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A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. A pixel is the smallest component of a digital image. Multitude of pixels come together to generate an image. In case of digital signage solution, apixel is nothing but a cluster of three LED bulbs red, green, and blue. Pixel pitch refers to the distance between two consecutive pixels the lesser the distance the better the display quality and resolution of the display.
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