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Zero-Optical-Distance Mini-LED Backlight with Cone-Shaped Light Coupling Microstructures
- Source :
- Crystals, Volume 13, Issue 2, Pages: 241
- Publication Year :
- 2023
- Publisher :
- MDPI AG, 2023.
-
Abstract
- This paper presents a zero-optical-distance mini-LED backlight with cone-shaped light coupling microstructures to achieve an ultra-thin backlight architecture (~0.1 mm thickness) by combining the characteristics of direct-lit and edge-lit backlights. There is no gap between the light guide plate (LGP) and the reflector, as well as between the LGP and the mini-LED embedded in the reflector. The illuminance uniformity and light extraction efficiency (LEE) of the whole structure reach 91.47% and 77.09%, respectively. Nine sub-modules are spliced together to realize 2D local dimming with 0.29% crosstalk. The structure shows high optical performance while reducing the thickness of the backlight module, which is of great significance for the development of mini-LED backlights.
Details
- ISSN :
- 20734352
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Crystals
- Accession number :
- edsair.doi.dedup.....3adb5c50cf62fafc095fb749451465ca
- Full Text :
- https://doi.org/10.3390/cryst13020241