Design and simulation of light field patterns for angular color variation reduction in micro-LED and mini-LED RGB arrays
Journal
Applied Optics
Journal Volume
63
Journal Issue
10
Date Issued
2024-04-01
Author(s)
Abstract
We propose a methodology to mitigate angular color variation in full-color micron-scale LED arrays. By simulating light field distribution for red (AlGaAs) and green/blue (GaN) light across various RGB micro-LED sizes, we can select matching light field patterns for RGB chips, reducing angular color variation from 0.0201 to 0.0030. Applying this method to full-color mini-LED assemblies achieves a reduction from 0.0128 to 0.0032 by matching light field patterns with varying substrate thicknesses. This straightforward approach aligns with current mass transfer processes, offering practical implementation.
Type
journal article