Patent ID: 9108228
Filing Date: 2015-08-18
Classification: B08B,H01L

Abstract:
1. A liquid processing apparatus comprising: a first processing liquid supply unit including a first nozzle block provided with a first nozzle configured to selectively supply an acidic chemical liquid and a rinse liquid with a first switching operation to a substrate horizontally held and being rotated, and a first moving mechanism configured to move the first nozzle block between a first processing position above the substrate and a first retreat position next to the substrate; a second processing liquid supply unit including a second nozzle block provided with a second nozzle configured to selectively supply an alkaline chemical liquid and the rinse liquid with a second switching operation to the substrate, and a second moving mechanism configured to move the second nozzle block between a second processing position above the substrate and a second retreat position next to the substrate; and a control unit programmed to output a control signal to set the second nozzle to the second retreat position when the acidic chemical liquid is supplied to the substrate from the first nozzle, initiate to move the second nozzle to the second processing position when the first nozzle stops supplying the acidic chemical liquid to begin supplying the rinse liquid to the substrate, and to retreat the first nozzle to the first retreat position a processing position when the second nozzle is supplying the alkaline chemical liquid to the substrate, wherein each of the first nozzle and the second nozzle is configured such that the respective chemical liquid arrives at a same position on a surface of the substrate when the respective chemical liquid is ejected from each of the first nozzle and the second nozzle.