Influence ofγ-Fe2O3 nanoparticles doping on the image sticking in VAN-LCD  

作　　者：Ningning Liu Mohan Wang Zongyuan Tang Lin Gao Shuai Jing Na Gao Hongyu Xing Xiangshen Meng Zhenghong He Jian Li Minglei Cai Xiaoyan Wang Wenjiang Ye 刘宁宁;王墨涵;唐宗元;高林;景帅;高娜;邢红玉;孟祥申;何正红;李建;蔡明雷;王晓燕;叶文江(School of Sciences,Hebei University of Technology,Tianjin 300401,China;School of Physical Science and Technology,Southwest University,Chongqing 400715,China;Hebei Jiya Electronics Co.,Ltd.,Shijiazhuang 050071,China;Hebei Provincial Research Center of LCD Engineering Technology,Shijiazhuang 050071,China)

机构地区：[1]School of Sciences,Hebei University of Technology,Tianjin 300401,China [2]School of Physical Science and Technology,Southwest University,Chongqing 400715,China [3]Hebei Jiya Electronics Co.,Ltd.,Shijiazhuang 050071,China [4]Hebei Provincial Research Center of LCD Engineering Technology,Shijiazhuang 050071,China

出　　处：《Chinese Optics Letters》2020年第3期68-74,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Nos.11374087 and11504080);the Natural Science Foundation of Hebei Province of China(Nos.A2019202235 and A2017202004);the Key Subject Construction Project of Hebei Province University。

摘　　要：Image sticking in liquid crystal display(LCD)is related to the residual direct current(DC)voltage(RDCV)on the cell and the dynamic response of the liquid crystal materials.According to the capacitance change of the liquid crystal cell under the DC bias,the saturated RDCV(SRDCV)can be obtained.The response time can be obtained by testing the optical dynamic response of the liquid crystal cell,thereby evaluating the image sticking problem.Based on this,the image sticking of vertical aligned nematic(VAN)LCD(VAN-LCD)with different cell thicknesses(3.8μm and 11.5μm)and different concentrations ofγ-Fe2O3 nanoparticles(0.017 wt.%,0.034 wt.%,0.051 wt.%,0.068 wt.%,0.136 wt.%,0.204 wt.%,and 0.272 wt.%)was evaluated,and the effect of nano-doping was analyzed.It is found that the SRDCV and response time decrease firstly and then increase with the increase of the doping concentration ofγ-Fe2O3 nanoparticles in the VAN cell.When the doping concentration is 0.034 wt.%,theγ-Fe2O3 nanoparticles can adsorb most of the free impurity ions in liquid crystal materials,resulting in 70%reduction in the SRDCV,8.11%decrease in the decay time,and 15.49%reduction in the rise time.The results show that the doping ofγ-Fe2O3 nanoparticles can effectively improve the image sticking of VAN-LCD and provide useful guidance for improving the display quality.

关 键 词：NANOPARTICLES DOPING image STICKING SRDCV response time VAN-LCD 

分 类 号：TN873.93[电子电信—信息与通信工程]