Patent ID: 7097550
Filing Date: 2006-08-29
Classification: B24B

Abstract:
1. A polishing pad, comprising: at least one groove in a polishing surface of the pad, wherein said at least one groove is formed in the polishing surface in such a manner that said at least one groove intersects a single straight line which is virtual and extends from a center portion toward a peripheral portion of the polishing surface, a plurality of times and has a width of 0.1 to 1.5 mm and a depth of 0.9 to 9.8 mm, wherein the shortest distance between adjacent intersections between said at least one groove with the straight line is 0.3 to 4.0 mm, wherein the ratio of the depth of said at least one groove to the thickness of the polishing pad is 1/7 to 1/1.1, and wherein a surface roughness of an inner wall of said at least one groove is 20 μm or less.