Why do lamp beads die?

As an important medium for modern information dissemination, LED display screens are widely used in many fields such as security monitoring, command and dispatch, display, commercial advertising, stage performances, and smart conferences. However, during use, some users may encounter a situation where a large number of LED lamp beads die after using the LED display screen for about a year. So what is the cause of the necrosis of the lamp beads?

There are many reasons for the necrosis of LED lamp beads, mainly including the following points:

1. Abnormal power supply:

Unstable power supply or improper connection may cause the LED lamp beads to withstand excessive voltage or current, thereby damaging them. For example, if an LED lamp bead with a nominal 3V is used with an unmatched power supply, even if the voltage is not high, the current is too large and the lamp bead may burn out.

2. Lamp bead quality problem:

The welding quality of the LED display screen directly affects the service life of the lamp bead. During the process of electric soldering iron welding, heating platform welding or reflow soldering, if the temperature is improperly controlled or the grounding is poor, the LED lamp bead may be damaged.

3. Storage and use environment:

The storage conditions of LED lamp beads have an important impact on their performance. If the storage environment is humid, the silicone packaging material of the lamp beads will absorb moisture, which may cause deformation of the internal gold/silver wires, chips, and brackets during high-temperature welding, resulting in dead lamps. In addition, the harsh conditions of the display screen such as high temperature, high humidity, high acid/alkali/salt, etc. will also accelerate the aging of the lamp beads.

4. Static electricity problem:

Static electricity can cause LED function failure. During the production, storage and assembly process, if appropriate static electricity protection measures are not taken, such as the operator not wearing anti-static wristbands and gloves, the equipment is not grounded, etc., it may cause damage to the LED lamp beads.

5. Improper installation leads to:

Violent installation. During the installation process, if violent means are used, such as plugging and unplugging the connection wires with excessive force, directly hitting the LED display frame to fix the position, etc., the LED lamp beads and their supporting structures may be impacted, causing physical damage or internal connection breakage. Extrusion deformation. When the LED display screen is installed, if it is squeezed by external force, such as improper stacking of the box body, the screen body is pressed by heavy objects, etc., it may cause the lamp bead array to deform, thereby affecting its electrical and optical properties, and even directly damaging the lamp beads. If the fixing device is loose or the installation position is unstable after the LED display is installed, the LED display may shift due to vibration or wind pressure during long-term use, causing the connection between the lamp beads and the circuit board to loosen or break.

Shenzhen Shinerave is a leading domestic supplier of LED displays.