Patent ID: 6709544
Filing Date: 2004-03-23
Classification: B24B

Abstract:
A chemical mechanical polishing (CMP) equipment, comprising:a wafer holder for holding a provided wafer; at least one strip polishing platen, wherein one end of the strip polishing platen is fixed and the strip polishing platen can be rotated about a rotation axis at the fixed end with a rotating angle less than 360 degrees; a polishing pad arranged on the polishing platen; a robotic arm coupled to the strip polishing platen, wherein the robotic arm controls a rotation of the strip polishing platen and ensures the polishing pad on the strip polishing platen touching the provided wafer during polishing; and a slurry feeding system incorporated in the strip polishing platen to provide a polishing slurry between the polishing pad and the wafer for polishing, wherein the strip polishing platen is located above the wafer holder during polishing and the polishing pad on the strip polishing platen faces the wafer holder, while the wafer holder rotates the wafer independent of the rotation of the strip polishing platen, and wherein the strip polishing platen is seated in a resting position beside the wafer holder during resting.