Patent ID: 11935738
Assignee: DISCO CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A method of processing a wafer having a plurality of devices formed on a face side thereof and having a beveled outer circumferential edge portion, the method comprising the steps of:
a holding step of holding the wafer rotatably along circumferential directions thereof with the face side facing upwardly;
a processing step of, after the holding step, processing the outer circumferential edge portion of the wafer by, while a lower end portion of an annular cutting blade that is rotating is cutting into the outer circumferential edge portion of the wafer, supplying a cleaning liquid to a center of the face side of the wafer and a rotating step of rotating the wafer to form a film of the cleaning liquid that covers the face side of the wafer; and
an ultraviolet ray applying step of, before the processing step, applying ultraviolet rays to the face side of the wafer to render the face side hydrophilic.