Fundamental Principle and Progrees in Organic Light Emitting Diode (OLED)

The development history, structure, working characteristics, methods of getting color display of OLED and its advantages/disadvantages, developing situation and trend have been reviewed. The performances of low molecular OLED and high molecular PLED, OLED and LCD have been compared in detail. Particularly the display principle of OLED was described in detail. Moreover, the structure of passive driving circuit and active driving circuit were summarized, and it is considered that the active driving OLED would be the terminal results. Finally, the development status of OLED both at home and abroad is described.