PAD CONDITIONER FOR IMPROVING REMOVAL RATE AND ROUGHNESS OF POLISHING PAD AND CHEMICAL MECHANICAL POLISHING APPARATUS USING THE SAME

摘要

A pad conditioner may include a surface having a first region including a portion having relatively irregular shaped and friable polishing particles, and a second region including a portion having relatively regular shaped and tough polishing particles. The relatively regular shaped and tough polishing particles may be provided on the edge portion of the surface and the relatively irregular shaped and friable polishing particles may be provided on the center portion of the surface.