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1.厦门理工学院 光电与通信工程学院,福建 厦门 361000
2.天马微电子股份有限公司 消费品质量部,福建 厦门 361000
[ "李愿愿(1996—),女,安徽阜阳人,硕士研究生,2019年于福建江夏学院获得学士学位,主要从事液晶显示屏的不良改善研究。E-mail: 1874771194@qq.com" ]
[ "程再军(1980—),男,河南光山人,博士,副教授,2011年于厦门大学获得博士学位,主要从事基于MEMS的微能源和微器件方面的研究。E-mail:2011111002@xmut.edu.cn" ]
收稿日期:2022-01-04,
修回日期:2022-02-02,
纸质出版日期:2022-04-05
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李愿愿, 程再军, 颜华生, 等. 液晶显示屏挤压漏光的分析及改善[J]. 液晶与显示, 2022,37(4):475-482.
Yuan-yuan LI, Zai-jun CHENG, Hua-sheng YAN, et al. Analysis and improvement of LCD light leakage caused by pressing[J]. Chinese journal of liquid crystals and displays, 2022, 37(4): 475-482.
李愿愿, 程再军, 颜华生, 等. 液晶显示屏挤压漏光的分析及改善[J]. 液晶与显示, 2022,37(4):475-482. DOI: 10.37188/CJLCD.2022-0003.
Yuan-yuan LI, Zai-jun CHENG, Hua-sheng YAN, et al. Analysis and improvement of LCD light leakage caused by pressing[J]. Chinese journal of liquid crystals and displays, 2022, 37(4): 475-482. DOI: 10.37188/CJLCD.2022-0003.
为提高液晶面板挤压漏光最大临界力值和抗挤压能力,通过对液晶面板挤压漏光机理进行分析,结合企业实际生产,采用实验设计(DOE)筛选主要因子。DOE结果表明,挤压漏光的主要因子有柱状隔垫物(Photo spacer,PS)尺寸、黑色矩阵(Black Matrix,BM)宽度、PS站位以及平坦化层(PLN)厚度。在实际生产过程中对挤压漏光进行改善设计实验,结果表明:增加PS的尺寸能有效提升面板抗击压能力的32.69%,且尺寸增大后,其弹性回复率增加了4.4%,能有效降低挤压漏光的发生;增加3 μm BM宽度设计的面板挤压漏光平均临界值提升了30.61%;改变PS站位整体居中设计较PS偏右上设计的面板的挤压漏光平均临界力值提升了33.33%;PLN厚度减小0.6 μm能有效提升27.08%的面板挤压漏光临界力值。
In order to improve the maximum critical force value and anti-pressed capacity of the liquid crystal panel, by the mechanism analysis of LCD’s light leakage due to the pressing, and combining with the actual production, the main factors are screened using the method of design of experiments (DOE). The DOE results show that the main factors of pressed leakage are the size of the photo spacer (PS), width of black matrix (BM), PS locations, and planarization-layer (PLN) thickness. Improved design experiments are carried out in the actual production process and the results show that the panel anti-pressing capacity can be effectively enhanced by 32.69% by increasing the size of the PS, and its elastic recovery rate can be increased by 4.4%, which can effectively reduce the occurrence of light leakage. Also, by increasing BM width by 3 μm, changing the PS locations’ design from upper right to center and reducing the thickness of PLN by 0.6 μm, the average critical value of the panels’ pressing leakage can be increased by 30.61%, 33.33% and 27.08%, respectively.
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