Dynamic lot dispatching required turn rate factory control system and method of operation thereof
October 18, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAutomated re-work shop order scheduling system Device for production control and method for production control using the same Scheduling for multi-task manufacturing equipment Apparatus and method for controlling and scheduling processing machines Dynamic dispatching rule that uses long term due date and short term queue time to improve delivery performance Apparatus for control and evaluation of pending jobs in a factory Method and system for dynamic dispatching in semiconductor manufacturing plants Scheduling system and scheduling method for reentrant line processes Method of producing semiconductor wafer Output management of processing in a manufacturing plant InventorsApplicationNo. 735059 filed on 10/18/1996US Classes:700/100, Job scheduling257/E21.525, Procedures, i.e., sequence of activities consisting of plurality of measurement and correction, marking or sorting steps (EPO)700/121Integrated circuit production or semiconductor fabricationExaminersPrimary: Voeltz, Emanuel T.Assistant: Musgrove, Richard H. Attorney, Agent or FirmInternational ClassG06F 019/00AbstractIn a semiconductor manufacturing fabrication plant with production to-order type operation, hundreds of devices and various processes are managed. To provide short cycle time and precise delivery to satisfy customer expectations is a major task. A dispatching algorithm named "Required Turn Rate (RTR)" functions according to the level of current wafers in process (WIP) algorithm revising the due date for every lot to satisfy the demand from Master Production Scheduling (MPS). Further the RTR algorithm calculates the RTR of each lot based on process flow to fulfill the delivery requirement. The RTR algorithm determines not only due date and production priority of each lot, but also provides RTR for local dispatching. The local dispatching systems of each working area dispatch the lots by using required turn rate to maximize output and machines utilization. | |
