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author:

Zhang, Wenyan (Zhang, Wenyan.) [1] | Chen, Yu (Chen, Yu.) [2] | Cai, Junhu (Cai, Junhu.) [3] | Deng, Liwen (Deng, Liwen.) [4] | Xu, Sheng (Xu, Sheng.) [5] (Scholars:徐胜) | Ye, Yun (Ye, Yun.) [6] (Scholars:叶芸) | Yan, Qun (Yan, Qun.) [7] | Guo, Tailiang (Guo, Tailiang.) [8] (Scholars:郭太良) | Chen, Enguo (Chen, Enguo.) [9] (Scholars:陈恩果)

Indexed by:

EI Scopus SCIE

Abstract:

Mini-LED backlights energized by quantum-dot color conversion (QDCC) hold great potential for technological breakthroughs of liquid crystal displays. However, luminance uniformity issues should still be urgently solved owing to the large interval of direct-lit mini-LEDs, especially when covering with a QDCC film (QDCCF) with uniform thickness. Herein, we propose a uniformity improvement approach of mini-LED backlights by employing a QDCCF with nonuniform thickness based on the Lambertian distribution of mini-LEDs, which is demonstrated by screen-printing preparation and ray-tracing simulation. Experimental results show that the luminance uniformity of the nonuniform QDCCF can reach 89.91%, which is 24.92% higher than the uniform one. Ray-tracing simulation further elaborates the mechanism of this significant improvement. Finally, by employing this nonuniform QDCCF, a mini-LED backlight prototype is assembled and achieves high uniformity of 92.15%, good white balance with color coordinates of (0.3482, 0.3137), and high color gamut of 109% NTSC. This work should shed some new light on mini-LED-based display technology.(c) 2023 Optica Publishing Group

Keyword:

Community:

  • [ 1 ] [Zhang, Wenyan]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 2 ] [Chen, Yu]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 3 ] [Cai, Junhu]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 4 ] [Deng, Liwen]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 5 ] [Xu, Sheng]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 6 ] [Ye, Yun]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 7 ] [Yan, Qun]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 8 ] [Guo, Tailiang]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 9 ] [Chen, Enguo]Fuzhou Univ, Coll Phys & Informat Engn, Inst Optoelect Display, Natl & Local United Engn Lab Flat Panel Display Te, Fuzhou 350108, Peoples R China
  • [ 10 ] [Xu, Sheng]Fujian Sci & Technol, Innovat Lab Optoelect Informat China, Fuzhou 350100, Peoples R China
  • [ 11 ] [Ye, Yun]Fujian Sci & Technol, Innovat Lab Optoelect Informat China, Fuzhou 350100, Peoples R China
  • [ 12 ] [Yan, Qun]Fujian Sci & Technol, Innovat Lab Optoelect Informat China, Fuzhou 350100, Peoples R China
  • [ 13 ] [Guo, Tailiang]Fujian Sci & Technol, Innovat Lab Optoelect Informat China, Fuzhou 350100, Peoples R China
  • [ 14 ] [Chen, Enguo]Fujian Sci & Technol, Innovat Lab Optoelect Informat China, Fuzhou 350100, Peoples R China

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Source :

OPTICS LETTERS

ISSN: 0146-9592

Year: 2023

Issue: 21

Volume: 48

Page: 5643-5646

3 . 1

JCR@2023

3 . 1 0 0

JCR@2023

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 13

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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