A light guide plate that uses asymmetric intensity distribution of mini-LEDs for the planar illuminator

Zhi Ting Ye, Yung Min Pai, Cheng-Huan Chen, Hao-Chung Kuo*, Lung Chien Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Traditional backlights are designed with new dot patterns, and then injection molding, laser beam fabrication, or UV (Ultraviolet) roll-to-plate imprinting is used to apply dot patterns to a light guide plate—the process consumes considerable time and resources. Therefore, we propose a novel light guide design that does not use a dot pattern. We designed an asymmetric intensity distribution of mini-LEDs (Light Emitting Diode) and a light guide plate with a fully printed diffusion reflection on the bottom surface for a planar illuminator. The design rules for the proposed architecture are described in this paper. The archetype design with a 152.4 mm circular down-light has a diameter of 143 mm for the planar light source module. The experiment achieved a total efficiency of 85% and uniformity of 92.6%.

Original languageEnglish
Article number141
JournalCrystals
Volume9
Issue number3
DOIs
StatePublished - 1 Mar 2019

Keywords

  • Asymmetric
  • Asymmetric intensity distribution
  • Diffusion reflection
  • Mini-LED
  • Planar illuminators

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