In the process of using the LED display, there will be dead lights or no light. This is mostly caused by static electricity. How does the LED display prevent static electricity? Security Network Xiaobian will give you detailed analysis.
To know how the LED display is anti-static, you must first know the cause of the static electricity generated by the LED display.
The source of static electricity in the production process of LED display: 1, objects, materials; 2, floor, work tables and chairs; 3, overalls, packaging containers; 4, painted or waxed surface, organic and fiberglass materials. 5. Cement floor, painted or waxed floor, plastic floor tile or floor leather. 6, chemical fiber overalls, non-conductive work shoes, clean cotton overalls. 7, plastic, box, box, bag, plate, foam pad.
Harm of static electricity in the production process of LED display If the anti-static is ignored in any part of production, it will cause the electronic equipment to malfunction or even damage it. When the semiconductor device is placed alone or mounted in a circuit, even if it is not powered, permanent damage to these devices may occur due to static electricity. As we all know, LED is a semiconductor product. If the voltage between two pins or more pins of the LED exceeds the breakdown strength of the component medium, it will cause damage to the component. The thinner the oxide layer, the greater the sensitivity of the LED and the driver IC to static electricity. For example, the solder is not full, the quality of the solder itself is problematic, etc., which can cause serious leakage paths and cause devastating damage.
Another type of failure is caused by the temperature of the node exceeding the melting point of semiconductor silicon (1415 ° C). The pulse energy of static electricity can generate localized heat, so there is a direct breakdown of the lamp and the IC. This failure occurs even if the voltage is lower than the breakdown voltage of the medium. A typical example is that the LED is a diode composed of a PN junction, and the breakdown between the emitter and the base causes a sharp drop in current gain. After the LED itself or the IC in the drive circuit is affected by static electricity, functional damage may not occur immediately. These potentially damaged components are usually displayed during use, so the life effects of the LED products are affected. It is fatal.
The LED display process is a very rigorous and subtle process, and every link must not be overlooked. The static electricity protection of the display screen is also an important part of the LED display production. At present, people in the industry are not deeply aware of the electrostatic protection, and can not meet the needs of professional LED display production. More professionals are needed to continuously research and share discuss.
How to prevent static electricity on LED display
1) Training of static electricity knowledge and related technologies for personnel using static sensitive circuits.
2) Establish an anti-static work area, use static-discharge floor, anti-static workbench, anti-static grounding lead and anti-static device in the area, and control the relative humidity to 40 or above.
3) The damage caused by static electricity to electronic equipment may be released anywhere from the manufacturer to the field equipment. The hazard is caused by insufficient, effective training and equipment failure. LEDs are devices that are sensitive to static electricity. INGAN wafers are generally considered to be "first" susceptible to interference. And ALINGAPLEDSSHI "second place" or better.
4) ESD damaged devices can show dim, blur, extinction, short or low VF or VR. Equipment damaged by ESD should not be confused with electronic overload, such as: incorrect current design or drive, wafer attachment, wire shield grounding or packaging, or common environmental induced pressure.
5) ESD safety and control procedures: Most electronic and electro-optical companies have very similar ESDs and have successfully implemented ESD control, manipulation and main programs for their equipment. These programs have been used to detect quality effects because of ESD. ISO-9000 certification also included him in the normal control process.
This article analyzes in detail the causes of static electricity generated by LED display and how to prevent static electricity on LED display. For more information about LED display, please continue to browse the hot security investment network.
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