What do I need to pay attention to when using the LCD screen?

December 20, 2022

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1 should prevent the erosion of harmful gases


Liquid crystal and polarizer are organic substances. Chemical reaction and deterioration will occur in the harmful gas environment. Therefore, the use of harmful gases should take isolation measures. In addition, after the whole machine is assembled, it shall not be stored sealed for a long time to prevent the concentration of chemical gas generated by the plastic shell and circuit board cleaner from being too high and damaging the liquid crystal and polarizer.


2 should prevent stress extrusion


LCD is made of two pieces of glass, only 5-10 microns between them, very thin. Moreover, the inner surface of the glass is also coated with a layer of orientation film, which can be easily damaged. Therefore, the pressure on the surface of the LCD should not be too high, so as not to damage the orientation layer. If the pressure is too high or the device is pressed by hand during the assembly process, it needs to be left for one hour before powering on. Remember that there should be no drastic temperature changes during the power-on period. When the device is installed, the pressure should be even, only the edge of the device, not the middle, and the force should not be tilted.


3 DC voltage should be prevented


The smaller the DC component of the drive voltage, the better. If too much DC component is used for a long time, electrolysis and electrode aging will occur, thus reducing the service life.


4 UV radiation should be prevented.


Liquid crystal and polarizer are organic substances that undergo photochemical reaction and degradation under UV light irradiation. Therefore, when assembling liquid crystal display devices, according to the use of liquid crystal display devices and the use of the environment, consider whether to install anti-UV filters or use other anti-UV methods in front of the liquid crystal display devices. Avoid direct sunlight for a long time.