Patent ID: 9257313
Filing Date: 2016-02-09
CPC Classification: H01L

Claim Text:
1. A substrate processing apparatus, comprising: a plurality of substrate processing units each configured to perform a substrate processing by supplying a processing liquid to a substrate disposed on a substrate disposing part; a positioning mechanism provided in each of the plurality of substrate processing units and configured to contact a side of the substrate disposed on the substrate disposing part to determine a position of the substrate while the substrate is disposed on the substrate disposing part; a positioning driver configured to drive the positioning mechanism; a detector provided in each of the plurality of substrate processing units and configured to detect a position of the positioning mechanism while the substrate is disposed on the substrate disposing part; a storage unit provided corresponding to the plurality of substrate processing units and configured to store a position of the positioning mechanism with respect to a reference substrate as a reference position; an operator provided corresponding to the plurality of substrate processing units and configured to calculate a difference between the reference position of the positioning mechanism of each of the plurality of substrate processing units stored at the storage unit and a detected position of the positioning mechanism detected in the detector of each of the plurality of substrate processing units while the substrate is disposed on the substrate disposing part of each of the plurality of substrate processing units, and configured to calculate a diameter of the substrate and a correction value based on the difference between the reference position of the positioning mechanism stored at the storage unit and the detected position of the positioning mechanism; a transmitter provided corresponding to the plurality of substrate processing units and configured to transmit the diameter of the substrate and the correction value calculated in the operator to the substrate processing unit after the operator calculates the diameter of the substrate and the correction value; and a positioning driving controller provided corresponding to the plurality of substrate processing units and configured to receive the diameter of the substrate and the correction value transmitted from the transmitter in order to move the substrate by controlling the positioning driver such that a center of the substrate coincides with a center of the substrate disposing part, wherein each of the plurality of substrate processing units further comprises: a nozzle configured to supply the processing liquid to the substrate; a nozzle driver configured to move the nozzle along a surface of the substrate; and a nozzle driving controller programmed and configured to receive the diameter of the substrate and the correction value transmitted from the transmitter and move the nozzle to a predetermined position based on the diameter of the substrate and the correction value received by controlling the nozzle driver such that the nozzle is fixed to the predetermined position from a periphery area of the substrate before the substrate processing begins, wherein each of the plurality of substrate processing units performs the substrate processing by discharging the processing liquid from the nozzle to the substrate while the position of the nozzle is being fixed to the predetermined position from the periphery area of the substrate being rotated on the substrate disposing part with the center of the substrate coincides with the center of the substrate disposing part.