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[ "周波(1985-), 男, 河北保定人, 硕士, 2010年于南开大学获得硕士学位, 主要从事TFT-LCD工艺技术方面的研究。E-mail:zhoubo@boe.com.cn" ]
[ "王祺(1989-), 男, 山东日照人, 硕士, 2016年于天津大学获得硕士学位, 主要从事TFT-LCD工艺技术方面的研究。E-mail:wqi@boe.com.cn" ]
收稿日期:2019-06-18,
修回日期:2019-11-04,
录用日期:2019-11-4,
纸质出版日期:2020-02-05
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周波, 王祺, 宋勇志, 等. TFT-LCD中液晶取向异常亮点机理研究及改善[J]. 液晶与显示, 2020,35(2):115-121.
Bo ZHOU, Qi WANG, Yong-zhi SONG, et al. Research and improvement of bright dot caused by abnormal liquid crystal alignment on TFT-LCD[J]. Chinese journal of liquid crystals and displays, 2020, 35(2): 115-121.
周波, 王祺, 宋勇志, 等. TFT-LCD中液晶取向异常亮点机理研究及改善[J]. 液晶与显示, 2020,35(2):115-121. DOI: 10.3788/YJYXS20203502.0115.
Bo ZHOU, Qi WANG, Yong-zhi SONG, et al. Research and improvement of bright dot caused by abnormal liquid crystal alignment on TFT-LCD[J]. Chinese journal of liquid crystals and displays, 2020, 35(2): 115-121. DOI: 10.3788/YJYXS20203502.0115.
在采用摩擦配向工艺实现液晶取向的TFT-LCD显示屏中,外形不规则亮点不良主要有两种:一种是由可见异物造成的亮点,可以通过加强摩擦后清洗等改善;另一种亮点不良并没有伴随可见异物发生。为提升TFT-LCD良率,亟需明确后者的形成机理并制定改善对策。经分析发现,此种不可见异物亮点位置处液晶取向异常,通过进一步对不良区域微观结构和成分的分析,确认该区域表面有厚约7.5~10 nm的杂质区,造成液晶取向异常;然后通过液晶和配向膜取向异常的再现性测试,锁定摩擦布中背胶和柔顺剂残留是造成液晶取向异常的主要因素,明确了此不良的发生机理;最后,在生产线实际测试了减少背胶和柔顺剂的摩擦布,非异物亮点不良由0.6%降至0%,验证了我们的机理推测和实验室测试结果的有效性。
There are two main types of bright dot defects in TFT LCD where liquid crystal is aligned by rubbing process
one is with particles and the other is without particles. The former can be reduced by enhancing cleaning
but the way to reduce the bright dots without particles is barely studied
so research and experiments are performed. According to macro and micro result
the alignment of liquid crystal is abnormal because of impurities as tall as 7.5~10 nm in the defect area. It can be deduced that the abnormally alignment is caused by the remaining of the back coating and the softener agent on the PI surface. Lastly
the rubbing cloth
in which the back coating and the softener agent are reduced
is tested in our factory. The results show that the bright dots w/o particles decrease from 0.6% to 0% when the back coating and the softener agent in the rubbing cloth are reduced
which proves the effectiveness of the laboratory results and the correction of the mechanism.
马宝平. TFT-LCD点缺陷的分析与研究[D].苏州: 苏州大学, 2009.
MA B P. Study and analysis of point defect in TFT-LCD process[D]. Suzhou: Soochow University, 2009. (in Chinese)
黄 雅纹 , 陈 再良 . TFT LCD常见点缺陷的检测与修复 . 现代电子技术 , 2012 . 35 ( 23 ): 189 - 191 . DOI: 10.3969/j.issn.1004-373X.2012.23.057 http://doi.org/10.3969/j.issn.1004-373X.2012.23.057 .
Y W HUANG , Z L CHEN . Detection and repair of point defects in TFT LCD . Modern Electronics Technique , 2012 . 35 ( 23 ): 189 - 191 . DOI: 10.3969/j.issn.1004-373X.2012.23.057 http://doi.org/10.3969/j.issn.1004-373X.2012.23.057 .
黎 关超 , 王 超 , 何 伟 , 等 . TFT-LCD行业异物不良改善研究 . 液晶与显示 , 2017 . 32 ( 10 ): 787 - 793 . http://yjyxs.com/CN/abstract/abstract10230.shtml http://yjyxs.com/CN/abstract/abstract10230.shtml .
G C LI , C WANG , W HE , 等 . Research and improvement of particle defect in TFT-LCD industry . Chinese Journal of Liquid Crystals and Displays , 2017 . 32 ( 10 ): 787 - 793 . http://yjyxs.com/CN/abstract/abstract10230.shtml http://yjyxs.com/CN/abstract/abstract10230.shtml .
王 海成 , 董 天松 , 郑 英花 , 等 . TFT-LCD制程中Zara点状不良的产生与改善研究 . 液晶与显示 , 2013 . 28 ( 5 ): 707 - 710 . http://yjyxs.com/CN/abstract/abstract9550.shtml http://yjyxs.com/CN/abstract/abstract9550.shtml .
H C WANG , T S DONG , Y H ZHENG , 等 . Occurrence and improvement of Zara particle in TFT-LCD cell process . Chinese Journal of Liquid Crystals and Displays , 2013 . 28 ( 5 ): 707 - 710 . http://yjyxs.com/CN/abstract/abstract9550.shtml http://yjyxs.com/CN/abstract/abstract9550.shtml .
王 银春 , 李 卓 , 李 荣玉 . TFT-LCD成盒工程中配向不良的改善 . 现代显示 , 2009 . 20 ( 6 ): 25 - 28 . DOI: 10.3969/j.issn.1006-6268.2009.06.005 http://doi.org/10.3969/j.issn.1006-6268.2009.06.005 .
Y C WANG , Z LI , R Y LI . The improvement of disclination defect in TFT-LCD cell process . Advanced Display , 2009 . 20 ( 6 ): 25 - 28 . DOI: 10.3969/j.issn.1006-6268.2009.06.005 http://doi.org/10.3969/j.issn.1006-6268.2009.06.005 .
李 晓吉 , 赵 彦礼 , 栗 鹏 , 等 . TFT-LCD改善"斑点不良"的研究 . 液晶与显示 , 2017 . 32 ( 7 ): 507 - 511 . http://yjyxs.com/CN/abstract/abstract10190.shtml http://yjyxs.com/CN/abstract/abstract10190.shtml .
X J LI , Y L ZHAO , P LI , 等 . Prevention of TFT-LCD's "spot issue" . Chinese Journal of Liquid Crystals and Displays , 2017 . 32 ( 7 ): 507 - 511 . http://yjyxs.com/CN/abstract/abstract10190.shtml http://yjyxs.com/CN/abstract/abstract10190.shtml .
潘 丹梅 , 王 力新 , 蔡 东东 , 等 . 原子力显微镜几种成像模式在聚合物太阳能电池材料表征中的应用 . 高分子通报 , 2014 . ( 10 ): 92 - 97 . http://d.old.wanfangdata.com.cn/Periodical/gfztb201410012 http://d.old.wanfangdata.com.cn/Periodical/gfztb201410012 .
D M PAN , L X WANG , D D CAI , 等 . Application of some atomic force microscopic imaging mode in observation of polymer solar cells . Polymer Bulletin , 2014 . ( 10 ): 92 - 97 . http://d.old.wanfangdata.com.cn/Periodical/gfztb201410012 http://d.old.wanfangdata.com.cn/Periodical/gfztb201410012 .
孙 立民 . 飞行时间二次离子质谱在生物材料和生命科学中的应用(下) . 质谱学报 , 2014 . 35 ( 5 ): 385 - 396 . http://d.old.wanfangdata.com.cn/Periodical/zpxb201201010 http://d.old.wanfangdata.com.cn/Periodical/zpxb201201010 .
L M SUN . Applications of time-of-flight secondary ion mass spectrometry in biomaterials and life science (Part Ⅱ) . Journal of Chinese Mass Spectrometry Society , 2014 . 35 ( 5 ): 385 - 396 . http://d.old.wanfangdata.com.cn/Periodical/zpxb201201010 http://d.old.wanfangdata.com.cn/Periodical/zpxb201201010 .
马 群刚 . TFT-LCD原理与设计 , : 北京 电子工业出版社 , 2011 .
Q G MA . Principle and Design in TFT-LCD , : Beijing Publishing House of Electronics Industry , 2011 .
王 丹 , 马 国靖 , 宋 勇志 , 等 . 印刷型设备产生配向膜Mura研究 . 液晶与显示 , 2014 . 29 ( 6 ): 881 - 885 . http://yjyxs.com/CN/abstract/abstract9768.shtml http://yjyxs.com/CN/abstract/abstract9768.shtml .
D WANG , G J MA , Y Z SONG , 等 . PI alignment inkjet printing Mura . Chinese Journal of Liquid Crystals and Displays , 2014 . 29 ( 6 ): 881 - 885 . http://yjyxs.com/CN/abstract/abstract9768.shtml http://yjyxs.com/CN/abstract/abstract9768.shtml .
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