Choi Jun-Chan, Lee Dong-Jin, Park Min-Kyu, Park Ji-Sub, Lee Joun-Ho, Baek Ji-Ho, Choi Hyun Chul, Kim Hak-Rin
Opt Express. 2019 Sep 30;27(20):29178-29195. doi: 10.1364/OE.27.029178.
We herein propose a multiwalled carbon nanotube (MWCNT) doping method into liquid crystal (LC) alignment polyimides (PIs) with low resistivity for resolving both issues of voltage holding and image sticking in low-frequency-driven fringe-field switching (FFS) LC modes using negative dielectric LCs (n-LCs). By utilizing strong ion trapping ability of MWCNTs, the FFS n-LC cell aligned by low resistivity PIs with 0.05 wt% MWCNT doping exhibited an excellent voltage holding ratio of 99% under an extremely low operation frequency of 0.5 Hz and approximately 23.6 times better surface discharging property than that aligned by high resistivity PIs.
我们在此提出一种将多壁碳纳米管（MWCNT）掺杂到液晶（LC）取向聚酰亚胺（PI）中的方法，该聚酰亚胺具有低电阻率，以解决使用负介电常数液晶（n-LC）的低频驱动边缘场切换（FFS）LC模式中的电压保持和图像残留这两个问题。通过利用MWCNT强大的离子捕获能力，在掺杂0.05 wt% MWCNT的低电阻率PI排列的FFS n-LC盒在0.5 Hz的极低工作频率下表现出99%的优异电压保持率，并且表面放电性能比高电阻率PI排列的FFS n-LC盒好约23.6倍。
