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京东方显示技术有限公司 北京,100176
收稿日期:2012-10-24,
修回日期:2012-12-26,
纸质出版日期:2013-08-15
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林鸿涛, 王明超, 姚之晓, 刘家荣, 王章涛, 邵喜斌. TFT-LCD中画面闪烁的机理研究[J]. 液晶与显示, 2013,28(4): 567-571
LIN Hong-tao, WANG Ming-chao, YAO Zhi-xiao, LIU Jia-rong, WANG Zhang-tao, SHAO Xi-bin. Mechanism Research About Flicker in TFT-LCD[J]. , 2013,28(4): 567-571
林鸿涛, 王明超, 姚之晓, 刘家荣, 王章涛, 邵喜斌. TFT-LCD中画面闪烁的机理研究[J]. 液晶与显示, 2013,28(4): 567-571 DOI: 10.3788/YJYXS20132804.0567.
LIN Hong-tao, WANG Ming-chao, YAO Zhi-xiao, LIU Jia-rong, WANG Zhang-tao, SHAO Xi-bin. Mechanism Research About Flicker in TFT-LCD[J]. , 2013,28(4): 567-571 DOI: 10.3788/YJYXS20132804.0567.
画面闪烁是TFT-LCD的重要缺陷。文章通过一系列的实验
观察了Photo-
I
off
、
V
com
、Flicker、V
gs
之间的关系
并给出了机理解释。
V
gs
的变化产生V
p
导致
V
com
的漂移
形成闪烁
但如果
V
com
的均匀性较好
这种闪烁理论上可以通过
V
com
调整消除。Photo-
I
off
造成在正、负极性电压下像素的电压保持特性不同
引起
V
com
进一步的漂移和闪烁。通过降低Photo-
I
off
和提高
V
gl
可以改善闪烁现象。
Flicker is the serious defect of TFT-LCD. In this paper the relations among photo-
I
off
V
com
flicker and V
gs
had been observed through a series of experiments
and the mechanism explanation is demonstrated. The change of
V
gs
brings
V
p
results in the shift of
V
com
and flicker
however
this kind of flicker can be avoided theoretically by the
V
com
adjustment if the uniformity of
V
com
has no problem. The pixel's voltage holding characteristic has difference between the positive and negative frames due to the Photo-
I
off
so the further shift of
V
com
and flicker are happened. The flicker phenomena can be improved by decreasing the value of Photo-
I
off
or increasing the
V
gl
.
徐益勤,张宇宁,李晓华.显示器件大面积闪烁视觉生理基础与改善方法 [J]. 电子器件, 2008,31(5):1417-1420.[2] 林鸿涛,郤玉生,胡海琛. TFT-LCD中驱动信号对线残像的改善研究 [J]. 液晶与显示, 2012,27(3):359-363.[3] 唐进.液晶显示器显示闪烁研究[D].上海:上海交通大学,2008.[4] 潘旭辉. 平板显示器闪烁评价和测量系统的研究.杭州:浙江大学,2006.[5] 李永忠, 纪伟丰, 周炎宏. STN-LCD残影显示的原理分析及实验研究 [J]. 液晶与显示, 2011, 12(6): 733-740.[6] Li C, Yan T, Wang L L. Investigation of flicker visibility in impulse type displays [J].Proceedings of Asia Display, 2007, (1): 264-267.[7] 闫亮. TFT LCD最佳驱动方法及性能改进的研究[D].天津:天津大学,2006.[8] 杨虹,唐志勇,凌志华,等.VGA TFT LCD 的驱动电路设计 [J]. 液晶与显示, 2001,16(1):52-58.[9] Donald L, Mike W, 印宁华. 怎样真正消除液晶显示屏的闪烁 [J]. EDN CHINA电子设计技术, 2005,11:82-83.[10] Tae H K, Soon S J, Jae W P, et al. Simulations of crosstalk and flicker in TFT-LCDs [J].Journal of the Korean Physical Society,2001,39(1):67-71.[11] 廖燕平,王军. 薄膜晶体管(TFT)及其在平板显示中的应用 [M].北京:电子工业出版社, 2008:215-234.[12] Zhao H Y, Jae G Y, Jai-il R, et al. Photo-leakage current impact on image sticking[C]//IDW09 Digest,Miyazaki, Japan:IDW,2009:69-72.[13] Xie C, Shi Y, Zhu J L, et al. The effect of TFT characteristics on panel uniformity and image sticking[C]//IMID,Daegu, Korea:IMID,2012:1-6:493-494.[14] Shi Y, Xie C, Jae G Y. The research of relationship between ADS mode LCD image sticking and TFT photo I-off by simulation method[C]//IMID,Daegu, Korea:IMID,2012:501-502.[15] Myung-S S, Keon-Ho Y, Jin Jang. Electrical stimulation of the flicker in poly-Si TFT-LCD pixels for the large-area and high-quality TFT-LCD development and manufacturing [J]. Solid-State Electronics, 2004,(48):2307-2313.[16] 马占杰. 改善a- Si TFT LCD 像素电极跳变电压方法研究 [J]. 现代显示, 2009,(4):19-27.
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