LED electronic screen static electricity is also harmful
In recent years, LED electronic screen technology in our country is increasingly mature, but in actual use, LED electronic screen may appear static electricity and some other problems. So LED electronic screen static electricity will be dangerous? Next, we take a closer look.
LED electronic screen static electricity is also dangerous? How do you think
1, the cause of static electricity
From a microscopic point of view, according to the theory of atomic physics, electricity in the neutral when the material is in a state of electrical equilibrium, due to the contact of the electrons of different substances and lead to the gain and loss of electrons, thus losing the electrical equilibrium, resulting in the phenomenon of static electricity.
From a macroscopic point of view, the reason is that friction between objects generates heat and stimulates electron transport. Contact and separation between objects produces electron transfer. Electromagnetic induction causes an unbalanced distribution of charge on the surface of objects. Combined effect of friction and electromagnetic induction.
Electrostatic voltage is produced by the contact and separation of different kinds of substances from each other. This effect is well known as friction and initiation, and the voltage depends on the properties of the materials themselves that rub against each other.LED electronic screen is mainly due to the static electricity caused by the direct and indirect contact between the human body and the relevant components in the actual production process. Therefore, according to the characteristics of the industry, you can develop some targeted anti-static measures.
2, LED electronic screen production process of electrostatic hazards
Neglect of anti-static in the production process can lead to electronic equipment failure or damage.
If the semiconductor device is placed alone or attached to the circuit is not energized, static electricity will also permanently damage these devices.LED is known as a semiconductor product, its voltage exceeds the component media damage intensity, and may damage the components. The thinner the oxide layer, the more sensitive the LEDs and driver ICs are to the response of static electricity. For example, if there is a problem with the solder filling or the quality of the solder itself, a serious leakage path can be created which can cause damage.
Is static electricity dangerous even for LED electronic screens? What do you think?
Another type of failure occurs when the temperature of a node exceeds the melting point of semiconductor silicon. The pulsed energy of static electricity can cause localized heating, leading to failures that directly destroy the lamp and IC. This can also happen if the voltage is below the yield voltage of the dielectric. For example, LEDs are diodes consisting of a PN connection, and the current gain may be drastically reduced due to damage between the emitter and base. There may be no immediate functional damage to the indicator itself or to the ICs on the driver circuit under the influence of static electricity. These potentially damaging components usually occur during use and are therefore fatal to the life of the display.
