ELECTROCHEMICAL PLANARIZATION SYSTEM COMPRISING ENHANCED ELECTROLYTE FLOW

摘要

A polishing pad for an electrochemical planarization tool comprises a patterned surface that forms appropriate electrolyte flow channels for directing an electrolyte from the center to the periphery thereof. Consequently, a continuous electrolyte flow may be established, thereby significantly reducing the accumulation of contaminants in the polishing pad, thereby contributing to enhanced process uniformity so that frequent rinsing of the polishing pad and replacement of the electrolyte solution may be avoided.