Taiwan and Korean are in fierce competition in the LCD panel industry and together dominate over 70% of the international market share. Business strategies in Taiwan rely on Original Equipment Manufacturers (OEMs) whereas Korea focuses principally on vertical integration, including development of its own international brand architecture. Taiwan is one of the world’s largest providers of LCD panel. In 1998, Taiwan accounted for only 1% of market share worldwide, but by 2002 its market share was over 30%. This study examines the causes behind Taiwanese LCD makers, CMI, AUO, growth and analysis their competitors (Korean makers). TFT-LCD manufactures’ strategies and activities help to develop a greater understanding. With respects to the Taiwanese LCD industry, many previous studies have concluded that the Taiwanese government played a major role in the initial stages of development. - Government support, Tax incentive - LCD manufacturer’s activities on marketing and cost effectiveness With regard to recent business movement between LCD manufacturers, strategic alliance is to be a popular way to enhance their competitiveness. But common alliance among same business fields is not good enough to be a market leader. Based on supply chain analysis and case study, intimate cooperation with other business field is proved as more powerful competitive strategic alliance. This new alliance will lead more efficient development lead time and productivity.