In the production process of LED chip beads, we pay special attention to a parameter that is often overlooked: ESD (electro-static discharge), electrostatic discharge is a major culprit to damage the LED, it should be said that electrostatic damage is a natural enemy of electronic components, especially The electrostatic sensitive components such as the blue LED and the white LED, if damaged, will cause the LED lamp beads to fail or even be scrapped, so static protection must be done.
LED lamp beads anti-static ideas:
Whenever different materials are rubbed or even separated, static electricity is generated, so static electricity cannot be avoided and can only be limited. Electrostatic discharge generates current. As long as the discharge is controlled, the electrostatic damage can be reduced. The commonly used method is to guide the static electricity through the ground. Therefore, the workbench needs to establish a complete grounding system, and the static electricity on the non-conductor can be used by ionization. with.
LED anti-static
LED industry to prevent static electricity to pay attention to what?
1. Expand the photoelectric LED lamp beads generally use anti-static bags vacuum packaging, do not open the package before use.
2. In the use of extended photoelectric LED lamp beads, to do a good job of static protection, such as wearing static protective clothing, wearing an electrostatic wristband, workbench and soldering iron grounding, etc., conditional factories recommend the use of ion fans.
3. Regularly check whether all electrostatic protection systems are operating properly, such as surface impedance testers, electrostatic testers, hand-foot loop testers, ion fan testers, etc.
4. Confirm the anti-static ability of each LED lamp bead, as well as the electrostatic protection system of the auditing and processing factory.
Common anti-static four major ways:
First, the divergent way:
1. Eliminating the static electricity on the conductor by establishing the via (grounding)
2. Limit the current rate by the path resistance
3. Control the static dissipation time by the resistance of the path
Second, in the way:
The electrostatic charge on the surface of non-conductors (insulators) is neutralized by blowing out a large number of positive and negative ions, such as ion fans and ion guns.
Third, the shielding method:
When the electrostatic sensitive device is transferred from one electrostatically safe zone to another, shielding protection must be given to avoid static damage that may occur during transportation. For example: cover bag / conductive box.
Fourth, prevention methods:
Use anti-static/conductive or low-impedance materials as much as possible in the ESD work area. For example: anti-static table, floor mats.
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