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Title:Time-based strategies for semiconductor manufacture and test
Author(s):Levitt, Marc Elliot
Doctoral Committee Chair(s):Patel, Janak H.
Department / Program:Electrical and Computer Engineering
Discipline:Electrical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Operations Research
Abstract:The world is a more competitive place than before, and time is a key component in any winning competitive strategy. This thesis provides methods by which companies can become more efficient time-based competitors in the semiconductor and computer businesses. Methods are presented in two very important areas, design and manufacture.
In the design area, the issues of test and design-for-test are examined since they are important and growing parts of the total design cycle. A productivity study is presented and, from the insight gained, models are developed to accurately predict important issues in test and design-for-test. The productivity models are then combined with economic models to achieve a complete life cycle picture of the integrated circuit that not only includes die economics but also time-to-market effects and quality issues. Examples are presented to demonstrate the use of the models.
In the manufacturing end of the semiconductor business, a method is developed that allows just-in-time techniques to be applied to fabrication areas. The technique consists of unraveling the job shop by concentrating on the bottleneck and/or critical workstations and then calculating the number of Kanban cards needed to control inventory and production. An extensive simulation-based evaluation of the method is presented, comparing it to many other techniques for three types of fabrication areas. These are: single bottleneck with no hot-lots, multiple bottlenecks with no hot-lots, and single bottleneck with hot-lots. In all cases the just-in-time method developed performs best overall.
Issue Date:1990
Rights Information:Copyright 1990 Levitt, Marc Elliot
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9114314
OCLC Identifier:(UMI)AAI9114314

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