Optoelectronic Technology, Volume. 42, Issue 2, 89(2022)

Research on TFT‑LCD Life Test for 3D Printing

Shian ZHANG1, Zhongbo YANG2, Caiyou CHEN2, Xianlong FU2, Huizhong ZHU1, and Chengqun WANG1
Author Affiliations
  • 1Beijing Smart‑aero Display Technology Co.,Ltd , Beijing 0076, CHN
  • 2Ordos Yuansheng Optoelectronics Limited Corporation , Ordos Inner Mongolia, 01700, CHN
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    Figures & Tables(18)
    UV absorption characteristics of different materials[1]
    UV absorption spectrum[1]
    Ripple defect on Panel
    Mark defect on Panel
    Schematic of 3D printing
    Schematic of LCD aging device for 3D printing
    Degradation trend for interval and continuous UV irradiation
    Trend of contrast for interval and continuous UV irradiation
    Linear regression model of continuous UV irradiation relative to interval UV irradiation
    Probability graph under Weibull distribution
    Probability graph under exponential distribution
    Goodness of fit under each distribution
    Goodness of fit of regression model
    Unary linear regression model
    Reliability and maintenance prediction
    L0&L255 for interval and continuous UV irradiation
    • Table 1. Life test plan of liquid crystal display screen for light-curing 3D printing

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      Table 1. Life test plan of liquid crystal display screen for light-curing 3D printing

      实验方案试验方案1试验方案2试验方案2
      应力水平405 nm,25±3 ℃,60%±5%RH,UV光照能量120 000 μw/cm2,光照间隔时间开5 s关5 s405 nm,25±3 ℃,60%±5%RH,UV光照能量120 000 μw/cm2,持续照射405 nm,25±3 ℃,60%±5%RH,UV光照能量120 000 μw/cm2,光照间隔时间开5 s关5 s
      实验方法恒定应力,定时结尾24 h恒定应力,定时结尾24 h恒定应力
      失效判定L0>30 μw/cm2CR≤270L0>30 μw/cm2CR≤270CR≤270停止试验并记录时间
      样品数量1 pcs1 pcs10 pcs
      记录频次1次/6 h1次/6 h30 h/次,从200 h开始记录
    • Table 2. Data of failure probability

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      Table 2. Data of failure probability

      序号失效时间范围/h中位秩

      阶段

      失效数

      累积

      失效数

      剩余数量

      样品

      总量

      瞬时

      失效率/(%)

      可靠度R/(%)

      累积

      失效率F/(%)

      x=ln(t)y=ln(ln(1/1-F(t))))
      1200~230215019100.0090.010.05.370 638 028-2.250 367 327
      2230~260245237101.0070.030.05.501 258 211-1.030 930 433
      3260~290275037100.0070.030.05.616 771 098-1.030 930 433
      4290~320305146100.5060.040.05.720 311 777-0.671 726 992
      5320~350335155100.5050.050.05.814 130 532-0.366 512 921
      6350~380365164100.5040.060.05.899 897 354-0.087 421 572
      7380~410395282101.0020.080.05.978 885 7650.475 884 995
      8410~440425191100.00510.090.06.052 089 1690.834 032 445
      9>440-1100100.0050.0100.0--
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    Shian ZHANG, Zhongbo YANG, Caiyou CHEN, Xianlong FU, Huizhong ZHU, Chengqun WANG. Research on TFT‑LCD Life Test for 3D Printing[J]. Optoelectronic Technology, 2022, 42(2): 89

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    Paper Information

    Category: Technology and Measurement

    Received: Nov. 17, 2021

    Accepted: --

    Published Online: Jul. 29, 2022

    The Author Email:

    DOI:10.19453/j.cnki.1005-488x.2022.02.002

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