Patent ID: 9623434
Date: 2017-04-18
CPC Classifications: B05C,G03F,H01L

Claim:
1. A substrate processing apparatus comprising: a substrate holding unit configured to hold a substrate in a horizontal direction to perform a liquid processing for a peripheral portion of the substrate by a chemical liquid; a rotation driving unit configured to rotate the substrate holding unit to perform the liquid processing while rotating the substrate held by the substrate holding unit in a horizontal direction; a first chemical liquid nozzle configured to discharge a first chemical liquid toward the substrate; a second chemical liquid nozzle configured to discharge a second chemical liquid toward the substrate, the second chemical liquid being different from the first chemical liquid; a first nozzle driving unit configured to move the first chemical liquid nozzle; a second nozzle driving unit configured to move the second chemical liquid nozzle; a cover member provided to face a top surface of the substrate through a space therebetween and cover the top surface of the substrate; a first liquid receiving portion provided below the first chemical liquid nozzle positioned at a first stand-by position and above the substrate, and configured to receive the first chemical liquid ejected from the first chemical liquid nozzle such that the first chemical liquid is prevented from being attached to the substrate; a second liquid receiving portion provided below the second chemical liquid nozzle positioned at a second stand-b position and above the substrate, and configured to receive the second chemical liquid ejected from the second chemical liquid nozzle such that the second chemical liquid is prevented from being attached to the substrate; and a control unit configured to control the first nozzle driving unit, the second nozzle driving unit, and whether the first chemical liquid and the second chemical liquid are discharged from the first chemical liquid nozzle and the second chemical liquid nozzle, respectively, wherein each of the first liquid receiving portion and the second liquid receiving portion is provided with an edge portion fixed to the cover member, the first nozzle driving unit moves the first chemical liquid nozzle between a first processing position where the first chemical liquid nozzle is disposed when the first chemical liquid is discharged toward the peripheral portion of the substrate and a first stand-by position where the first chemical liquid nozzle is disposed when the first chemical liquid is not discharged, the second nozzle driving unit moves the second chemical liquid nozzle between a second processing position where the second chemical liquid nozzle is disposed when the second chemical liquid is discharged toward the peripheral portion of the substrate and a second stand-by position where the second chemical liquid nozzle is disposed when the second chemical liquid is not discharged, the first stand-by position disposed above the substrate is set within the center side of the substrate compared to the first processing position where the first chemical liquid nozzle is disposed such that the cover member is interposed between the first chemical liquid nozzle and the substrate, the second stand-by position positioned above the substrate is set within the center side of the substrate compared to the second processing position where the second chemical liquid nozzle is disposed such that the cover member is interposed between the second chemical liquid nozzle and the substrate, and the control unit is programmed to control: