| Summary: | 碩士 === 國立中央大學 === 光電科學研究所 === 99 === In this thesis, we study the package loss for six white LED package types. Based on the YAG phosphor model, we build up six white LED package types in our simulation. Under the same CCT, we calculate package loss between six different packages and analyze the effect of the different LED package types. We also discuss the influence of the package loss by changing the reflectivity of the substrate and the absorption coefficient of the die.
In order to verify the simulation data, we try to do the experiments for investigation of the package loss of the six LED package types. First, We measure the reflectivity of substrate, then we do the six geometry of LEDs package. Finally, we compare with simulation and experimental data and analyze the difference between simulation and experiment.
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