Patent ID: 6520835
Filing Date: 2003-02-18
Classification: B24B

Abstract:
A polishing system for polishing a surface to be processed of an object to be processed by sequentially displacing, on said surface to be processed, a region to be polished at which a polishing surface of a polishing pad is in contact with said surface to be processed of said object to be processed, said polishing system comprising:a holding means having a holding surface for holding an object to be polished; a polishing pad having a polishing surface for polishing a surface to be polished of said object to be polished; a rotating means for rotatably holding said polishing pad, relatively pressing the polishing surface of said polishing pad on the surface to be polished of said object to be polished to create a polishing pressure, and rotating said polishing pad, said rotating means including a first driving portion for displacing, at said region to be polished, each portion of said polishing surface relative to said surface to be processed at a specific reference velocity or more; and a second driving portion for displacing, at said surface to be polished, said region to be polished at a reference velocity or less; a moving means for relatively moving, along a plane, the surface to be polished of said object to be polished and the opposing surface of said polishing pad in sliding contact with each other; a pressing force detecting means for detecting a relative pressing force applied from the polishing surface of said polishing pad to the surface to be polished of said object to be polished by said rotating means; and a pressure control means for outputting a control signal to said rotating means on the basis of a detection signal supplied from said pressing force detecting means so that the polishing pressure generated at said object to be polished becomes a specific value.