LED Display Brightness Color Adjustment Tips

First, brightness adjustment

1, modulation pulse width (PWM), using the human eye can feel the change of frequency, using the pulse width modulation method to achieve gray control, that is, periodically change the light pulse width.

Pulse width modulation is more suitable for digital control, has been widely used, the most common method is to adopt microcomputer. At present, almost all LED displays adopt pulse width modulation to control the gray level.

2. Ordinary LED tubes allow the continuous task current to be around 20 mA. By changing the current flowing through the LED, the brightness of the LED is basically proportional to the current flowing through except for the saturation phenomenon of the red LED.

Second, color adjustment

LED hd display is installed light three primary color principle display.

Determine one red, green, and blue color as a benchmark is mainly according to the selection of product the brightness of the red, green, and blue color is different, generally as brightness benchmark is one of the low brightness scale, when the benchmark a has reached the maximum brightness, for double color LED display is the need to adjust another kind of color,

For the full color LED display, it is necessary to adjust the other two kinds of LED color.