The Effects of TiO2 Diffuser-Loaded Encapsulation on Corrected Color Temperature Uniformity of Remote Phosphor White LEDs

The Effects of TiO2 Diffuser-Loaded Encapsulation on Corrected Color Temperature Uniformity of Remote Phosphor White LEDs

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With the development of high-efficiency and high-power LEDs, they have become the most energy-efficient and environmentally friendly artificial light source.Phosphor-converted white LEDs are currently mainstream in the market.The remote phosphor is an effective way to enhance the conversion efficiency and lifetime of phosphor-converted LEDs.For applications of high-quality lighting and LCD backlights, the uniformity of angular correlated color temperature (CCT) is very important.This report explored a remote phosphor white Margarita Glasses LED with low angular CCT variance and high luminous efficiency by using TiO2 diffuser-loaded encapsulation.

Experimental results revealed that for the TiO2 diffuser-loaded encapsulation remote phosphor white LED, the angular color uniformity could be improved by 31.82% and Leather Care the luminous flux by 8.65%.Moreover, the mean CCTs of the TiO2 diffuser-loaded encapsulation and non-diffuser remote phosphor white LEDs were similar at a driving current of 350 mA.Finally, we showed that incorporating the TiO2 diffuser into the phosphor layer of the remote phosphor white LEDs, does not influence the reliability of the LED.