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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. 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. 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. 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. 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

doi: 10.37188/CO.2021-0058
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

Funds: Supported by National Key R&D Program (No. 2017YFB0404600)
More Information
    Author Bio:

    Honglei Ji obtained his MA.Eng degree in 2007 from Changchun University of Science and Technology. He is national 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 mobile: 13902465270

    Shangjun Cheng obtained his B.E. degree in 2019 from Beijing Institute of Technology (BIT). He is currently working as a master with Prof. Haizheng Zhong. His project is focused on the research of perovskite quantum dot based composites for photonics and optoelectronics applications. E-mail: 3120191108@bit.edu.cn

    Pengfei Li obtained his MA.Eng 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

    Haizheng Zhong obtained his B.E. 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

    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。
  • Figure  1.  (a)Schematic diagram for solid color experiment. (b) Schematic diagram for multicolor experiment

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

    Figure  3.  Comparison of theoretical calculation value and measured value of brightness ratio between QD/YAG in solid color experiment.

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

    Figure  5.  Preferential ratio under the same perceived brightness

    Table  1.   The key parameters of test

    Experimental environment
    Viewing distance2 meters
    Viewer positionHorizontal midline
    Ambient lightIlluminance105 lx-156 lx
    Color temperature5500 k
    Source channelHDMI
    Luminance200-500 nit
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  • 网络出版日期:  2021-05-28

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