Open AccessTransient flickering behavior in fringe-field switching liquid crystal mode analyzed by positional asymmetric flexoelectric dynamics
Author(s) -
Dong Hoon Lee,
Gyu-Yeop Shim,
JunChan Choi,
JiSub Park,
Joun-Ho Lee,
JiHo Baek,
Hyun Chul Choi,
Yong Min Ha,
Amid Ranjkesh,
HakRin Kim
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.034055
Subject(s) - optics , liquid crystal , brightness , flicker , materials science , offset (computer science) , flexoelectricity , transient (computer programming) , drop (telecommunication) , physics , telecommunications , electrical engineering , computer science , programming language , engineering , operating system
We analyzed a transient blinking phenomenon in a fringe-field switching liquid crystal (LC) mode that occurred at the moment of frame change even in the optimized DC offset condition for minimum image flicker. Based on the positional dynamic behaviors of LCs by using a high-speed camera, we found that the transient blink is highly related to the asymmetric responses of the splay-bend transitions caused by the flexoelectric (FE) effect. To remove the transient blink, the elastic property adjustment of LCs was an effective solution because the FE switching dynamics between the splay-enhanced and bend-enhanced deformations are highly dependent on the elastic constants of LCs, which is the cause of momentary brightness drop.