Patent ID: 6910956

Claim:
A wafer grinding apparatus comprising: a wafer-transporting device for transporting a wafer comprising: at least a suction pad having a first surface and a second surface, the second surface being flexible for sucking the wafer; and a transporting mechanism connected to the first surface of the suction pad for transporting the wafer; at least a first table and a second table for situating the wafer, wherein the wafer-transporting device is utilized for moving the wafer from the first table to the second table; at least a parking region for parking the suction pad; a first nozzle for ejecting a first liquid to the first surface of the suction pad for cleaning the first surface; and a second nozzle for ejecting a second liquid to the second surface of the suction pad and the wafer for cleaning the second surface and the wafer; wherein when the suction pad stays in the parking region, the first surface and the second surface of the suction pad are cleaned respectively by the first nozzle and the second nozzle, and wherein when the suction pad passes through the parking region, the first surface of the suction pad and the wafer are cleaned respectively by the first nozzle and the second nozzle.