Patent ID: 9653367
Date: 2017-05-16
CPC Classifications: C23C,H01L

Claim:
1. A method, comprising: performing a spin coating process, said spin coating process comprising dispensing a set value of an amount of a photoresist fluid to a surface of a wafer to form a photoresist material on said surface of said wafer; after performing said spin coating process, the method further comprising: performing a defect analysis on the basis of said inspection of said edge area of said wafer in a control unit, said defect analysis comprising determining if said edge area of said wafer comprises a defect that is indicative of an insufficient coating of said surface of said wafer by said first fluid; adjusting said set value of said amount of said first fluid in said control unit on the basis of a result of said determining if said edge region of said wafer comprises a defect; and directing a second light from a second light source towards said edge area of said wafer while said wafer is rotated, wherein said second light renders a portion of said photoresist material at said edge of said wafer soluble in a subsequent development process, wherein said first and second light sources comprise different light sources.