P-149: Maximization of Transmittance and Minimization of Image-Flickering due to Flexoelectric Effect in Low-Frequency Driving Fringe-Field Switching (FFS) Mode Using LCs with Negative Dielectric Anisotropy

2017 ◽  
Vol 48 (1) ◽  
pp. 1841-1844 ◽  
Author(s):  
Chang Suk Lee ◽  
Han Sol Choi ◽  
Hyeong Gyun Ham ◽  
Hye Sun Yoo ◽  
MinSu Kim ◽  
...  
Keyword(s):  
Low Frequency ◽  
Fringe Field ◽  
Dielectric Anisotropy ◽  
Flexoelectric Effect

scholarly journals Photocontrollable Resistivity Change in Nanoparticle-Doped Liquid Crystal Alignment Layer: Voltage Holding and Discharging Properties of Fringe-Field Switching Liquid Crystal Modes

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 268
Author(s):  
Jeong-Hoon Ko ◽  
Jun-Chan Choi ◽  
Dong-Jin Lee ◽  
Jae-Won Lee ◽  
Hak-Rin Kim
Keyword(s):  
Liquid Crystal ◽  
Power Saving ◽  
Low Frequency ◽  
Fringe Field ◽  
Resistance Level ◽  
Alignment Layer ◽  
Experimental Scheme ◽  
Tunable Range ◽  
Crystal Alignment ◽  
Operation Frequency

In liquid crystal (LC) displays, deriving an optimum resistance level of an LC alignment polyimide (PI) layer is important because of the trade-off between the voltage holding and surface-discharging properties. In particular, to apply a power-saving low-frequency operation scheme to fringe-field switching (FFS) LC modes with negative dielectric LC (n-LC), delicate material engineering is required to avoid surface-charge-dependent image flickering and sticking problems, which severely degrade with lowering operation frequency. Therefore, this paper proposes a photocontrolled variable-resistivity PI layer in order to systematically investigate the voltage holding and discharging properties of the FFS n-LC modes, according to the PI resistivity (ρ) levels. By doping fullerene into the high-ρ PI as the photoexcited charge-generating nanoparticles, the ρ levels of the PI were continuously controllable with a wide tunable range (0.95 × 1015 Ω∙cm to 5.36 × 1013 Ω∙cm) through Ar laser irradiation under the same LC and LC alignment conditions. The frequency-dependent voltage holding and discharge behaviors were analyzed with photocontrolled ρ variation. Thus, the proposed experimental scheme is a feasible approach in PI engineering for a power-saving low-frequency FFS n-LC mode without the image flickering and image sticking issues.

23-1:Distinguished Student Paper: Flexoelectric Effect on Image Flickering of Fringe Field Switching LCDs

2016 ◽  
Vol 47 (1) ◽  
pp. 274-277 ◽  
Author(s):  
Haiwei Chen ◽  
Fenglin Peng ◽  
Minggang Hu ◽  
Shin-Tson Wu
Keyword(s):  
Fringe Field ◽  
Flexoelectric Effect ◽  
Student Paper

24.1: A Method for Analyzing the Eye Strain in Fringe-Field-Switching LCD under Low-Frequency Driving

2014 ◽  
Vol 45 (1) ◽  
pp. 308-311 ◽  
Author(s):  
Kung-Ching Chu ◽  
Ching-Wen Huang ◽  
Rong-Fu Lin ◽  
Cheng-Hsun Tsai ◽  
Jin-Nan Yeh ◽  
...  
Keyword(s):  
Low Frequency ◽  
Fringe Field

P-131: Studies on Flickering in Low Frequency Driven Fringe-Field Switching (FFS) Liquid Crystal Display

2016 ◽  
Vol 47 (1) ◽  
pp. 1610-1613 ◽  
Author(s):  
Han Sol Choi ◽  
Jin Hyun Kim ◽  
Hyeong Gyun Ham ◽  
Young Jin Lim ◽  
Jae Myeong Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Low Frequency ◽  
Fringe Field

Fringe-Field Switching with a Negative Dielectric Anisotropy Liquid Crystal

2013 ◽  
Vol 9 (2) ◽  
pp. 74-77 ◽  
Author(s):  
Yuan Chen ◽  
Zhenyue Luo ◽  
Fenglin Peng ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Fringe Field ◽  
Dielectric Anisotropy

scholarly journals Elimination of image flicker in fringe-field switching liquid crystal display driven with low frequency electric field

2014 ◽  
Vol 22 (25) ◽  
pp. 30586 ◽  
Author(s):  
Jung-Wook Kim ◽  
Tae-Hoon Choi ◽  
Tae-Hoon Yoon ◽  
E-Joon Choi ◽  
Ji-Hoon Lee
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Liquid Crystal Display ◽  
Low Frequency ◽  
Fringe Field ◽  
Frequency Electric Field
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