Patent ID: 11971657
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 15:
16. A method, comprising:
crosslinking portions of a photoresist layer disposed over a substrate by exposing the portions of the photoresist layer to actinic radiation; and
removing the crosslinked portions of the photoresist layer by applying a liquid composition to the photoresist layer,
wherein the liquid composition comprises a chelate selected from a group consisting of ethylenediamine-N,N′-disuccinic acid (EDDS), diethylenetriaminepentaacetic acid (DTPA), polyaspartic acid, trans-1,2-cyclohexanediamine-N,N,N′,N′-tetraacetic acid monohydrate, and combinations thereof.