Schematic of OLED (IMAGE) National Institutes of Natural Sciences Caption Fig. 1 (a) Schematic of the device structure and the operating mechanism of OLEDs. (b) Chemical structures. Credit NINS/IMS Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.