LED electronic digital display attaches great importance to anti-static methods. The following are several explanations for static electricity and anti-static:
1. Origin of static electricity: the origin of static electricity that affects the circuit mainly includes human body, plastic products and related equipment and instruments, among which the static power from the operating environment includes the following items:
1) Objects, data
2) Floors, desks and chairs
3) Factory clothes and packaging containers
4) Painted or waxed surfaces, organic and fiberglass information.
5) Cement floor, painted or waxed floor, plastic floor tile or floor leather.
6) Chemical fiber factory clothes, non-conductive working shoes, clean cotton factory clothes.
7) plastics, packaging boxes, boxes, bags, pads, foam plastic gaskets.
2. The failure forms of ESD are sudden failure and potential failure. More than 90% of the static failure in the application environment is potential failure, which shows that the anti electric stress of the circuit can be weakened and the service life can be shortened.
3. Anti static measures:
1) Practice the electrostatic knowledge and related skills for the personnel using electrostatic sensitive circuit.
2) Set up anti-static operation area, use anti-static floor, anti-static operation platform, anti-static grounding lead and anti-static appliances in the area, and control the relative humidity above 40. 3) the damage caused by static electricity to electronic equipment may be released anywhere from the manufacturer to outdoor equipment. The damage is due to insufficient, useful exercises and equipment failure. LED is sensitive to static electricity. InGaN chips are generally considered to be the “first” to be disturbed. And AlInGaP Leeds Shi “second” or very good.
4) The vfesd can be dimmed, or the vfesd can be dimmed. ESD damaged equipment should not be mixed with electronic overload, such as faulty current design or drive, chip hanging, wire shielding grounding or packaging, or general environment induced pressure, etc.
5) ESD safety and control procedures: ESD of most electronic and electro optical companies are very similar, and ESD control, operation and main procedures of all equipment have been successfully completed. These procedures are now used to check the quality of the instrument. ISO-9000 certification also listed them as normal control procedures.
4. Transportation and packaging: during normal operation, ESD sensitive equipment should always be stored in anti-static bag or container. This includes inventory storage, shipping and WIP. The prevention of transportation includes the consumption of motorcade, boxes or other equipment, such as conductive wheels or extenders, when transporting ESD equipment is grounded.