent ID: 6866567
Filing Date: 2005-03-15
Classification: B24B,H01L

Abstract:
1. A chemical mechanical planarization (CMP) apparatus, comprising: a polishing pad configured to rotate; a carrier configured to hold a wafer to be polished; a conditioning pad arranged beside the carrier, the polishing pad being configured to move while rotating between being partially over the carrier and the conditioning pad to progressively being completely off of the carrier and completely over the conditioning pad; a slurry delivery unit, the slurry delivery unit being configured to apply slurry over the conditioning pad so that the polishing pad when rotating can apply the slurry between the wafer and the polishing pad; and a radiation source, the radiation source being configured to apply radiation to the slurry that is to be applied between the wafer and the polishing pad, wherein the slurry is irradiated without substantially increasing a temperature of the polishing pad.