Patent ID: 11915944
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. The substrate processing method of claim 12, further comprising:
decreasing a third collision angle continuously or in stages while moving the nozzle form an inner side of the substrate in the diametrical direction toward an outer side of the substrate in the diametrical direction thereof,
wherein the third collision angle is an angle formed by the top surface of the substrate and a straight line, when viewed from a direction of a tangent line of a circle centered on a center point of the top surface of the substrate at a collision point of the fluid on the top surface of the substrate, connecting the intersection point and the collision point, and
the third collision angle decreases as the collision point is more deviated from a directly-under point on the top surface of the substrate directly under the intersection point outwards in the diametrical direction of the substrate.