Abstract: With the development of electronic technology, various types of display devices are developed. Flexible display devices become the new direction of display technology development. The advantages of devices are thin, flexible and easy to carry, so these devices develop rapidly and are introduced into many products recently. OLED display devices become the key technology of flexible display devices. This paper reviews the researching status of flexible display devices, and elaborates the important issues and trends of related research in the future.

Key words: organic light emitting, flexible display, OLED, flexible substrates