A lot of new to LED display friends are curious, why at the time of visit many LED display workshop, were asked to take over, electrostatic ring, dress in electrostatic protective equipment, etc.
To understand this problem, will be referred to the production of LED display transport electrostatic protection related knowledge;
Many dead lamp or LED display appear not bright, mostly caused by static electricity.
LED display production electrostatic sources 1, objects and materials in the process of 2, 3 floor, work tables and chairs, overalls, packaging container;
4, paint, or the surface of the wax, organic and glass fiber materials.
5, cement floor, the paint or waxing floor, plastic tile or plastic flooring.
6, chemical fiber clothes, not conducting work shoes, clean cotton overalls.
7, plastics, packing box, box, bag, disc, plastic foam pad.
Static electricity in the hazard in the process of producing LED display if any link in the production of ignore the anti-static, it will cause electronic equipment failure and even make it to further deteriorate.
When the semiconductor devices placed separately or load circuit, even without electricity, due to electrostatic also may cause permanent damage of the device.
If known, LED is a semiconductor products, LED the voltage between two or more stitches stitches over components dielectric breakdown strength, will cause damage to components.
Oxide layer is thin, the LED and driver IC to electrostatic sensitivity is, the greater the for example of solder is not full, solder itself quality problems, and so on, will have serious leakage path, causing devastation.
Another failure is due to the node temperature above the melting point of semiconductor silicon (
Electrostatic pulse energy can produce local war fever, hence breakdown tubes and IC failure directly.
Even if the voltage is lower than the dielectric breakdown voltage, also can produce this kind of failure.
A typical example is that the LED is composed of p-n junction diode breakdown between the emitter and the base current gain drastically reduced.
LED by itself or in the drive circuit of each IC after affected by static electricity, or may not appear immediately functional damage, the potential damage of components in use process will usually appear, so the impact on the life of the LED products are fatal.
The making process of the LED display is a very rigorous, fine process, every link of omission.
Display of electrostatic protection work is also an important link of the LED display production, at present the industry awareness of electrostatic protection is not deep enough, more can't meet the needs of the production of the professional LED display, need more professionals continue to study, to discuss.
full color LED display
in the production of anti-static: 1)
The use of electrostatic sensitive circuit static knowledge and the related technical training.
Anti-static work area, anti-static floor is put in use in the district, esd workstation, anti-static grounding wire and anti-static equipment, and the relative humidity control in more than 40.
Static electricity may be released to the harm of electronic devices caused by anywhere from the manufacturer to the field device.
Harm is because there is no enough, effective training and equipment failure caused by manipulation.
The LED is sensitive to electrostatic equipment.
INGAN chips are generally considered to be 'first' are susceptible to interference.
While ALINGAPLEDSSHI 'second' or better.
ESD damaged equipment can show the dim and blurred, put out, short or low VF or VR.
ESD damaged equipment should not be confused not electronic overload, such as: because of the error of current design or drive, wafer articulated, shielding grounding wires or encapsulation, or ordinary environment induced stress, etc.
ESD safety and control program: most of the electronic and optical company ESD is very similar, and have successfully achieved so equipment ESD control, manipulation and the main program.
These programs because of ESD ancient instrument has been used to test the quality effect.
9000 certification also put him on the normal control program.
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