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

Claim 5:
6. The substrate processing apparatus of claim 5, wherein, 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, and
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 is installed 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 is installed to change a direction of the processing liquid ejected from the processing liquid nozzle such that the angle θ becomes a second angle closer to 90 degrees than the first angle when the gas is ejected from the gas nozzle.