LED DROOP
The blue LED Illuminate yellow fluorescent powder got a white LED. This is the origin of white LED. First we gave a brief analysis of LED DROOP . there are have two reason . a reason for some self reason . the blue led droop is fast than RED LED ,YELLOW LED AND GREEN LED.Other reason from fluorescent powder DROOP. The led fluorescent powder DROOP will be serious in high temperature.
Concretely, this reason includes the following two parts,
Quality problems:
*LED chip have a quality deficiency issue make brightness DROOP is fast.
*Production technology has been faulted
The LED not used correctly:
*It is better to use constant current to drive led. Because the voltage drive make LED DROOP is fast.
* Driving current can be overly ambitious. Even the current is larger than requirements of Technical Specification.