Science Technology How OLEDs Work and Why They're Green (Video) By Jaymi Heimbuch Writer California Polytechnic State University, San Luis Obispo Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation. She is the author of The Ethiopian Wolf: Hope at the Edge of Extinction. our editorial process Twitter Twitter Jaymi Heimbuch Updated October 11, 2018 Migrated Image Share Twitter Pinterest Email Science Space Natural Science Technology Agriculture Energy Kodak's OLED digital photo frame at CES 2009 OLED display technology is becoming a reality. While they're mainly used in super expensive digital photo frames and cell phones, they'll soon be used in large televisions, lights, and more. If you want a run-down of OLED technology - what it is, how it works, how it's made, and where it's at in the market place, then you'll want to check out this great, informative video.