The method of calculating the brightness of the LED display

The brightness of the LED display is assembled by the brightness of each LED.

Let’s have an example:

For a P16 display with 1R1G1B lamp LED and 1/2 scan mode, there are 3906 dots in 1m2. Let’s say the brightness of red LED is 800mcd; green is 2300mcd; blue is 350mcd. Then the brightness for 1m2 in theory is (800+2300+350) *3906/1000/2=6737.85cd/m2.

How to calculate the pixel brightness if we know the brightness and the density of pixels of the display?

The brightness of the red LED: brightness cd per m2 / pixels per m2 * 0.3

                               green LED: brightness cd per m2 / pixels per m2 * 0.6

                                 blue LED: brightness cd per m2 / pixels per m2 * 0.1

Example:

A display with 10000 pixels/m2, SMD, brightness 6000cd/m2,

Then the brightness of each LED:

Red: 6000/10000*0.3=0.18 cd

Green: 6000/10000*0.6=0.36 cd

Yellow: 6000/10000*0.1=0.06 cd

The brightness of each SMD LED=0.18+0.36+0.06=0.66cd.