From a microscopic point of view, according to the theory of atomic physics, when the material is electrically neutral, the material is in an electric equilibrium state. Because of the gains and losses of electrons generated by the contact of different material electrons, the material loses its electric balance and generates an electrostatic phenomenon. From the macro perspective, the reasons are: friction between objects to generate heat, stimulate the transfer of electrons; contact and separation of objects to produce electron transfer; electromagnetic induction caused by the uneven distribution of the surface charge; friction and electromagnetic induction of the comprehensive effect.
Electrostatic voltage is generated by the contact and separation of different kinds of substances. This effect is known as frictional electrification, and the resulting voltage takes the characteristics of the materials that are rubbing against each other. Due to the large screen of led, in the actual production process, the main body is the direct contact and indirect contact between the human body and related components to generate static electricity. Therefore, according to the characteristics of the industry we can do some targeted static electricity prevention measures.
The effect of static electricity on the production of LED displays: When semiconductor devices are individually placed or loaded into a circuit, even if they are not powered, static damage to these devices may be caused. Led is a semiconductor product. If the voltage between two pins or more pins of the LED exceeds the dielectric strength of the device, it will damage the device. The thinner the oxide layer, the greater the susceptibility of the LED and driver IC to static electricity. For example, the solder is not full, the quality of the solder itself is a problem, etc., and it will cause serious leakage paths, causing devastating damage to the other The fault is caused when the temperature of the node exceeds the melting point (1415°C) of the semiconductor silicon.
The electrostatic energy of the pulse can generate local heat, so there is a direct breakdown of the lamp and ic. Even if the voltage is lower than the breakdown voltage of the medium, this kind of failure will occur. A typical example is that led is a diode consisting of a pn junction. Breakdown between the emitter and base results in a sharp decrease in current gain. After the LED itself or the ic in the driving circuit is affected by static electricity, functional damage may not occur immediately. These potentially damaged components usually appear during use, so the lifetime of the LED large screen is affected. All are deadly.
Electrostatic voltage is generated by the contact and separation of different kinds of substances. This effect is known as frictional electrification, and the resulting voltage takes the characteristics of the materials that are rubbing against each other. Due to the large screen of led, in the actual production process, the main body is the direct contact and indirect contact between the human body and related components to generate static electricity. Therefore, according to the characteristics of the industry we can do some targeted static electricity prevention measures.
The effect of static electricity on the production of LED displays: When semiconductor devices are individually placed or loaded into a circuit, even if they are not powered, static damage to these devices may be caused. Led is a semiconductor product. If the voltage between two pins or more pins of the LED exceeds the dielectric strength of the device, it will damage the device. The thinner the oxide layer, the greater the susceptibility of the LED and driver IC to static electricity. For example, the solder is not full, the quality of the solder itself is a problem, etc., and it will cause serious leakage paths, causing devastating damage to the other The fault is caused when the temperature of the node exceeds the melting point (1415°C) of the semiconductor silicon.
The electrostatic energy of the pulse can generate local heat, so there is a direct breakdown of the lamp and ic. Even if the voltage is lower than the breakdown voltage of the medium, this kind of failure will occur. A typical example is that led is a diode consisting of a pn junction. Breakdown between the emitter and base results in a sharp decrease in current gain. After the LED itself or the ic in the driving circuit is affected by static electricity, functional damage may not occur immediately. These potentially damaged components usually appear during use, so the lifetime of the LED large screen is affected. All are deadly.
Kitchen Faucet ,Pull Down Kitchen Faucet,Delta Faucets Kitchen,Menards Kitchen Faucets
WENZHOU HUAGUAN SANITARY WARE CO,.LTD , https://www.wzhuaguan.com