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LCD Modules Handling Precautions
2011-09-19 by seoer

LCD is liquid crystal display module and control, drive circuit and PCB circuit board assembly with components. It can be connected directly with the computer. This module, in addition to the general liquid crystal display device should be noted that when using the Notes, but also in the assembly, note the following when used.

1. Protective film processing module in the packed finished liquid crystal display device affixed to the surface - layer of protective film to prevent contamination in the assembly when the display surface, before the end of the assembly shall not be thrown off the machine, so as not to soil or stain the display surface.

2. Installation of liner between the front panel of the module and preferably about 0.1mm or so to install a liner. Panel should remain absolutely flat to ensure that no distortions in the assembled force, and improve vibration resistance.

3. Prevent static electricity control module, driver circuit is low voltage, micro-power CMOS circuits, static electricity can easily be puncture, and the body may sometimes be as high as tens of volts or hundreds of volts of high voltage static electricity, so in operation, assembly, and use should be extremely careful to prevent static electricity. To do this: Do not touch the outer lead free hand, the circuit board and metal frame. * If you must direct contact should be made to maintain the same potential with the module body, or a good body ground. * Soldering iron used to be well grounded, there is no leakage. • Operation with the electric screwdriver and other tools must be well grounded, there is no leakage. • Do not use the vacuum cleaner handle. Because it will generate strong static electric. • Air dry, static electricity will, therefore, work more than RH60% humidity should be. * Ground, table, chairs, shelves, carts and tools should be formed between the resistor contacts, in order to maintain its potential on the same, or will generate static electricity. * Remove or move back into the bag or place, they should be particularly careful not to generate static electricity. Do not arbitrarily change the packaging or co-abandoned original packaging. Electrostatic breakdown is irreparable damage, be sure to pay attention, not the effect.

4. Precautions when assembling the module is carefully designed and assembled, Please do not self-processing, trimming. * Claws are not free to twist the metal frame and removal. Do not free to modify the processing PCB board outline, mounting holes, lines and components. • Do not modify the conductive strip. Do not modify any internal support. Do not touch, throwing, bending, twisting module.

5 outside the welding wire in welding module, interface circuit, the following procedures should operate. * Soldering iron temperature less than 280oC. * Soldering time less than 3 ~ 4S. * Welding: eutectic, low melting point. • Do not use acid flux. • Repeat welded no more than 3 times, and each repeat at an interval of 5 minutes.

6. Module, use and maintenance of access to the power module and disconnect the power must be in the positive supply (5 ± 0.25V) stable access only after the input signal level. Access the power and stability as before, after or disconnect the input signal level, will damage the module's ICs, the module is damaged. * Dot-matrix LCD modules are pieces of high-large ones, display contrast, viewing angle and temperature, driving voltage great deal. Vee should be adjusted so to the best contrast ratio, viewing angle stops. If Vee adjustment is too high, not only affect the display, but also shorten the life of liquid crystal display devices. * Lower limit of the specified operating temperature range for use below, shows the response is very slow, and in the maximum specified operating temperature range of use, the entire display surface will turn black, it is not damaged, just restore the specified temperature range, all in turn restored summer normal. * Hard push on the display area, will produce abnormal display. Then cut off the power to re-access, you can return to normal. * OLED display device or the surface-fogging, do not work power, as this will cause the electrode chemical reaction, resulting in disconnection. * Long for the sun and bright light, the masked area will have a residual image.

7 if the long-term storage modules (such as several years or more) storage, we recommend the following ways: into the polyethylene bag (preferably anti-static coating) and the mouth shut. • In between -10 ~ +35 ℃ storage. * Put in the dark, to avoid glare. * Must not put anything on the surface pressure. • Strict limits to avoid temperature / humidity storage conditions. Must be stored under special conditions, they can be 40 ℃, 85% RH, or 60 ℃, less than 60% RH storage conditions, but not more than 168 hours. Transportation: LCD and LCM in transit is not severe vibration or fall, can not have external pressure, and water, dust and no direct sunlight.

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