How field emission displays work Field emission displays, or FEDs, feature a sort of hybrid television technology. They use the electron guns of CRT sets and the layering of components found in LCD screens. Credit: Carbon Nanotechnologies Related stories: Carbon TVs to edge out liquid crystal, plasma? See all the Stranger Things season 3 photos so far: From Eleven in a scrunchie to shirtless Billy the lifeguard, take a look at all the images from the next season of the Netflix hit. Please stop leaving Apple AirPods in while having sex, people: Can you hear me now?