Chinese Journal of Liquid Crystals and Displays, Volume. 37, Issue 4, 475(2022)

Analysis and improvement of LCD light leakage caused by pressing

Yuan-yuan LI1,2, Zai-jun CHENG1、*, Hua-sheng YAN2, Xu ZHANG1,2, and Jian-ming WANG1
Author Affiliations
  • 1Institute of Optoelectronics and Communication Engineering,Xiamen University of Technology,Xiamen 361000,China
  • 2Consumer Quality Department of Tianma Microelectronics Co.,Ltd.,Xiamen 361000,China
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    Figures & Tables(15)
    (a)PS fixture test point;(b)Sample fixation method.
    Macro picture(a)and micro picture(b)of red spot
    Top view and side view of PS
    Schematic diagram of liquid crystal panel pressing
    Standardization effect of pressed leakage influence factor
    Residual diagram of pressed leakage influence factor
    Panel anti-pressing capability of different PS size design
    Panel anti-pressing capability of different BM width design
    Microscopic map of PS different station design
    Panel anti-pressing capability of different PS stamp design
    Different PLN thickness SEM map
    Panel anti-pressing capability of different PLN thickness design
    • Table 1. DOE part factor experiment set parameters

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      Table 1. DOE part factor experiment set parameters

      PS尺寸/μmBM宽度/μmPS站位PLN厚度/μm
      参数下限1525偏右上2.7
      参数上限2331居中3.3
    • Table 2. Partial factor experiment design and experimental output

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      Table 2. Partial factor experiment design and experimental output

      标准序运行序PS尺寸/μmBM宽度/μmPS站位PLN厚度/μm面板挤压漏光最大临界值/N
      412331偏右上2.763
      721531居中2.765
      232325偏右上3.354
      141525偏右上2.751
      852331居中3.366
      361531偏右上3.353
      672325居中2.765
      581525居中3.352
    • Table 3. Comparison of different product PS elastic recovery rate

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      Table 3. Comparison of different product PS elastic recovery rate

      原设计增加3 μm设计
      编号hmax/μmhp/μm弹性回复率/%编号hmax/μmhp/μm弹性回复率/%
      10.467 80.069 885.0810.569 50.064 688.66
      20.500 80.079 884.0720.999 10.092 2390.77
      30.483 20.076 684.1530.992 50.095 590.38
      40.409 70.050 187.7740.963 80.084 191.27
      50.474 90.052 488.9750.564 10.051 390.91
      Ave0.467 30.065 786.00Ave0.817 80.077 590.40
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    Yuan-yuan LI, Zai-jun CHENG, Hua-sheng YAN, Xu ZHANG, Jian-ming WANG. Analysis and improvement of LCD light leakage caused by pressing[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(4): 475

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    Paper Information

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    Received: Jan. 4, 2022

    Accepted: --

    Published Online: Jun. 20, 2022

    The Author Email: Zai-jun CHENG (2011111002@xmut.edu.cn)

    DOI:10.37188/CJLCD.2022-0003

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