LED display screen technology is becoming increasingly mature, but in actual use, LED display screens may cause some problems such as static electricity. So is static electricity on LED display screens dangerous? Next, let’s take a closer look.
Is static electricity on LED display screens dangerous? What do you think?
1. The cause of static electricity
From a microscopic perspective, according to the theory of atomic physics, when electricity is neutral, matter is in a state of electrical balance. The contact of electrons of different materials causes the gain and loss of electrons, thus losing electrical balance. , resulting in static electricity.
From a macroscopic perspective, the reason is that friction between objects generates heat, which stimulates electron transport. Contact and separation between objects produce electron transfer. Electromagnetic induction causes an unbalanced distribution of charge on the surface of an object. The combined effects of friction and electromagnetic induction.
Electrostatic voltage is generated by different kinds of substances coming into contact and separating from each other. This effect is known as friction and activation, where the voltage depends on the properties of the materials rubbing against each other themselves. LED display screens are mainly caused by static electricity caused by direct and indirect contact between the human body and related components during the actual production process. Therefore, according to the characteristics of the industry, some targeted anti-static measures can be formulated.
2.Static electricity hazards in the production process of LED display screens
Neglecting anti-static during the production process will lead to malfunction or damage of electronic equipment.
Static electricity can also permanently damage semiconductor devices if they are left alone or attached to a circuit without power. LED is called a semiconductor product, and its voltage exceeds the destructive strength of the component media and may damage the component. The thinner the oxide layer, the more sensitive the LED and driver IC respond to static electricity. For example, if there is a problem with the quality of the solder fill or the solder itself, it can create serious leakage pathways that can cause damage.
Is static electricity on LED display screens dangerous? What do you think?
Another type of failure occurs when the temperature of the node exceeds the melting point of the semiconductor silicon. The pulse energy of static electricity can cause local heating, leading to direct failure of lamps and ICs. This may also occur if the voltage is below the yield voltage of the medium. For example, an LED is a diode consisting of a PN connection, and the current gain can be drastically reduced due to destruction between the emitter and base. Under the influence of static electricity, there may not be immediate functional damage to the indicator lamp itself or to the IC on the driver circuit. These potentially damaged components usually appear during use, so the impact on the life of the monitor is fatal.
