The LCD screen is made of two pieces of glass with only 5~10um and very thin between them. And the inner surface of the glass is also coated with a layer of directional film, which is very easy to destroy. Therefore, we should also pay attention to the following points: the surface of the liquid crystal device can not add pressure too much to avoid the destruction of the directional layer. If the pressure is too large in the assembly process or the device is pressed by hand, the electricity should be reset after an hour. In the process of electrifying, there is no sharp change in temperature. The pressure should be uniform when the device is pressed, only the side of the device is pressed, the middle is not pressed, and the force can not be tilted.
LCD LCD screen is glass products, so, products in the assembly, and express delivery should be very attention, easily due to collision damage.
Cleaning treatment of liquid crystal display devices: because the surface of the liquid crystal is plastic polarizer and reflector, it should be avoided in assembly and storage. In addition, there is a protective film on the front polarizer, which is uncovered when it is used. If the device surface pollution dirty, can use soft fine cloth, cotton processing. If we must use solvent to wash, we should use isopropanol (glycerol), alcohol and freon, but not acetone and aromatic solvents, such as toluene, otherwise the polarizer on the device will be damaged.
If there is metal pin LCD, when welding pins, the solder joints should be at 4mm or farther away from the root, and they cannot be overloaded or overheated, so as not to damage the connection. The maximum temperature tolerance at the junction should not exceed 80 degrees C. No detergent can be used at the foot of the tube, because the detergent will decompose the chlorine gas in the sunlight, and then form hydrochloric acid after water absorption, thereby corroding the electrode.
LCD LCD screen should be to prevent erosion of harmful gas: liquid crystal and polarizer is organic chemical reaction, the harmful gases in the environment deterioration, so we should take isolation measures of harmful gases in use, also in the whole assembly is good, not for a long time to seal and store concentration to prevent plastic shell and circuit board cleaning agent to produce chemical gas excessive damage of liquid crystal and polarizer.
LCD LCD screen to prevent moisture from the device: liquid crystal display parts low voltage, micro power, liquid crystal material very high resistivity (up to more than 1X1010 omega). Therefore, due to the electrical conductivity of glass surface caused by moisture, it may cause "string" phenomenon in the display period of the device, so the design of the whole machine must consider moisture-proof. At ordinary times, try to place it at temperature 5~30 C and humidity 65%.
As the liquid crystal state disappears over a certain range of temperature, it must be preserved and used within a specified temperature range. The temperature is too high, the liquid crystal display is disappeared into a liquid, black, can not work, please note that this must not be energized, and lower the temperature to restore. If the temperature is too low, the liquid crystal to form ice, causing permanent damage. In addition, it is also stored at the limit temperature for a long time or by vibration and shock, and the LCD will also produce bubbles.