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P‐58: Effective Order Assignment for Color Filter Fabs
Author(s) -
Chen James C.,
Chao Gary C.,
Sun ChengJu,
Chao KuoJung,
Chien JuiWei,
Chen ChihCheng,
Mo ChiNeng,
Peng TzuWei,
Wei YuYao,
Feng ChaoHsuan,
Liu YuChen,
Chiang MeiTsao
Publication year - 2009
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3256538
Subject(s) - tardiness , schedule , computer science , filter (signal processing) , process (computing) , production schedule , engineering , real time computing , scheduling (production processes) , job shop scheduling , operations management , operating system , computer vision
This research proposes an Order Assignment Policy (OAP) to effectively and efficiently assign orders to color filter fabs. The objectives of this research is to minimize order tardiness and minimize the variance of fab utilization by taking into account fabs ' available capacity and orders ' due date, batch size, product type, and process routing. OAP consists of three modules: Order Priority Module (OPM), WIP‐Pulling Module (WPM), and Order Release Module (ORM). OPM assigns different priorities to orders according different dispatching rules. WPM pulls WIP from the end of the process route to meet the orders in Master Production Schedule (MPS). If WIP cannot meet the MPS requirement, ORM is executed to select one of the fabs and release lots into this fab. An AutoMod simulation model is developed, and data of real color filter fabs are collected and used to evaluate OAP's performance based on the design of experiments. Preliminary simulation results show that the combination of OPM using Earliest Due Date (EDD) and ORM using Least Fab Utilization (LFU) leads to the least average lateness of orders, while OPM using Largest Batch Size (LBS) and ORM using LFU results in the least variance of fab utilization.