How standardized production？ How to produce a low attenuation, long-life LED display in the true sense? This article is going static protection angle to discuss hazards and prevention measures in the process of led display production.
- Electrostatic hazards in the production process of the LED display.
If we ignore anti-static in any part of the production, it will cause electronic equipment failure or even damage it.
When the semiconductor device is separate place or load circuit, even not powered, static electricity can also cause permanent damage to these devices. Familiar, LED is a semiconductor product; it will cause damage to the element if the voltage between two or more pins of LED exceeds the breakdown strength of the component media. The thinner the oxide layer, the LED and driver IC greater sensitivity to static electricity, such as solder is not full and the solder itself quality problems, etc., will have a serious leak path, causing devastating damage
Another failure is due to the node temperature exceeding the melting point of semiconductor silicon (1415 ℃). Pulse energy of electrostatic can produce localized fever, so faulty lamps and direct breakdown of IC. The failure will occur even if the voltage is lower than the breakdown voltage of the media. A typical case, LED is diode formed by PN junction, breakdown between the emitter and base will drastically reduce current gain. After the LED itself or the drive circuit IC exposed to static electricity, it may not appear immediately functional damage to these components, the potential damage is usually in the course will be manifested, that is deadly damage to led display.
- The reason of product static electricity
From the microscopic, according to the theory of atomic physics, substance power stays balance in the neutral state. Different substances electronic contact with the electrons pros and cons make the material loss of power balance to cause phenomenon of static electricity.
From a macro perspective, the reasons are: object between friction and heat, to stimulate electron transfer; contact and separation between objects generate electron transfer; electromagnetic induction caused by uneven distribution of surface charge; friction and the combined effect of electromagnetic induction.
Electrostatic voltage is produced by different kinds of material contact and separated from each other. This effect is the well-known friction electrification voltage generated depends on the mutual friction of the material itself. The main reasons to produce static electricity during led display production are body directly or indirectly contact with related components.
Therefore, we should make good static protection in the LED display production process to improve product reliability.
Optokingdom aims to offer quality led display to all over the world.