The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 1996
Filed:
Apr. 04, 1995
Wei-Heng Tai, Hsin-Chu, TW;
Yi-Chin Hsu, Taipei, TW;
Taiwan Semiconductor Manufacturing Company Ltd, Hsin-Chu, TW;
Abstract
This is a dynamic dispatching method for delivery performance by a factory. SLACK=(Due.sub.-- Date-Now)-(Forecast.sub.-- FAB.sub.-- Out.sub.-- Time); where Due.sub.-- Date=Scheduled due date from Master Production Schedule. The OTD (On Time Delivery) dynamic dispatching method focuses on the due date and the target cycle time under the environment of integrated circuit manufacturing. SLACK policy controls the long term due date and the OTD policy reflects the short term stage queue time. Through fuzzy theory, SLACK and OTD policies are combined as a dispatching controller to control the lot priority of the entire production line. The work piece, with either a long stage queue time, or with an urgent due date is pushed through the overall production line instead of jamming the front end of the process. A demand pull system satisfies the due date and the quantity of monthly demand.