Patent ID: 9108231
Filing Date: 2015-08-18
Classification: B08B,H01L,Y10S

Abstract:
1. A liquid processing apparatus, comprising: a rotation holding unit configured to hold and rotate a substrate to be processed around a vertical shaft; a processing liquid supply unit configured to supply a processing liquid onto a target surface of the substrate held by the rotation holding unit; a first cup and a second cup configured to receive the processing liquid scattered from the substrate to guide the received processing liquid downwards; a first driving unit configured to elevate the first cup through a first elevating member between a processing position receiving the processing liquid scattered from the rotating substrate and a retracting position located lower than the processing position and to change a set value of an elevating speed of the first cup; a second driving unit configured to elevate the second cup through a second elevating member between a processing position receiving the processing liquid scattered from the rotating substrate and a retracting position located lower than the processing position and to change a set value of an elevating speed of the second cup; and a controller configured to output a control signal to the first driving unit and the second driving unit so as to ascend the first cup at a higher speed than the second cup such that the second cup is pushed up by the first cup while at least a portion of the first cup is overlapped with at least a portion of the second cup, thereby sealing a flow path formed between the first cup and the second cup, when the first cup and the second cup are ascended to the processing position from the retracting position at the same time.