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White‐Light‐Emitting Diodes with Quantum Dot Color Converters for Display Backlights
Author(s) -
Jang Eunjoo,
Jun Shinae,
Jang Hyosook,
Lim Jungeun,
Kim Byungki,
Kim Younghwan
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201000525
Subject(s) - backlight , ntsc , materials science , light emitting diode , optoelectronics , quantum dot , liquid crystal display , diode , white light , color rendering index , optics , converters , computer science , physics , telecommunications , quantum mechanics , high definition television , voltage
Highly luminescent, multiply passivated green‐ and red‐light‐emitting quantum dots are used as color converters in InGaN blue LEDs to achieve external quantum efficiencies of 72% and 34%, respectively. White QD‐LEDs prepared for a display backlight are shown to have an efficacy of 41 lm W −1 and color reproducibility of 100% compared to the NTSC standard in CIE 1931. Finally, a 46 inch LCD TV panel (see image) using the QD‐LED backlight is successfully demonstrated for the first time.