Patent ID: 8741096

Claim:
An apparatus for semiconductor processing, comprising: a reaction chamber having a gate through which a substrate to be processed is transferred; a pair of shower heads disposed at an upper side of the reaction chamber, for spraying gas so as to perform semiconductor processing; a pair of wafer supporting units disposed at an inner lower side of the reaction chamber in correspondence to each of the shower heads, for supporting the substrate; a pair of processing space forming units disposed in the reaction chamber, for forming and sealing a processing space for semiconductor processing surrounding the shower head and the wafer supporting unit; a pair of exhausting systems respectively connected to the processing space forming units, wherein the exhausting system controls pressure and air exhaustion inside the reaction chamber and the processing space formed by the processing space forming unit; and a transferring unit provided between the wafer supporting units and the gate, for transferring a substrate to be processed to the wafer supporting units, or for carrying out a substrate having been processed through the gate; wherein the transferring unit comprises a pair of robot arms having one end connected to a rotation driving unit disposed at the reaction chamber, and another end reciprocatingly-rotating between the respective wafer supporting units and the gate, for transferring the substrate; wherein a cassette unit for loading a plurality of substrates is further disposed between the transferring unit and the gate; and wherein the pair of robot arms respectively transfer substrate to be processed from the cassette to the respective wafer supporting units, and the processed substrate from the respective wafer supporting units to the cassette.