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Illustrating the Helmholtz-Kohlrausch effect of quantum dots enhanced LCD through a comparative study

JI Hong-lei CHENG Shang-jun LI Peng-fei ZHANG Yan GE Zi-yi ZHONG Hai-zheng

季洪雷, 程尚君, 李鹏飞, 张彦, 葛子义, 钟海政. 量子点背光液晶显示技术的亥姆霍兹-科尔劳施效应[J]. 中国光学(中英文), 2022, 15(1): 132-143. doi: 10.37188/CO.2021-0058
引用本文: 季洪雷, 程尚君, 李鹏飞, 张彦, 葛子义, 钟海政. 量子点背光液晶显示技术的亥姆霍兹-科尔劳施效应[J]. 中国光学(中英文), 2022, 15(1): 132-143. doi: 10.37188/CO.2021-0058
JI Hong-lei, CHENG Shang-jun, LI Peng-fei, ZHANG Yan, GE Zi-yi, ZHONG Hai-zheng. Illustrating the Helmholtz-Kohlrausch effect of quantum dots enhanced LCD through a comparative study[J]. Chinese Optics, 2022, 15(1): 132-143. doi: 10.37188/CO.2021-0058
Citation: JI Hong-lei, CHENG Shang-jun, LI Peng-fei, ZHANG Yan, GE Zi-yi, ZHONG Hai-zheng. Illustrating the Helmholtz-Kohlrausch effect of quantum dots enhanced LCD through a comparative study[J]. Chinese Optics, 2022, 15(1): 132-143. doi: 10.37188/CO.2021-0058

量子点背光液晶显示技术的亥姆霍兹-科尔劳施效应

详细信息
  • 中图分类号: TP394.1; TH691.9

Illustrating the Helmholtz-Kohlrausch effect of quantum dots enhanced LCD through a comparative study

doi: 10.37188/CO.2021-0058
Funds: Supported by National Key R&D Program (No. 2017YFB0404600)
More Information
    Author Bio:

    Ji Hong-lei (1980—), male, born in Baicheng City, Jilin province. He obtained his Master degree in 2007 from Changchun University of Science and Technology. He is senior engineer and now working at TCL Electronics R&D Center. His project is focused on the research of new materials and technologies for display technology. E-mail: jihl@tcl.com

    Cheng Shang-jun (1997—), male, born in Yining, XinJiang Province, he obtained his Bachelor′s degree in 2019 from Beijing Institute of Technology (BIT). His project is focused on the research of perovskite quantum dot based composites for photonic and optoelectronic applications. E-mail: 3120191108@bit.edu.cn

    Li Peng-fei (1994—), male, born in Handan City, Hebei Province. He obtained his Master degree in 2019 from Harbin Institute of Technology. He is now a electronic R&D engineer at TCL. He mainly engaged in the research of visual perception. E-mail: pengfei7.li@tcl.com

    Zhong Hai-zheng (1981—), male, born in Qinghe City, Hebei Province. He obtained his Bachelor′s degree in 2003 from Jilin University, and then undertook his Ph.D. studies at the Institute of Chemistry, Chinese Academy of Sciences (ICCAS) with Prof. Yongfang Li from 2003 to 2008. His current research interests are in the area of colloidal quantum dots for photonics and optoelectronics. E-mail: hzzhong@bit.edu.cn

    Corresponding author: pengfei7.li@tcl.comhzzhong@bit.edu.cn
  • 摘要: 亥姆霍兹-科尔劳施效应(简称H-K效应)指的是人眼对色光的感知亮度随着色纯度的增加而提升的现象。量子点背光技术可显著提升液晶显示的色域和视觉感知亮度,已经在众多显示产品中开始应用。本论文通过观看者亮度感知实验,对比了YAG荧光粉白光LED背光电视(YAG电视)和量子点背光电视(量子点电视)的H-K效应差异,根据Kaiser模型与Nayatani模型分析纯色实验的测试结果,并通过彩色实验探究了显示器的色域对感知亮度与主观偏好的影响。实验结果表明:量子点电视具有更为显著的H-K效应,视觉感知亮度明显高于传统YAG电视;在同样的感知亮度下,量子点电视的纯色R、G的物理亮度仅为YAG电视的75%、86%;鲜艳彩色画面的物理亮度为YAG电视的74%~88%;在相同感知亮度下,高色域的量子点电视更受欢迎,并且喜好趋势将随着亮度的增加而增加。上述结果对于健康显示的发展具有重要指导意义。

     

  • 图 1  (a)纯色实验测试示意图;(b)彩色实验测试示意图

    Figure 1.  (a)Schematic diagram for the solid color experiment; (b) schematic diagram for the multicolor experiment

    图 2  量子点电视与YAG电视的(a)白光光谱及(b)色域图

    Figure 2.  (a)White light spectrum and (b) color gamut of QLED TV and YAG-LED TV

    图 3  纯色实验QD/YAG的理论值与实测值对比

    Figure 3.  Comparison of theoretical calculation results and measured values of brightness ratio (QD/YAG) in solid color experiment

    图 4  彩色实验不同图片QD/YAG实测值对比曲线

    Figure 4.  The curves of QD/YAG of different pictures in multicolor experiment

    图 5  相同感知亮度下的主观喜好比例

    Figure 5.  Preferential ratio under the same perceived brightness

    表  1  Key parameters of test environment

    Table  1.   Key parameters of test environment

    Experimental environmentParameters
    Viewing distance2 m
    Viewer positionHorizontal midline
    Ambient light Illuminance 105~156 lx
    Color temperature 5500 K
    Source channel HDMI
    Luminance 200~500 nit
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出版历程
  • 收稿日期:  2021-03-17
  • 修回日期:  2021-04-27
  • 录用日期:  2021-05-28
  • 网络出版日期:  2021-05-28
  • 刊出日期:  2022-01-19

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