LED display screen quality directly affect the viewing effect, good quality and bad quality is also a major focus of attention, how to enhance the quality of the LED display screen, that is how to adjust the LED display brightness, clarity Is the industry people need to understand the technical knowledge. Here we learn to enhance the quality of LED display skills.
Outdoor LED full color display, LED electronic screen, two-color LED display screen quality should be from the overall brightness, the width of the screen, the screen position correction and other aspects to consider. Outdoor LED full color screen and LED electronic large screen and so require a large number of small subsystems, first of all, we first understand the composition of the next small sub-system.
Which includes power supplies, video encoders and demultiplexers, line drivers, digital signal processors (DSPs), etc., which cooperate closely to produce video images. For the audience, the end result is to have amazing high-definition image quality of the large screen full-color video. Although the audience cheering on a video playback to shake the entire stadium, but they do not understand the video system by the LED driver to achieve a lot of features.
If you look closely at the display, you will see hundreds of individual video panels. Close to the point, you will find that each panel contains 16X16 pixels. Each pixel consists of three LEDs: red, green, and blue. The anode of each LED is electrically connected to the output of an LED driver. Ultimately, these tens of thousands of LED drivers will control the forward current through hundreds of thousands of LEDs to generate video images.
The challenge for electrical designers is to understand the best way to use LED drivers to control LED current. Most high-end LED drivers provide designers with a variety of ways to control LED current in their systems. These drives have some features that help reduce LED brightness, such as point correction (DC), pulse width modulation (PWM) dimming, and global brightness control (BC). Although these features provide the same basic function to adjust the LED brightness, but their use is different. Understanding how to properly use these features is the key to having the best quality video.