Abstract
Micro LED displays are widely acknowledged as forthcoming display innovations. However, due to the micro LED device size reductions, the light extraction efficiency of micro LED devices will be compromised. This paper extends the EQE equation and implement a LEE secondary optics (the secondary optics of light extraction efficiency) factor. The paper also presents few directions to enhance the normal angle light intensity for micro LED displays. Our sample preparations have confirmed that a white glue layer can bring about an improvement of over 100%, and a lens with a protection layer can also boost the normal angle light intensity by 45%. Considering the overall display performance including surface reflection, we simulated a condition that can improve the normal angle light intensity by over 70% in micro LED displays.
| Original language | English |
|---|---|
| Pages (from-to) | 717-720 |
| Number of pages | 4 |
| Journal | Digest of Technical Papers - SID International Symposium |
| Volume | 55 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2024 |
| Event | International Symposium, Seminar, and Exhibition, Display Week 2024 - San Jose, United States Duration: 12 May 2024 → 17 May 2024 |
Keywords
- lens
- light efficiency
- Micro LED
- normal angle light intensity
- sidewall effect
- white glue
- μLED