The refresh rate is an important parameter. The refresh rate of an LED display can be 1920Hz or 3840Hz. In the industry, this is called low and high refresh. What is the difference between LED display refresh rate ? What determines refresh rate? What is the impact on viewing? What is the correct refresh rate after LEDs have been spliced in a large LED screen?
What is the refresh rate of an LED display?
Also known as “visual refresh rate” or “refresh rate”, the refresh rate of LED displays is also called “refresh frequency”. The unit of measurement is Hz.
The LED display screen’s refresh rate is a good indicator of whether it is stable and flicker-free. The LED display with a higher refresh rate will have a more stable picture and less flicker. The better protection for the eyesight is achieved by increasing the refresh rate of the LED display.
What is the type of LED display refresh rate ?
There are generally three refresh rates available for full-color LED displays: 960Hz (low brush), 1920Hz (normal brush) and 3840Hz( high brush)
What does the refresh rate of an LED display relate to?
The LED driver chip is the most important component of an LED display. It has the greatest impact on the refresh rate.
The refresh rate of an LED display can only be increased by using a dual-latch driver chip. Dual-latch driver chips can increase the LED refresh rate. A high-end PWM chip with high-definition can increase the refresh rate to 3840Hz.
What is the difference between a normal brush LED display and a high brush LED display?
The human eye cannot distinguish an LED display if the refresh rate is greater than 960Hz. It is nearly impossible to tell the difference between high-brush LED displays and plain-brush full color LED displays when playing videos or pictures. However, you can distinguish these LED screens by using high-definition cameras, mobile phones, and video equipment.
When taking a picture with your mobile phone and using a screen that has a low brush, you will see water ripples on the screen, which will make it appear as if it is flickering. A high brush used LED screen does not show water ripples.
What is the recommended refresh rate of an LED display?
The refresh rate for an LED display is largely determined by the purpose of the LED screen and its environment. For an indoor full color LED display, a 1920Hz brush can be used. It is recommended that you use the 3840Hz high-brush if you plan to use your display for video and photos.
Water ripples on LED displays will generally not appear unless the refresh rate is more than twice the shutter speed of the camera. The dual-latch driver IC’s 1920Hz refresh rate and the cross-flow driver IC’s nearly 1000Hz refresh rate are insufficient to prevent water ripples at the common camera shutter speed of 1/2000 seconds. Water ripples can be avoided by using high-definition PWM driver ICs with a 3840Hz refresh rate or higher.
A movie with a 24Hz frame rate is played on an LED display that has a refresh rate of 3840Hz. This means there are 24 frames per second. A movie with a frame rate of 24Hz is shown on an LED display that has a refresh rate 3840Hz. 3840/24 =160 times. Each frame is updated 160 times. This refresh rate is so fast that the human eye can’t detect any screen flickering. The display will be smoother and have higher clarity.
Conclusion
While the LED refresh rate is important for stability and visual appeal the best rate depends on the usage scenarios and the desired visual outcome. Understanding these nuances helps in choosing the best LED display for your specific needs.