Patent ID: 6910943

Claim:
A planarization apparatus, comprising: holding means for holding a workpiece, said holding means being detachably connected through a connecting part to a spindle for rotating said holding means, said holding means being separated from said spindle when said holding means is moved; grinding means which has a grinding wheel for grinding said workpiece and grinds one side of said workpiece; polishing means for polishing the one side of said workpiece, said polishing means comprising rotating means for rotating a polishing head and a positioning mechanism for setting an interval between said polishing head and said workpiece; moving means for moving said holding means between a grinding position for said grinding means and a polishing position for said polishing means, wherein said workpiece held by said holding means is ground into an extremely thin thickness close to a finished thickness, and is then polished while being still held by said holding means, wherein at least one of said grinding means and said polishing means removes a machining deteriorated layer formed at the one side of said workpiece ground in previous machining, or an unevenness of the thickness of said workpiece and the machining deteriorated layer formed at the one side of said workpiece ground in previous machining.