Factors causing LCD screen flicker

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Factors causing LCD screen flicker [Copy link]

This content is originally created by EEWORLD forum user Rohm LCD Technology Station . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

We often encounter the phenomenon of LCD screen flickering, which is generally related to the following factors:
1. The frequency of the LCD display itself is too high, causing the screen to flicker. The screen
frequency is too high, which will cause the screen to flicker, but in reality this phenomenon rarely occurs. For screen flickering exceeding 60hz, it is not felt by the eyes. The display standard of general LCD screens is designed according to this parameter. If the screen itself fails, in addition to replacing a new LCD screen, the software related to the device must be designed. The best way is to increase the OSC frequency of the IC and see the flickering of the LCD screen. If the LCD screen has a separate driver, the problem of flickering can also be solved by adjusting the settings of the driver chip.

2. Signal interference problem
1. Check if the cable connecting the LCD monitor has a shielded coil. If there is no black protrusion for anti-interference, it will also interfere with the screen.
2. Check if there is any interference nearby (such as high-power audio, power transformers and other equipment). LCD monitors are easily interfered by strong electromagnetic fields. Sometimes screen jitter is caused by electromagnetic interference near the LCD monitor.
3. In order to eliminate interference around the LCD monitor, move the device to a place with empty space around it, restart the machine and test. If the screen jitter disappears, it means that there is electromagnetic interference in the original place of the device. Please remove the device that may interfere.
In the future, when babies encounter this kind of problem, remember the editor's method!