Tips to enhance the picture quality of LED displays

It includes power supply, video encoder and solution code, line driver, digital signal processor (DSP) and so on. These subsystems work closely together to produce video images.

The end result for viewers is full-color video on a large screen with amazing high-definition image quality. While the crowd's cheers on a video replay shook the stadium, they had no idea what the VIDEO system's LED drivers were capable of.

If you look closely at the display, you'll see hundreds of individual video panels.

If you look a little closer, you'll see that each panel contains 16X16 pixels.

Each pixel is made up of three leds: red, green and blue.

The anode of each LED is electrically connected to the output of an LED driver.

Eventually, these tens of thousands of LED drivers control the forward current flowing through hundreds of thousands of leds to generate video images.

The challenge for electrical designers is to understand the best way to control LED current using LED drivers.

Most high-end LED drivers offer designers multiple ways to control the LED current in their system.

These drivers have features such as point correction (DC), pulse Width modulation (PWM) dimming and global Brightness control (BC) to help lower LED brightness.

Although these features all provide the same basic function of adjusting LED brightness, they are used differently.

Understanding how to use these features correctly is key to having the best quality video.