OLED-T has demonstrated red, green and blue flexible single colour displays manufactured on a plastic substrate using its OLED materials. The demonstrator displays have been developed using a new family of materials developed by OLED-T that can be deposited by vacuum evaporation at manufacturing temperatures around 300oC. This relatively low temperature has enabled OLED-T to demonstrate flexible plastic OLEDs based on vacuum deposition for the first time.
OLED-T is now focussing research and development effort on encapsulation methods to improve the lifetime of its plastic devices. The lifetime of the initial demonstrator red devices was 60 hours at a luminance of 100 cdm-2 and 72 hours for green devices. The limited lifetime is due to high moisture permeability. The corresponding devices manufactured on a glass substrate have lifetimes in excess of 32,000 hours for the same device structure.
