LED display often generates static electricity during the production process. The occurrence of static electricity will cause harm to the production process. The harm of static electricity in the production process of LED electronic display: If the anti-static is ignored in any part of production, it will cause the electronic equipment to malfunction. Even make it damaged. When semiconductor devices are placed alone or loaded into a circuit, permanent damage to these devices may occur due to static electricity even if power is not applied. 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, such as the lack of solder, the quality of the solder itself, 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 driver 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 process of making LED electronic display is a very rigorous and nuanced 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 electronic display production. More professionals are needed to continuously research, Discuss together. In order to avoid these hidden hazards, manufacturers must understand the source of static electricity, and prevent it from happening in the future. So, where does the static electricity in the LED display production come from?
1, objects, materials
2, floor, work desks and chairs
3. Work clothes and packaging containers;
4. Painted or waxed surfaces, 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.
Anti-static measures
1. Train static electricity knowledge and related technologies for personnel using static sensitive circuits.
2. Establish an anti-static work area, use anti-static floor, anti-static workbench, anti-static grounding lead and anti-static equipment such as anti-static safety shoes.