This presentation discusses organic light emitting diodes (OLEDs). It provides a brief history of OLED development from 1987 to 2003. The key components and working principle of an OLED are described. The presentation outlines the advantages of OLEDs such as low power consumption, flexibility, high contrast and large viewing angles. Applications of OLEDs include use in TVs, monitors, phones and more. The future scope of OLED technology is seen to include transparent, flexible and low-energy displays and lighting.