Patent ID: 11935739
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 16:
17. The substrate processing method of claim 16, wherein ejecting the gas comprises spraying the gas to the processing liquid ejected from the ejection port of the processing liquid nozzle before the processing liquid arrives at the liquid arrival point on the substrate, to change a direction of the processing liquid, and
when a circle, which is centered on a foot of a perpendicular line drawn from the liquid arrival point to the rotation axis and has a radius corresponding to a line segment connecting the foot and the liquid arrival point, is defined to be located on a plane orthogonal to the rotation axis,
when an angle formed between a straight line, which connects a foot of a perpendicular line drawn from the ejection port of the processing liquid nozzle to a surface of the substrate and the liquid arrival point, and a tangential line of the circle at the liquid arrival point is an angle θ,
the processing liquid nozzle ejects the processing liquid such that the angle θ becomes a first angle smaller than 90 degrees when the gas is not ejected from the gas nozzle, and
the gas nozzle ejects the gas so as to change the direction of the processing liquid such that the angle θ becomes a second angle closer to 90 degrees than the first angle.