Full-angle DBR Enhances Flip-chip Mini-LED Performance

Researchers from Wuhan University in China have proposed a novel full-angle Ti3O5/SiO2 DBR to enhance the performance of flip-chip blue and green mini-LEDs.

Mini-LEDs have been considered as one of the most promising candidates for next generation displays, due to their advantages of high brightness, high color saturation, power saving, and long lifetime. However, to realise the HDR requirement of LCDs, mini-LEDs should be more efficient.

In the study, published in the journal Optics Express, the researchers demonstrated full-angle Ti3O5/SiO2 DBR to improve the light output power of blue and green flip-chip mini-LEDs. The full-angle DBR, consisting of different DBR stacks optimized for discrete central wavelength in blue, green, and red wavelength region, could alleviate angular dependence and broaden reflective bandwidth in comparison with conventional DBRs.