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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 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
Pages (from-to)138823-138833
Number of pages11
JournalIEEE Access
StatePublished - Jul 2020


  • Light emitting diodes
  • Mathematical model
  • Optical losses
  • Image color analysis
  • Energy exchange
  • Semiconductor device measurement
  • Energy measurement
  • Mini-light-emitting diode
  • energy loss
  • display
  • backlight
  • down-conversion theorem

Cite this