> There aren’t any dyes in oleds. They emit photons directly at the correct wavelength. I meant the new blue PHOLED material. > If they yellow, it would be du

> There aren’t any dyes in oleds. They emit photons directly at the correct wavelength. I meant the new blue PHOLED material. > If they yellow, it would be due to different colors dimming at different rates or because there is a plastic protective/anti-glare coating, and it yellowed due to UV exposure. No it would be because red+green=yellow.