For the tft liquid crystal module, the simplest is the LCD screen plus the LED backlight board plus the PCB board and finally the iron frame. Its real function is very, very powerful, which is equivalent to the picture tube in CRT. For some matters that must be paid attention to when it is used, let us understand these relevant knowledge about the use of liquid crystal modules. Bar:
Some display components in power terminals, instrumentation, etc. are liquid crystal modules, and their status is equivalent to the picture tube in the CRT. The principle of the LCD screen is that the backlight components emit uniform light, and then the light is further transmitted to our eyes through the LCD screen. The function of the screen is actually to process the light according to the pixels to display the image.
1. Strictly prevent static electricity: The control and drive voltage in the module is a very low, low-power CMOS circuit, which can easily be broken down by static electricity. The breakdown by static electricity is a kind of damage that cannot be repaired. The human body may sometimes generate static electricity of up to tens of volts or hundreds of volts. Therefore, extreme care should be taken during assembly, operation and use, and static electricity must be strictly prevented.
Never touch the outer leads, the circuit on the circuit board and the metal frame by hand.
The soldering iron used for welding and the power tools used for assembly must be well connected to the ground and there is no leakage.
Static electricity may also be generated when the air is dry. Therefore, the humidity of our working environment should be kept above RH60%.
2. Handle the protective film: There will be a protective film on the surface of the finished module that has been installed, in order to prevent the customer from contaminating the surface of the display screen during assembly; the customer cannot remove it before the end of the assembly Tear off to avoid staining or damaging the surface of the screen.
3. Add gasket: It is best to add a gasket of about 0.1 mm between the module and the front panel. The panel should also be kept flat to avoid distortion of the panel after assembly and improve its anti-vibration performance.