Abstract
ABSTRACT When Taiwan Semiconductor Manufacturing Company (TSMC) established in 1987, integrated device manufacturers are not only solution for semiconductor supply chain. The combination of IC design house and foundry company are new alternative solution. During semiconductor business cycle downturn of 2001 and 2008, IDM companies suffer the assets lower utilization. Besides, the more advanced technology, the more RD cost and factory equipment and facility investment. With the billions US dollars capitals, semiconductors still loss during downturn. It is time to consider more aggressive assets light strategy for IDM companies. Except transform to pure IC design house, how many other strategies that IDM companies can do? . Keywords：Semiconductor Industry、Wafer Generation、 Assets Light Strategy、Semiconductor Business Cycle、Porter’s Five Competitive Forces、Cost Analysis。