What are the "pixels" of an LED display?

“Pixel” is the smallest imaging unit that constitutes an LED display, also known as “dot” or “pixel point”. The pixel of the LED display is the smallest light-emitting unit on the display. One pixel of a monochrome display refers to a light-emitting diode; for a full-color LED display, 1R1G1B or 2R1G1B is a pixel.