Patent ID: 8043140

Claim:
A wafer polishing method, comprising the steps of: positioning one or more polishing liquid supplying members that are elongated in a widthwise direction extending in a radial direction from a central portion toward a peripheral edge portion of a polishing pad by an amount equal to about 79% of the diameter of an area of a wafer carrier head for holding a wafer being polished on the polishing pad in a state in which a lower end of the supplying member is close to or in contact with a polishing pad which polishes a wafer and relatively moving the polishing liquid supplying member against the polishing pad, the polishing liquid supplying member being formed of or a brush-like member which is formed by binding a plurality of thread-like members in series in the widthwise direction in order to make the polishing liquid uniformly flow down along the polishing liquid supplying member by an effect of capillarity; and supplying a polishing liquid to an upper portion of the polishing liquid supplying member so that the polishing liquid flows down along polishing liquid supplying member onto a surface of the polishing pad for polishing the wafer as the polishing pad is rotated.