Patent ID: 11965237
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A system for detecting abnormality of a thin-film deposition process, comprising:
at least one sensor disposed in a thin-film deposition chamber which deposits a thin-film on a substrate by using a target; and
a controller, coupled to the at least one sensor and configured to:
control the at least one sensor to scan a dimension of each of a plurality of comb structures of a collimator mounted between the target and the substrate to derive an erosion profile of the target according to a change on the dimension of each of the plurality of comb structures after the thin-film deposition process;
detect abnormality of the thin-film deposition process by analyzing the erosion profile with an analysis model trained with data of a plurality of erosion profiles derived based on the dimension of each of the plurality of comb structures scanned under a plurality of deposition conditions comprising material and lifetime of the target, and a magnetic field and an electric field applied during the thin-film deposition process; and
stop the thin-film deposition process when the abnormality is detected.