Reducing wafer delay time by robot idle time regulation for single-arm cluster tools
Nowadays, wafer fabrication in semiconductor manufacturing is highly dependent on cluster
tools. A cluster tool is equipped with several process modules (PMs) and a wafer handling …
tools. A cluster tool is equipped with several process modules (PMs) and a wafer handling …
Modeling, analysis and control of dual-arm cluster tools with residency time constraint and activity time variation based on Petri nets
Because of residency time constraints and activity time variation of cluster tools, it is very
difficult to operate such integrated semiconductor manufacturing equipment. This paper …
difficult to operate such integrated semiconductor manufacturing equipment. This paper …
Wafer sojourn time fluctuation analysis of time-constrained dual-arm cluster tools with wafer revisiting and activity time variation
A robotic cluster tool involves many activities whose time is subject to some disturbance,
thus leading to the activity time variation. It results in wafer sojourn time fluctuation in a …
thus leading to the activity time variation. It results in wafer sojourn time fluctuation in a …
Wafer delay analysis and control of dual-armed cluster tools with chamber cleaning operations
As the design of integrated circuits has become increasingly complicated and dense,
serious wafer quality problems are observed in modern wafer fabrication facilities …
serious wafer quality problems are observed in modern wafer fabrication facilities …
Post-processing time-aware optimal scheduling of single robotic cluster tools
Integrated circuit chips are produced on silicon wafers. Robotic cluster tools are widely used
since they provide a reconfigurable and efficient environment for most wafer fabrication …
since they provide a reconfigurable and efficient environment for most wafer fabrication …
Feedback control of cluster tools for regulating wafer delays
Robotized cluster tools for semiconductor manufacturing have strict time constraints such
that a wafer processed at a processing chamber should be unloaded within a specified time …
that a wafer processed at a processing chamber should be unloaded within a specified time …
Scheduling transient processes for time-constrained single-arm robotic multi-cluster tools
Multi-cluster tools are highly productive yet expensive wafer fabricating facility in
semiconductor industry. Current competitive business trend requires high-mix and low …
semiconductor industry. Current competitive business trend requires high-mix and low …
Optimal cyclic scheduling of wafer-residency-time-constrained dual-arm cluster tools by configuring processing modules and robot waiting time
J Wang, C Liu, MC Zhou, T Leng… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Optimal cyclic scheduling problems of wafer-residency-time-constrained dual-arm cluster
tools in wafer fabrication are challenging and remain to be fully solved. Existing studies …
tools in wafer fabrication are challenging and remain to be fully solved. Existing studies …
Petri net modeling and scheduling of a close-down process for time-constrained single-arm cluster tools
In wafer fabrication, a robotic cluster tool is required to be closed down in order for
engineers to perform its on-demand and preventive maintenance and switch between …
engineers to perform its on-demand and preventive maintenance and switch between …
Petri net-based scheduling of single-arm cluster tools with reentrant atomic layer deposition processes
For some wafer fabrication processes in cluster tools, eg, atomic layer deposition (ALD),
wafer revisiting is required. Typically, in such processes, wafers need to visit two …
wafer revisiting is required. Typically, in such processes, wafers need to visit two …