In my opinion, LED panels are lighting fixtures. Each fixture is comprised of lit pixels. Each pixel contains individual Red, Green, & Blue light sources. For example, if you are using a 3.9 mm panel, in a 500mm x 500mm configuration, each panel will contain, 16,384 pixels, producing light from a much smaller R, G, & B pixel to reproduce the video signal being sent to the processors. In essence, there are 49,152 light sources reproducing a video signal on a single 3.9mm LED panel.