Chinese Journal of Liquid Crystals and Displays, Volume. 40, Issue 7, 983(2025)

Design of hierarchical weight assignment for Mini-LED backlight extraction with low partition zones

Hao LIANG1, Shuwang CHANG1、*, Zhenghan SHEN2, Jinwei ZHAI1, Zeyu ZHANG1, and Gaorui QIE1
Author Affiliations
  • 1School of Mechanical,Electrical & Information Engineering,Shandong University,Weihai 264209,China
  • 2School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 611756,China
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    Figures & Tables(13)
    Architecture of the local dimming system
    Schematic diagram of the partition
    Flow chart of the HWA
    Pseudocode of HWA
    Schematic diagram of the convolution process
    Comparison diagram of the simulation
    Comparison diagram of backlight diffusion
    Comparison of the images before and after pixel compensation
    System schematic diagram of the HWA on the Gowin FPGA
    Display effect diagram of the FPGA
    Images for performance evaluation
    • Table 1. Simulation parameters in extracting backlight brightness for HWA

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      Table 1. Simulation parameters in extracting backlight brightness for HWA

      RateGradeWeight
      R1<Rate≤1Grade1W1=0.8
      R2<Rate≤R1Grade2W2=1
      0<Rate≤R2Grade3W3=1.2
    • Table 2. Comparison of performance parameters

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      Table 2. Comparison of performance parameters

      Group NumberSSIMPSNR/dBConsumption/W
      AverageMaxHWAAverageMaxHWAAverageMaxHWA
      10.903 50.926 40.929 461.302 243.128 563.461 55.37.54.5
      20.960 40.966 30.981 239.394 937.700 349.186 75.78.35.4
      30.936 40.911 80.969 641.405 436.100 047.710 95.78.25.1
      40.894 60.946 40.970 139.907 738.060 948.844 55.47.75.1
      50.952 70.927 20.971 461.875 543.265 467.320 15.67.64.5
      60.920 70.957 20.969 452.051 850.410 960.924 75.16.94.7
      70.950 90.971 90.977 653.377 752.330 156.658 85.26.74.6
      80.928 00.887 10.962 053.942 038.345 658.001 95.57.74.7
      90.927 20.965 50.968 956.067 053.216 961.277 25.47.24.6
      100.938 20.929 80.972 361.044 949.395 266.989 75.27.14.6
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    Hao LIANG, Shuwang CHANG, Zhenghan SHEN, Jinwei ZHAI, Zeyu ZHANG, Gaorui QIE. Design of hierarchical weight assignment for Mini-LED backlight extraction with low partition zones[J]. Chinese Journal of Liquid Crystals and Displays, 2025, 40(7): 983

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    Paper Information

    Category:

    Received: Apr. 8, 2025

    Accepted: --

    Published Online: Aug. 11, 2025

    The Author Email: Shuwang CHANG (shwchang@sdu.edu.cn)

    DOI:10.37188/CJLCD.2025-0079

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