source:other news release time:2023-09-16 Hits: Popular:led screen wholesaler
1、 Application conditions of LED beads:
1. The driving current is greater than the rated driving conditions. In fact, there are many reasons that lead to the decline of LED lamp beads, and the most crucial one is still the issue of heat. Although many LED bead manufacturers do not pay special attention to heat dissipation in secondary products, the degree of light decay of these secondary LED beads will be higher than that of LED beads that pay attention to heat dissipation in long-term use. The thermal resistance of the LED bead chip itself, the influence of silver glue, the heat dissipation effect of the substrate, as well as the colloid and gold wire aspects are also related to light attenuation.
2. The LED beads are driven by constant current, and some of them are driven by voltage, which causes the LED beads to decay.
2、 Quality issues with LED lamp beads themselves:
1. There are defects in the production process, and the heat dissipation of LED bead chips cannot be excellently exported from the PIN pin, resulting in excessive temperature of LED bead chips and intensified chip attenuation.
2. The selected LED bead chip has poor quality and fast brightness attenuation.
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