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Highly Stable White Light-Emitting Diodes Based on Quantum-Dots Dispersed Into the Backlight Lens for Display Backlight
- Source :
- IEEE Photonics Journal, Vol 11, Iss 3, Pp 1-7 (2019)
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- A novel package structure has been developed to fabricate quantum-dot (QD) white light-emitting diodes (WLEDs) by dispersing QDs into the backlight lens and integrating them with blue light-emitting diode to form white light. For this in-lens encapsulation structure, the luminous efficiency and lifetime of QD-WLEDs can reach 90 lm/W and 1000 h, which is 25 times longer than that of QD-WLEDs with on-chip encapsulation structure. Furthermore, a 32-inch prototype liquid crystal display TV shows a wide color gamut of 108% under the National Television Systems Committee standard with this in-lens encapsulation structure. The improvement performance should be attributed to providing a hermetic encapsulation environment preventing oxygen and water from reacting with the QDs and reducing the temperature of QDs due to in-lens package structure. Our results demonstrate that the in-lens solution can be a promising application in display backlight.
- Subjects :
- lcsh:Applied optics. Photonics
Materials science
Quantum-dots (QDs)
02 engineering and technology
Backlight
01 natural sciences
law.invention
010309 optics
on-chip
Gamut
display backlight
law
0103 physical sciences
White light
lcsh:QC350-467
Electrical and Electronic Engineering
in-lens
Diode
Liquid-crystal display
business.industry
lcsh:TA1501-1820
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
Quantum dot
Optoelectronics
white light-emitting diodes (WLEDs)
0210 nano-technology
business
Luminous efficacy
lcsh:Optics. Light
Subjects
Details
- ISSN :
- 19430647
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Journal
- Accession number :
- edsair.doi.dedup.....9e5b91cf043916c0bbd0dd4c4d2fa5c8
- Full Text :
- https://doi.org/10.1109/jphot.2019.2916084