Anti-static guidance method for LED production enterprises
LEDs are currently used more and more widely, and almost every family has an LED display
Screen computer or TV, but the LED screen brings us convenience and also gives me
We have brought many inconveniences, such as static electricity, "cracking", which always shocks us.
Fear, then how to remove the static electricity of the LED? *The best method is the grounding method, connect
The ground is to directly discharge static electricity to the ground through the wire connection, which is an anti-static measure
*Direct* Effective, for conductors usually grounded, we require manual use
The tools used are grounded, with a grounded anti-static wristband, and the work surface is grounded.
(1) During the production process, workers are required to wear a grounded electrostatic wristband. especially in
When cutting feet, plug-ins, debugging and post-welding processes, and supervise them, the quality personnel must
*Do a bracelet static test at least once every two hours, and make a good test record.
(2) When soldering, the electric soldering iron should use anti-static low-voltage constant temperature soldering iron as much as possible, and protect
Maintain good grounding.
(3) In the assembly process, use a low-voltage DC electric screwdriver with a ground wire as much as possible
(Commonly known as electric batch).
(4) Ensure the effective grounding of the production pull table, glue potting table, and aging rack.
(5) We require the production environment to be grounded with copper wires, such as floors, walls, and
And the ceiling used in some occasions, etc., should use anti-static materials. Usually even
Ordinary gypsum board and lime painted walls are also acceptable, but the use of plastic ceilings is prohibited
And ordinary wallpaper or plastic wallpaper.
LED is a semiconductor component, and the PN junction is directly exposed outside, very
‘Fragile’, this type of electronic components are particularly susceptible to damage from static electricity. therefore,
Electrostatic protection of LEDs is a very important task.
After the LED is damaged by static electricity, the lamp will die and the Ir will increase. Once the LED
It is very difficult to trace the cause after injury, it is almost impossible to trace back to the specific
There was a problem in that link. Finding the cause of the failure is also difficult to confirm.
So how do you generally take some measures to protect LEDs from static electricity?
In fact, there is no very specific method, the commonly used measures are:
A. Packaging-anti-static packaging bags, anti-static transfer boxes in the production process
Rack and so on;
B. Elimination of static electricity-wear static bracelets, safe grounding of tools and equipment, static wind
Fans, ion fans, etc.;
C. Other aspects-wear anti-static clothing, lay anti-static table mats, strengthen static
Electricity system management, etc.;
——All these measures are relatively common, you can consult some sales in this area
Product company
——But even if we do the best electrostatic protection measures, then our LED
It may not be able to completely avoid electrostatic damage. Because whether the LED receives electrostatic damage depends on two
aspect:
1) Is the energy (voltage) of static electricity higher than the ability of the LED itself?
2) Is the antistatic ability of LED relatively strong?
——In other words, if the LED has strong antistatic ability, then it suffers from static electricity.
The damage is much smaller. According to our understanding, there are currently some products on the market with better quality and
LEDs with high electrostatic capacity do not need a lot of electrostatic protection during production and processing
In addition, it will not be harmed by static electricity even without adopting any protective measures. but
Some LEDs with relatively poor anti-static properties, even if good anti-static measures are taken, can be
After the product is made, it is still very likely to be broken by static electricity and die.
Therefore, when we choose LED lights or LED chips, we have to resist the LED
Evaluation of electrostatic ability-it is the core, scientific and convenient for LED electrostatic protection
Link.