Patent ID: 7958899

Claim:
A substrate cleaning apparatus, comprising: an ultrasonic wave applier which applies ultrasonic vibration to a liquid film at a first position on a substrate, the liquid film being made of a first cleaning liquid and covering at least a surface of the substrate; a supplier which supplies a second cleaning liquid in the form of drops to the liquid film at a second position on the substrate, which is on a path in which the ultrasonic vibration propagates within the liquid film, and which is different from the first position; and a controller which causes the supplier to supply the second cleaning liquid drops to the liquid film, so as to apply an additional vibration different from the ultrasonic vibration to the liquid film, while activating the ultrasonic wave applier to apply the ultrasonic vibration to the liquid film, wherein a relative positional relationship between the first position and the second position is adjusted so that the liquid film covers a substrate surface area which is on the opposite side of the second position from the first position.