The primary difference between a common LED matrix and an OLED display is the large, low-resolution dots. The refresh rate is typically fast enough to prevent the human eye from detecting the flicker. Multi-colored LEDs or RGB-colored LEDs permit use as a full-color image display. ![]() By varying the pulse rate per LED, the display can approximate levels of brightness. By multiplexing, scanning across rows, quickly flashing the LEDs on and off, it is possible to create characters or pictures to display information to the user. By controlling the flow of electricity through each row and column pair it is possible to control each LED individually. It consists of a 2-D diode matrix with their cathodes joined in rows and their anodes joined in columns (or vice versa). If you are using ESP and Arduino Devices:Īn LED matrix or LED display is a large, low-resolution form of dot-matrix display, useful both for industrial and commercial information displays as well as for hobbyist human-machine interfaces.
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