OLED(Organic Light Emitting Diode), that has been expected as the next generation standard of FPD(Flat Panel Display), has excellent characteristics of wide color gamut, high contrast ratio of more than 1 million to 1, very fast response time and wide viewing angle, and it realizes very thin display module because of no need of backlight system. However, there are three critical problems that OLED must overcome to compete with LCD. First, TFT backplane technology for large glass substrate is required. The TFT must be stable enough and fabrication process must be simple. Second, OLED pattering technology for large glass substrate must be developed. Third, OLED driving technology must be improved to maximize OLED performance and to increase lifetime of the products. This paper will review the newest development trend of OLED technologies in Korea to overcome the above three problems and also to create new applications.
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