LED display is a kind of flat panel display, which consists of small LED module panels and is used to display various information such as text, images, videos and video signals.

LED？ , light emitting diode (short for light emitting diode). It is a diode made of gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and indium (In) by controlling the display mode of a semiconductor light-emitting diode. When electrons and holes recombine, they can emit visible light, so they can be used to make light-emitting diodes. Used as an indicator light in circuits and instruments, or as a text or digital display. Gallium arsenide phosphorescent diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and indium gallium nitride diodes emit blue light.