What is the reason for the TFT LCD screen flashing? How to handle it
2023-08-22
Author: HuiXingLong
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TFT LCD screens have a wide range of applications, such as in automotive products, industrial instruments, and other electronic devices. What should we do when the LCD screen always flashes during use, which affects people's use? What factors are causing the TFT LCD screen to flash?
1. The frequency of the screen itself is too high, resulting in flashing. However, in real life, it is rare for devices to flash due to excessive frequency. According to industry professionals, people's naked eye does not have a flickering sensation for images exceeding 60Hz, and the design standards of general LCD screens are basically maintained on this data. Therefore, under normal circumstances, there will not be a high frequency situation, but it does not exclude the screen itself from malfunctioning. However, after being tested by relevant instruments, it is indeed a malfunction of the screen itself. In addition to replacing the monochrome LCD screen with a new one, the best way is to design the software related to the device. The best way is to increase the OSC frequency of the IC and check the flashing status of the LCD screen. Of course, if the LCD screen has separate row and column drivers, it can also be adjusted by setting the driver chip.
2. The TFT LCD screen has a similar frequency to the light source, resulting in flickering. This situation is very common. Due to the different frequencies of different light sources, it is also common for LCD screens to flicker when the frequency is similar to that of artificial light sources in certain specific situations. The best way to do this is to use an artificial light source or LCD screen device to avoid flickering.
