Some customers asked how to do routine maintenance of LCD modules. As a professional LCD supplier in China, Xianheng has professional pre-sales and after-sales services. Today I will tell you how to use and maintain the TFT-LCD module.
1. The external leads of the LCD module cannot be connected incorrectly. Otherwise, overcurrent and overvoltage may damage the LCD module components.
2. When the LCD liquid crystal display module is used within the specified operating temperature range, the display response is very slow. When the liquid crystal display module is used above the specified operating temperature range, the entire display surface will be displayed as a full display state. This phenomenon is not that the module is damaged, but as long as the LCD module is restored to the specified temperature range, everything will return to normal. If the temperature is lower than the crystallization temperature, the liquid crystal will crystallize, destroy the alignment layer, and cause the device to be scrapped; if the temperature is too high, the liquid crystal will become an isotropic liquid, lose the liquid crystal state, and lose the function of the liquid crystal device.
3. The LCD module must be connected to the positive power supply (5+0.25V) before the input signal level when the power supply is connected or disconnected. If the input signal level is input before or after the power supply is stable, the module The IC circuit in may be damaged.
4. The contrast and viewing angle of the dot matrix LCD liquid crystal display module are closely related to temperature and driving voltage. Therefore, if the VEE is adjusted too high, it will not only affect the display, but also shorten the service life of the module.
5. When there are water droplets on the LCD screen, please wipe it quickly: long-term contact with water droplets will cause the screen to change color or appear spots.
6. Do not touch the IC on the PCB on the back of the LCD module to prevent short circuits between adjacent pins.
7. Pressing forcefully on the display part of the LCD screen will produce an abnormal display. At this time, cut off the power supply, wait a while, and re-energize, and it will return to normal.
8. When there are stains on the LCD screen, wipe it quickly with absorbent cotton or other soft cloth.
