Is your LED display anti-static?
1. Hazards of Electrostatic Discharge (ESD)
ESD (Electrostatic Discharge) often occurs in any link in the process of LED display production, transportation, installation, etc. Due to the irregular operation, the product is subjected to electrostatic breakdown, causing sudden and potential damage to the LED display product.
Sudden damage reduces product yield and increases business costs. Sudden damage refers to: the voltage between two or more pins of LED product components exceeds the breakdown strength of the component medium, resulting in serious damage to the components and loss of function. This kind of damage can usually be found in the quality inspection during the production process, and will not directly affect the customer’s use, but if the manufacturer suffers from electrostatic interference for a long time, it will increase the production cost.
Potential damage affects the service life of the product and causes losses to customers. Potential damage accounts for a higher proportion of electrostatic discharge (ESD) damage, reaching more than 90%, and because the pulse energy of static electricity causes local heating of the lamp or IC, the breakdown of the lamp and IC is detected. cannot be found in. However, the product becomes unstable, and the phenomenon of dead lights appears one after another in the subsequent use of customers, which greatly affects the service life of the LED display and causes losses to customers.
2. Prevention of Electrostatic Discharge (ESD)
To minimize the harm of static electricity to the LED display, manufacturers, distributors and customers need to strictly implement the ESD20.20 standard during production, transportation and use. In production, the static electricity is directly discharged to the ground through the wire connection, which is the most direct and effective anti-static measure.
Production-side electrostatic prevention: Provide training on electrostatic knowledge and related technologies for those who use electrostatic-sensitive circuits.
During the production process, workers are required to wear grounded electrostatic wristbands. Especially in the process of cutting feet, inserting, debugging and post-soldering, and monitoring it, the quality personnel must do an electrostatic test of the wristband at least once every two hours, and make a test record.
When welding, the electric soldering iron should use an anti-static low-voltage constant temperature soldering iron as much as possible, and maintain a good grounding. During the assembly process, use a low-voltage DC electric screwdriver (commonly known as an electric batch) with a grounding wire as much as possible. Ensure that the production pull table, glue filling table, aging rack, etc. are effectively grounded. The production environment is required to be grounded with copper wires, such as floors, walls, and ceilings used in some occasions, and anti-static materials should be used. During daily operation, LED display products should always be stored in anti-static bags or containers.
Transportation-side electrostatic prevention: When transporting, keep the delivery vehicle grounded, and the box or other equipment has conductive wheels or drag links. When touching the LED display product, keep the correct method of handling, and do not directly touch the PCB board and the electronic components on it.
Client-side electrostatic prevention: When installing the LED display screen, customers and engineering companies must also strictly follow the anti-static operation, and do not directly touch the core electronic components of the product without protective measures. When installing the steel structure of the LED display screen, do an effective grounding, and introduce the static electricity of the screen into the ground.