Patent ID: 11868057
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC G  B  H | IPC B  G

Claim 17:
18. A substrate treatment apparatus comprising:
a holder configured to hold and rotate the substrate; and
an inner cup configured to surround the holder from a lateral side and having a peripheral edge side upper surface inclining down outward in a radial direction from an apex part located below a peripheral edge side of the substrate held on the holder, wherein:
the inner cup comprises:
a plurality of discharge ports formed along a circumferential direction at the apex part;
a storage chamber provided along the circumferential direction inside the inner cup, communicating with each of the discharge ports, and configured to store a cleaning solution; and
an introduction hole connected to the storage chamber and configured to introduce the cleaning solution to the storage chamber; and wherein:

the discharge ports are formed to discharge the cleaning solution and make the cleaning solution flow down along the peripheral edge side upper surface of the inner cup, thereby cleaning the peripheral edge side upper surface, and to discharge the cleaning solution outward in the radial direction and obliquely upward.