LCD Encyclopedia

What causes LCD display flash screen?

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Update time : 2019-05-17 20:32:31
What causes LCD display flash screen? The reasons for LCD display flash screen include signal interference problem, or the high frequency of LCD display screen itself leads to the flash screen, or the similar frequency of LCD display screen and light source causes the flash screen.
 

1. What causes LCD display flash screen: Signal Interference Problem Display


In this case, check if the cable connecting the LCD has no shielding coil, and if there is no anti-interference black bump, it will also interfere with the screen. Also check if there is interference nearby, such as high-power audio, power transformer. LCD is easily disturbed by strong electric field or magnetic field. In some cases, the screen jitter is caused by the magnetic field or electric field near the LCD.
 

2. What causes LCD display flash screen: The high frequency of the LCD screen itself leads to the flash screen.


The high frequency of LCD display leads to flash screen. In general, there are few problems of device flash screen caused by high frequency in real life. People's naked eyes have no flickering sensation for pictures over 60 hz, and the design standard of general LCD display is basically maintained on this data, so under normal circumstances, there will be no excessive frequency, but at the same time, the screen itself can not be ruled out. After testing by relevant instruments, it is really the fault of the screen itself. In addition to replacing the new monochrome LCD screen, the software related to the device is designed. The best way is to increase the OSC frequency of IC and see the flicker of LCD screen. Of course, if the LCD display has separate row and column drivers, it can also be adjusted by setting the driver chip to solve the problem of flash screen.
 

3. What causes LCD display flash screen: The LCD display is similar to the light source frequency, which causes the flash screen.


It is very common that the LCD display screen flickers when the frequency of the light source is close to that of the light source. Because of the different frequencies of the different light sources, it is also common for the LCD display screen to flicker when the frequency of the light source is close to that of the artificial light source. The best way to do this is to use an artificial light source or an LCD display device to avoid the occurrence of the flicker screen.

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