Research on a Novel GaN-Based Converted Mini-LED Backlight Module via a Spectrum-Decouple System

Che Hsuan Huang, Shu Hsiu Chang, Been Yu Liaw, Cheng Yi Liu, Chia Yueh Chou, Jia Rou Zhou, Chien Chung Lin, Hao Chung Kuo, Li Jun Song, Feng Li, Xinke Liu

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Owing to the development of modern display technology, micro- and mini-light-emitting diodes (LEDs) have affected technological advancements in the display industry. The structure of mini-LEDs is completely different than that of traditional LED backlights because the former employs a display technology with an LED array structure, optical resonant cavity, and color conversion layer. Display backlight technology encounters difficulty in achieving a truly effective energy-loss mechanism when designing or measuring mini-LED performance. The present study proposes three major mini-LED energy loss mechanisms: cross-talk, resonant, and quantum conversion losses. Herein, the spectrum was obtained through the integrating sphere system, and the calculation mechanism was formed by the down-conversion theorem as the decoupling principle, which successfully calculated the independent energy-loss efficiency of each mechanism and effectively deduced the brightness and color saturation performance of this design combination.

Original languageEnglish
Article number9143121
Pages (from-to)138823-138833
Number of pages11
JournalIEEE Access
StatePublished - 2020


  • Mini-light-emitting diode
  • backlight
  • display
  • down-conversion theorem
  • energy loss


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