Flexible/curved backlight module with quantum-dots microstructure array for liquid crystal displays.

We present a backlight module (BLM) employing a photoluminescent quantum-dot microstructure array for flexible/curved liquid crystal displays (LCDs). Differently sized quantum-dot (QD) BLMs were prepared based on the theoretical spectral model and microstructure fabrication process. A 27-inch curved prototype showed a wide color gamut of 122.79% under the National Television Systems Committee standard while achieving high brightness of over 4000 cd/m2 and brightness/color uniformity of 85.21%/9.2 × 10-3. An LCD monitor prototype equipped with the proposed BLM was also assembled and tested, which showed higher visual performance when compared with a common commercial monitor. This method produces QD BLMs without the need of additional optical elements, and has good compatibility with traditional processes.

[1]  Takamitsu Okumura,et al.  Highly-efficient backlight for liquid crystal display having no optical films , 2003 .

[2]  Eun Kyung Lee,et al.  Full-colour quantum dot displays fabricated by transfer printing , 2011 .

[3]  Yongtian Wang,et al.  In Situ Fabrication of Halide Perovskite Nanocrystal‐Embedded Polymer Composite Films with Enhanced Photoluminescence for Display Backlights , 2016, Advanced materials.

[4]  Peter M. Allen,et al.  Quantum dots: The ultimate down‐conversion material for LCD displays , 2015 .

[5]  Ernie Lee,et al.  66.1: Distinguised Paper: A High‐Efficiency Wide‐Color‐Gamut Solid‐State Backlight System for LCDs Using Quantum Dot Enhancement Film , 2012 .

[6]  M. Bawendi,et al.  (CdSe)ZnS Core-Shell Quantum Dots - Synthesis and Characterization of a Size Series of Highly Luminescent Nanocrystallites , 1997 .

[7]  Shin-Tson Wu,et al.  Realizing Rec. 2020 Color Gamut with Quantum Dot Displays Color Shift Reduction of a Multi-domain Ips-lcd Using Rgb-led Backlight, " Opt , 2022 .

[8]  Shin-Tson Wu,et al.  Going beyond the limit of an LCD’s color gamut , 2017, Light: Science & Applications.

[9]  E. Jang,et al.  Bright and stable alloy core/multishell quantum dots. , 2013, Angewandte Chemie.

[10]  Takashi Takeda,et al.  Wide Color Gamut Backlight for Liquid Crystal Displays Using Three-Band Phosphor-Converted White Light-Emitting Diodes , 2009 .

[11]  V. Bulović,et al.  Emergence of colloidal quantum-dot light-emitting technologies , 2012, Nature Photonics.

[12]  David Battaglia,et al.  Colloidal InP nanocrystals as efficient emitters covering blue to near-infrared. , 2007, Journal of the American Chemical Society.

[13]  Yingbai Yan,et al.  Novel integrated light-guide plates for liquid crystal display backlight , 2005 .

[14]  Wenhao Liu,et al.  Quantum Dots for LED Downconversion in Display Applications , 2013 .

[15]  Qibing Pei,et al.  Emulsion Synthesis of Size-Tunable CH3NH3PbBr3 Quantum Dots: An Alternative Route toward Efficient Light-Emitting Diodes. , 2015, ACS applied materials & interfaces.

[16]  D. Dorfs,et al.  Segmented CdSe@CdS/ZnS Nanorods Synthesized via a Partial Ion Exchange Sequence , 2014 .

[17]  K. Käläntär.  Modified functional light-guide plate for backlighting transmissive LCDs , 2003 .

[18]  Mike Jun,et al.  P.91: Adobe RGB LCD Monitor with 3 Primary Colors by Deep Green Color Filter Technology , 2013 .

[19]  Masayuki Yokota,et al.  Polymer-stabilized liquid crystal blue phases , 2002, Nature materials.

[20]  Tsuneo Kusunoki,et al.  59.1: A Backlight System with a Phosphor Sheet Providing both Wider Color Gamut and Higher Efficiency , 2013 .

[21]  Hao-Chung Kuo,et al.  Resonant‐Enhanced Full‐Color Emission of Quantum‐Dot‐Based Display Technology Using a Pulsed Spray Method , 2012 .

[22]  I. Abdullah,et al.  Influence of polymer matrix on nonlinear optical properties and optical limiting threshold of polymer-ZnO nanocomposites , 2016, Journal of Materials Science: Materials in Electronics.

[23]  Shin-Tson Wu,et al.  Emerging Quantum-Dots-Enhanced LCDs , 2014, Journal of Display Technology.

[24]  S. Coe‐Sullivan.  Optoelectronics: Quantum dot developments , 2009 .

[25]  Munisamy Anandan.  Progress of LED backlights for LCDs , 2008 .

[26]  Xiaogang Peng,et al.  Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility , 1997 .

[27]  J. Kurtin,et al.  12.5L: Late‐News Paper: Quantum Dots for High Color Gamut LCD Displays using an On‐Chip LED Solution , 2014 .

[28]  Sang-Wook Kim,et al.  Performance of light-emitting-diode based on quantum dots. , 2013, Nanoscale.

[29]  Cuong Dang,et al.  Light Extraction Efficiency Enhancement of Colloidal Quantum Dot Light‐Emitting Diodes Using Large‐Scale Nanopillar Arrays , 2014 .

[30]  Jeff Yurek,et al.  P‐119: High Efficiency LCDs using Quantum Dot Enhancement Films , 2014 .

[31]  Xiao Wei Sun,et al.  Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering. , 2010, Optics letters.

[32]  Yasuhiro Ukai.  5.2: Invited Paper: TFT‐LCDs as the Future Leading Role in FPD , 2013 .

[33]  Guanjun Tan,et al.  Optimized blue-phase liquid crystal for field-sequential-color displays , 2017 .

[34]  Young-Joo Kim,et al.  Realization of 95% of the Rec. 2020 color gamut in a highly efficient LCD using a patterned quantum dot film. , 2017, Optics express.

[35]  Byungki Kim,et al.  White‐Light‐Emitting Diodes with Quantum Dot Color Converters for Display Backlights , 2010, Advanced materials.

[36]  J. Oh,et al.  Analysis of wide color gamut of green/red bilayered freestanding phosphor film-capped white LEDs for LCD backlight. , 2015, Optics express.