How to prevent static electricity on LED display

    Many friends who are new to LED display screens are curious about why they are required to wear protective equipment such as shoe covers, anti-static rings, and anti-static clothing when visiting many LED display screen workshops. To understand this issue, we need to mention the knowledge related to anti-static protection in the production and transportation of LED display screens; many LED display screens have dead lights or are not lit, mostly due to static electricity.

   Sources of static electricity in the production process of LED display screens: 

  1. Objects, materials

  2. Floors, work tables and chairs

 3. Work clothes, packaging containers;

  4. Painted or waxed surfaces, organic and fiberglass materials.

  5. Cement floors, painted or waxed floors, plastic floor tiles or floor leather.

  6. Chemical fiber work clothes, non-conductive work shoes, clean cotton work clothes.

  7. Plastics, packaging boxes, boxes, bags, trays, foam plastic pads.

    The harm of static electricity in the production process of LED display screens If anti-static is ignored in any link of production, it will cause electronic equipment to malfunction or even damage it. When semiconductor devices are placed alone or loaded into circuits, static electricity may cause permanent damage to these devices even without power. As we all know, LED is a semiconductor product. If the voltage between two or more pins of LED exceeds the breakdown strength of the component medium, the component will be damaged. The thinner the oxide layer, the more sensitive the LED and driver IC are to static electricity. For example, the incomplete soldering and the quality problems of the soldering itself will produce serious leakage paths, which will cause devastating damage.

    Another type of failure is caused by the temperature of the node exceeding the melting point of semiconductor silicon (1415℃). The pulse energy of static electricity can generate local heating, so there is a direct breakdown of the lamp and IC. This failure will occur even if the voltage is lower than the breakdown voltage of the medium. A typical example is that LED is a diode composed of PN junctions, and the breakdown between the emitter and the base will cause a sharp decrease in the current gain. After the LED itself or the various ICs in the driver circuit are affected by static electricity, functional damage may not occur immediately. 

    These potentially damaged components usually show up during use, so they are fatal to the life of LED products.

    The production process of LED display is a very rigorous and delicate process, and every link cannot be overlooked. The electrostatic protection of the display screen is also an important part of the production of LED display screens. At present, the industry's understanding of electrostatic protection is not deep enough, and it cannot meet the needs of professional LED display screen production. More professionals are needed to continue to study and discuss together.

    How to prevent static electricity in LED display screen production:

1. Train the personnel who use electrostatic sensitive circuits on electrostatic knowledge and related technologies.

   
   

  2. Establish an anti-static work area, use anti-static floors, anti-static workbenches, anti-static grounding leads and anti-static equipment in the area, and control the relative humidity above 40.

  3. The harm caused by static electricity to electronic equipment may occur anywhere from manufacturers to field equipment. The harm is caused by insufficient and effective training and equipment operation failure. LED is a device that is sensitive to static electricity. INGAN chips are usually considered to be "first" susceptible to interference. And ALINGAPLEDSSHI "second" or better.

  4. ESD-damaged equipment can show dim, blurred, extinguished, short or low VF or VR. Equipment damaged by ESD should not be confused with electronic overload, such as: due to incorrect current design or drive, chip hanging, wire shield grounding or packaging, or general environmental induced stress.

  5. ESD safety and control procedures: Most electronic and electro-optical companies have very similar ESD and have successfully implemented ESD control, manipulation and master procedures for all equipment. These procedures have been used to detect quality effects of ESD instruments since ancient times. ISO-9000 certification also includes it in normal control procedures.