eBrief: Pixel Pitch
Pixel pitch, along with display size, relates directly to the image resolution of a display. LED displays are comprised of light-emitting diodes (LEDs) grouped into clusters, known as pixels.
Pixels are the basic building block of any content, as they are the smallest addressable element in a raster image. With enough pixels in a given space an image can be created. The closer those pixels are to each other the more pixels the space will have, and therefore the higher the resolution of the image.