Inkjet Printed Quantum Dots Color Conversion Layers for Full-Color Micro-LED Displays

被引:26
作者
Qin, Feng [1 ,2 ]
Liu, Cao [2 ]
Wu, Wenhui [2 ]
Peng, Wenxiang [2 ]
Huo, Sitao [2 ]
Ye, Jiandong [1 ]
Gu, Shulin [1 ]
机构
[1] Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China
[2] Shanghai Tianma Microelect Co Ltd, Shanghai 201201, Peoples R China
关键词
Micro-LED; Quantum dots; Color conversion; Inkjet printing; LIGHT; EMISSION; EFFICIENCY;
D O I
10.1007/s13391-022-00373-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
With the ever-growing demands for larger size and high resolution displays, Micro-light-emitting diode (Micro-LED) display with quantum dots (QDs) film as color conversion layers (CCLs) has become one of the most promising candidates of future display for its advantages in low power consumption and wide color range. In this study, we report a novel full-color display based on blue Micro LED, which has patterned red and green QDs color conversion (QDCC) layers fabricated by inkjet printing (IJP). A structure of double-layer bank was designed to reduce color deviation, prevent crosstalk, and flatten the QDCC layer. By optimizing the thickness of the red/green QDCC layers and the wavelength of blue Micro LED backlights, a full-color QDCC-LED display with 228 PPI resolution and size of 1.11-inch was successfully fabricated and showed superb performance. We not only effectively reduced crosstalk, but also improved the color conversion efficiency of QDs. In addition, this QDCC-LED display prepared by embedded bonding process shows a color gamut of 107.53% NTSC.
引用
收藏
页码:19 / 28
页数:10
相关论文
共 40 条
[1]   Microscale Perovskite Quantum Dot Light-Emitting Diodes (Micro-PeLEDs) for Full-Color Displays [J].
Bai, Wenhao ;
Xuan, Tongtong ;
Zhao, Haiyan ;
Shi, Shuchen ;
Zhang, Xiaoyu ;
Zhou, Tianliang ;
Wang, Le ;
Xie, Rong-Jun .
ADVANCED OPTICAL MATERIALS, 2022, 10 (12)
[2]   Emissive displays with transfer-printed assemblies of 8 μm x 15 μm inorganic light-emitting diodes [J].
Bower, Christopher A. ;
Meitl, Matthew A. ;
Raymond, Brook ;
Radauscher, Erich ;
Cok, Ronald ;
Bonafede, Salvatore ;
Gomez, David ;
Moore, Tanya ;
Prevatte, Carl ;
Fisher, Brent ;
Rotzoll, Robert ;
Melnik, George A. ;
Fecioru, Alin ;
Trindade, Antonio Jose .
PHOTONICS RESEARCH, 2017, 5 (02) :A23-A29
[3]   Impact of surface recombination on efficiency of III-nitride light-emitting diodes [J].
Bulashevich, Kirill A. ;
Karpov, Sergey Yu. .
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2016, 10 (06) :480-484
[4]   Resonant-Enhanced Full-Color Emission of Quantum-Dot-Based Display Technology Using a Pulsed Spray Method [J].
Chen, Kuo-Ju ;
Chen, Hsin-Chu ;
Tsai, Kai-An ;
Lin, Chien-Chung ;
Tsai, Hsin-Han ;
Chien, Shih-Hsuan ;
Cheng, Bo-Siao ;
Hsu, Yung-Jung ;
Shih, Min-Hsiung ;
Tsai, Chih-Hao ;
Shih, His-Hsin ;
Kuo, Hao-Chung .
ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (24) :5138-5143
[5]  
Chen O, 2013, NAT MATER, V12, P445, DOI [10.1038/NMAT3539, 10.1038/nmat3539]
[6]   GaN micro-light-emitting diode arrays with monolithically integrated sapphire microlenses [J].
Choi, HW ;
Liu, C ;
Gu, E ;
McConnell, G ;
Girkin, JM ;
Watson, IM ;
Dawson, MD .
APPLIED PHYSICS LETTERS, 2004, 84 (13) :2253-2255
[7]   Improved Color Purity of Monolithic Full Color Micro-LEDs Using Distributed Bragg Reflector and Blue Light Absorption Material [J].
Chu, Shao-Yu ;
Wang, Hung-Yu ;
Lee, Ching-Ting ;
Lee, Hsin-Ying ;
Laing, Kai-Ling ;
Kuo, Wei-Hung ;
Fang, Yen-Hsiang ;
Lin, Chien-Chung .
COATINGS, 2020, 10 (05)
[8]   Tripling the Optical Efficiency of Color-Converted Micro-LED Displays with Funnel-Tube Array [J].
Gou, Fangwang ;
Hsiang, En-Lin ;
Tan, Guanjun ;
Lan, Yi-Fen ;
Tsai, Cheng-Yeh ;
Wu, Shin-Tson .
CRYSTALS, 2019, 9 (01) :1-10
[9]   Resonant-enhanced full-color emission of quantum-dot-based micro LED display technology [J].
Han, Hau-Vei ;
Lin, Huang-Yu ;
Lin, Chien-Chung ;
Chong, Wing-Cheung ;
Li, Jie-Ru ;
Chen, Kuo-Ju ;
Yu, Peichen ;
Chen, Teng-Ming ;
Chen, Huang-Ming ;
Lau, Kei-May ;
Kuo, Hao-Chung .
OPTICS EXPRESS, 2015, 23 (25) :32504-32515
[10]   Inkjet-Printed Salt-Encapsulated Quantum Dot Film for UV-Based RGB Color-Converted Micro-Light Emitting Diode Displays [J].
Ho, Shih-Jung ;
Hsu, Hui-Ching ;
Yeh, Chang-Wei ;
Chen, Hsueh-Shih .
ACS APPLIED MATERIALS & INTERFACES, 2020, 12 (29) :33346-33351