What is the refresh rate of LED large screen?

​​Refresh rate refers to the number of times the screen refreshes the image per second​, unit is Hertz (Hz). When the camera shoots the LED screen, if the refresh frequency of the two does not match, the video screen will have corrugated interference fringes. A case where a clear scanning line appeared on a live broadcast screen, resulting in an emergency adjustment of equipment parameters, fully demonstrating the importance of this parameter.

The matching relationship between refresh rate and shooting equipment

​​Camera frame rate determines the minimum refresh rate requirement​​：

• Normal mobile phone shooting (30 frames/second): ≥960Hz refresh rate required
• Professional camera (60 frames/s): ≥1920Hz refresh rate required
• High-speed camera (120 frames/s): ≥3840Hz refresh rate required

​​Real test data display​: When the screen refresh rate reaches 32 times the frame rate of the shooting device, the ripple phenomenon can be completely eliminated. A TV studio successfully solved the dynamic blur problem during shooting of 4K cameras by increasing the refresh rate of large screens to 1920Hz.

Refresh rate selection guide for three major scenarios

​​1. Commercial advertising scenarios​

• Outdoor fixed advertising screen: Starting at 1920Hz (for vehicle mobile shooting)
• Shopping mall interactive screen: ≥2560Hz (ensure the clarity of mobile phone shooting)

​2. Stage performance scenes​

• Concert home screen: 3840Hz (satisfies 8K ultra-slow motion playback)
• Floor tile interactive screen: 5120Hz (eliminates strobe under high-speed lens)

​​3. Sports venue scene​

• Fence advertising screen: 1920Hz (adapted to TV broadcasting standards)
• Event timing screen: 7680Hz (supports high-speed motion capture)

Three technical guarantees for eliminating shooting stripes

​​① Driver chip optimization technology​
Adopt 32bit driver IC chip,​Supports intelligent dynamic adjustment of refresh rate​, can automatically match the shooting device parameters. Through this technology, a command center of a science and technology park achieves seamless adaptation between surveillance cameras and LED large screens.

​② Breakthrough in low brightness and high gray technology​
In the brightness range of 800-1200cd/m²,Maintain a stable refresh rate of 3840Hz​, solve the contradiction between the inability to have both high brightness and low refresh rate during indoor shooting.

​​③ Full-process anti-stroke solution​​
From PCB circuit design to control system development,​ Establish 16 anti-interference barriers​. After laboratory tests, the probability of fringes appearing in 10,000 shutter shooting tests was less than 0.3%.

When choosing a large LED screen, you should not only pay attention to physical parameters, but also consider the dynamic performance in actual usage scenarios. Devices that can achieve intelligent adjustment of high refresh rate and brightness at the same time are the solutions that can truly stand the test of the lens.

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