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1.汕头大学 理学院, 广东 汕头 515063
2.汕头大学 工学院, 广东 汕头 515063
3.广东省车载显示触控技术重点实验室, 广东 汕头515047
Received:06 June 2026,
Revised:2026-06-19,
Published:06 July 2026
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SUN Haifeng, CHEN Yali, LIU Jiale, et al. Cell-Gap-Constrained asymmetric relaxation characteristics of optical bounce in overdriven liquid crystal devices[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(7): 942-951.
SUN Haifeng, CHEN Yali, LIU Jiale, et al. Cell-Gap-Constrained asymmetric relaxation characteristics of optical bounce in overdriven liquid crystal devices[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(7): 942-951. DOI: 10.37188/CJLCD.2026-0130. CSTR: 32172.14.CJLCD.2026-0130.
过压驱动技术在加速液晶器件响应的同时常引发显著的光学反弹现象,本文基于Ericksen-Leslie理论建立有限差分模型,揭示其物理根源在于指向矢在受限空间内的异步弛豫。通过模拟器件的指向矢转角及角速度空间分布,发现过压激发的层间转速差是引发光学反弹的微观源头。本文聚焦盒厚(5~15 µm)这一几何参量,揭示了异步弛豫受盒厚约束的演化规律及其对过压驱动模式下光学反弹非对称特性的调控机制。模拟与实验结果变化一致,结果表明,恒定电压差值驱动下,超压与欠压呈现相反的弛豫趋势:欠压驱动时,因弹性恢复力随盒厚平方级衰减,厚盒难以抑制层间异步弛豫,反弹凹陷率(BDR)由5 µm时的约2%增至15 µm时的20%以上;超压驱动时,因内部电场随厚度线性衰减,层间转速差被源头削弱,BDR由15.7%降至不足4%。通过恒定电场对照实验及等倾角模拟排除驱动场衰减干扰后,各模式的BDR均随盒厚单调上升。本研究从异步弛豫视角明晰了盒厚对光学反弹非对称特性的主导作用,为高速液晶器件的尺度优化提供了理论依据。
Overdriving technology(OD) accelerates the response of liquid crystal(LC) devices but frequently induces significant optical bounce(OB). Based on the Ericksen-Leslie continuum theory, this paper establishes a finite-difference model and reveals that the physical origin of OB lies in the asynchronous relaxation of LC directors within the confined space. By simulating the spatial distributions of director tilt angle and angular velocity, it is found that the interlayer angular velocity difference induced by overdrive is the microscopic source triggering OB. Focusing on the cell gap (5~15 µm) as a key geometric parameter, this paper reveals the evolutionary laws of asynchronous relaxation constrained by cell gap and its regulatory mechanism on the asymmetric OB characteristics under overdrive modes. The simulated and experimental results exhibit consistent trends. The results demonstrate that, under a constant overdrive voltage difference, overshoot and undershoot driving exhibit opposite relaxation trends: during undershoot driving, the elastic restoring force decays quadratically with cell gap, making it difficult for thicker cells to suppress interlayer asynchronous relaxation; the bounce depth ratio(BDR) increases from approximately 2% at 5 µm to over 20% at 15 µm. During overshoot driving, the internal electric field attenuates linearly with cell gap, weakening the interlayer angular velocity difference at its source; the BDR decreases from 15.7% to below 4%. After eliminating the interference of driving field attenuation through constant electric field control experiments and constant average tilt-angle simulations, the BDR for both modes increases monotonically with cell gap. From the perspective of asynchronous relaxation, this study clarifies the dominant role of cell gap in governing asymmetric OB, providing a theoretical basis for the dimensional optimization of high-speed LC devices.
李继军 , 聂晓梦 , 甄威 , 等 . 显示技术比较及新进展 [J]. 液晶与显示 , 2018 , 33 ( 1 ): 74 - 84 . doi: 10.3788/YJYXS20183301.0074 http://dx.doi.org/10.3788/YJYXS20183301.0074
LI J J , NIE X M , ZHEN W , et al . New developments and comparisons in display technology [J]. Chinese Journal of Liquid Crystals and Displays , 2018 , 33 ( 1 ): 74 - 84 . (in Chinese) . doi: 10.3788/YJYXS20183301.0074 http://dx.doi.org/10.3788/YJYXS20183301.0074
黄晓丽 , 孙玉宝 , 马红梅 . 液晶显示器多种显示模式色彩表现的研究进展 [J]. 液晶与显示 , 2021 , 36 ( 3 ): 355 - 370 . doi: 10.37188/CJLCD.2020-0231 http://dx.doi.org/10.37188/CJLCD.2020-0231
HUANG X L , SUN Y B , MA H M . Research progress in color performance of LCD with various display modes [J]. Chinese Journal of Liquid Crystals and Displays , 2021 , 36 ( 3 ): 355 - 370 . (in Chinese) . doi: 10.37188/CJLCD.2020-0231 http://dx.doi.org/10.37188/CJLCD.2020-0231
胡霄骁 , 孙玉宝 . 新型多畴扭曲向列相液晶显示器 [J]. 液晶与显示 , 2012 , 27 ( 4 ): 481 - 485 . doi: 10.3788/yjyxs20122704.0481 http://dx.doi.org/10.3788/yjyxs20122704.0481
HU X X , SUN Y B . Novel multi-domain twisted nematic mode liquid crystal display [J]. Chinese Journal of Liquid Crystals and Displays , 2012 , 27 ( 4 ): 481 - 485 . (in Chinese) . doi: 10.3788/yjyxs20122704.0481 http://dx.doi.org/10.3788/yjyxs20122704.0481
MAK H Y , CHIGRINOV V G , KWOK H S . Transflective twisted-nematic liquid-crystal display with double twisted-nematic cell and twisted liquid-crystal retarder [J]. Journal of the Society for Information Display , 2007 , 15 ( 7 ): 527 - 531 . doi: 10.1889/1.2759559 http://dx.doi.org/10.1889/1.2759559
CHEN S H , YANG C L . Dynamics of twisted nematic liquid crystal pi-cells [J]. Applied Physics Letters , 2002 , 80 ( 20 ): 3721 - 3723 . doi: 10.1063/1.1480880 http://dx.doi.org/10.1063/1.1480880
CHEN H W , PENG F L , LUO Z Y , et al . High performance liquid crystal displays with a low dielectric constant material [J]. Optical Materials Express , 2014 , 4 ( 11 ): 2262 - 2273 . doi: 10.1364/ome.4.002262 http://dx.doi.org/10.1364/ome.4.002262
CHOI T H , CHOI Y , WOO J H , et al . Electro-optical characteristics of an in-plane-switching liquid crystal cell with zero rubbing angle: dependence on the electrode structure [J]. Optics Express , 2016 , 24 ( 14 ): 15987 - 15996 . doi: 10.1364/OE.24.015987 http://dx.doi.org/10.1364/OE.24.015987
HER J H , SHIN S J , LIM Y J , et al . Viewing angle switching in in-plane switching liquid crystal display [J]. Molecular Crystals and Liquid Crystals , 2011 , 544 ( 1 ): 220 - 226 . doi: 10.1080/15421406.2011.569657 http://dx.doi.org/10.1080/15421406.2011.569657
王建国 . VA型液晶屏周边Mura的分析与改善 [J]. 液晶与显示 , 2013 , 28 ( 5 ): 716 - 719 . doi: 10.3788/yjyxs20132805.0716 http://dx.doi.org/10.3788/yjyxs20132805.0716
WANG J G . Analysis and improvement of edge Mura in VA liquid crystal panel [J]. Chinese Journal of Liquid Crystals and Displays , 2013 , 28 ( 5 ): 716 - 719 . (in Chinese) . doi: 10.3788/yjyxs20132805.0716 http://dx.doi.org/10.3788/yjyxs20132805.0716
KIM S G , KIM S M , KIM Y S , et al . Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen [J]. Applied Physics Letters , 2007 , 90 ( 26 ): 261910 . doi: 10.1063/1.2752105 http://dx.doi.org/10.1063/1.2752105
KUMAR P , JAGGI C , SHARMA V , et al . Advancements of vertically aligned liquid crystal displays [J]. Micron , 2016 , 81 : 34 - 47 . doi: 10.1016/j.micron.2015.11.001 http://dx.doi.org/10.1016/j.micron.2015.11.001
陈云昌 , 宣丽 , 姚丽双 , 等 . 取向层参数对响应时间的影响 [J]. 液晶与显示 , 2016 , 31 ( 1 ): 62 - 66 . doi: 10.3788/yjyxs20163101.0062 http://dx.doi.org/10.3788/yjyxs20163101.0062
CHEN Y C , XUAN L , YAO L S , et al . Effect of aligning layer parameters on response time [J]. Chinese Journal of Liquid Crystals and Displays , 2016 , 31 ( 1 ): 62 - 66 . (in Chinese) . doi: 10.3788/yjyxs20163101.0062 http://dx.doi.org/10.3788/yjyxs20163101.0062
DADIVANYAN A K , NOAH O V , PASHININA Y M , et al . Anchoring energy of liquid crystals [J]. Molecular Crystals and Liquid Crystals , 2012 , 560 ( 1 ): 108 - 114 . doi: 10.1080/15421406.2012.663185 http://dx.doi.org/10.1080/15421406.2012.663185
LIN G J , CHEN T J , TSAI Y W , et al . Effects of U-shaped alignment and surface-anchored polymer morphology on the electro-optical properties of in-plane-switching vertically aligned liquid crystal devices [J]. Optical Materials Express , 2016 , 6 ( 9 ): 3008 - 3019 . doi: 10.1364/ome.6.003008 http://dx.doi.org/10.1364/ome.6.003008
DERFEL G , BUCZKOWSKA M . Electric field induced deformations of twisted flexoelectric nematic layers [J]. Liquid Crystals , 2015 , 42 ( 9 ): 1213 - 1220 . doi: 10.1080/02678292.2015.1033770 http://dx.doi.org/10.1080/02678292.2015.1033770
苑梦尧 , 邓罗根 . 液晶盒边界效应对胆甾相液晶电控螺距的影响 [J]. 液晶与显示 , 2010 , 25 ( 1 ): 21 - 28 .
YUAN M Y , DENG L G . Effects of liquid crystal cell's boundary conditions on electric tuning of cholesteric liquid crystal spiral pitch [J]. Chinese Journal of Liquid Crystals and Displays , 2010 , 25 ( 1 ): 21 - 28 . (in Chinese)
VAN DOORN C Z . Dynamic behavior of twisted nematic liquid-crystal layers in switched fields [J]. Journal of Applied Physics , 1975 , 46 ( 9 ): 3738 - 3745 . doi: 10.1063/1.322177 http://dx.doi.org/10.1063/1.322177
SINGH R , UNNI K N N , SOLANKI A , et al . Improving the contrast ratio of OLED displays: an analysis of various techniques [J]. Optical Materials , 2012 , 34 ( 4 ): 716 - 723 . doi: 10.1016/j.optmat.2011.10.005 http://dx.doi.org/10.1016/j.optmat.2011.10.005
SHINAR J . Organic Light - Emitting Devices: a Survey [M]. New York : Springer , 2004 . doi: 10.1007/978-0-387-21720-8 http://dx.doi.org/10.1007/978-0-387-21720-8
BARDSLEY J N . International OLED technology roadmap [J]. IEEE Journal of Selected Topics in Quantum Electronics , 2004 , 10 ( 1 ): 3 - 9 . doi: 10.1109/jstqe.2004.824077 http://dx.doi.org/10.1109/jstqe.2004.824077
韩洪松 , 齐爱想 , 刘俊国 , 等 . Micro-LED在机载上的应用 [J]. 液晶与显示 , 2021 , 36 ( 3 ): 439 - 447 . doi: 10.37188/CJLCD.2020-0096 http://dx.doi.org/10.37188/CJLCD.2020-0096
HAN H S , QI A X , LIU J G , et al . Application of Micro-LED technology in airborne display [J]. Chinese Journal of Liquid Crystals and Displays , 2021 , 36 ( 3 ): 439 - 447 . (in Chinese) . doi: 10.37188/CJLCD.2020-0096 http://dx.doi.org/10.37188/CJLCD.2020-0096
季洪雷 , 张萍萍 , 陈乃军 , 等 . Micro-LED显示的发展现状与技术挑战 [J]. 液晶与显示 , 2021 , 36 ( 8 ): 1101 - 1112 . doi: 10.37188/CJLCD.2021-0063 http://dx.doi.org/10.37188/CJLCD.2021-0063
JI H L , ZHANG P P , CHEN N J , et al . Micro-LED display: recent progress and future challenges [J]. Chinese Journal of Liquid Crystals and Displays , 2021 , 36 ( 8 ): 1101 - 1112 . (in Chinese) . doi: 10.37188/CJLCD.2021-0063 http://dx.doi.org/10.37188/CJLCD.2021-0063
KIM T S , RYU J E , PARK J , et al . Future trends of display technology: micro-LEDs toward transparent, free-form, and near-eye displays [J]. Light: Science & Applications , 2025 , 14 ( 1 ): 335 . doi: 10.1038/s41377-025-02027-1 http://dx.doi.org/10.1038/s41377-025-02027-1
DE SOUZA R F , YANG D K , LENZI E K , et al . Effect of surface viscosity, anchoring energy, and cell gap on the response time of nematic liquid crystals [J]. Annals of Physics , 2014 , 346 : 14 - 21 . doi: 10.1016/j.aop.2014.04.001 http://dx.doi.org/10.1016/j.aop.2014.04.001
RAO L H , GAUZA S , WU S T . Low temperature effects on the response time of liquid crystal displays [J]. Applied Physics Letters , 2009 , 94 ( 7 ): 071112 . doi: 10.1063/1.3086883 http://dx.doi.org/10.1063/1.3086883
HUANG Y G , HE Z Q , WU S T . Fast-response liquid crystal phase modulators for augmented reality displays [J]. Optics Express , 2017 , 25 ( 26 ): 32757 - 32766 . doi: 10.1364/oe.25.032757 http://dx.doi.org/10.1364/oe.25.032757
LI B X , BABAKHANOVA G , XIAO R L , et al . Microsecond electro-optic switching of nematic liquid crystals with giant dielectric anisotropy [J]. Physical Review Applied , 2019 , 12 ( 2 ): 024005 . doi: 10.1103/physrevapplied.12.024005 http://dx.doi.org/10.1103/physrevapplied.12.024005
胡红斌 . 液晶波前校正器的过驱动研究 [D]. 长春 : 中国科学院大学(中国科学院长春光学精密机械与物理研究所) , 2013 .
HU H B . Research of overdriving of the liquid crystal wavefront corrector [D]. Changchun : University of Chinese Academy of Sciences (Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences) , 2013 . (in Chinese)
CHEN H W , LEE J H , LIN B Y , et al . Liquid crystal display and organic light-emitting diode display: present status and future perspectives [J]. Light: Science & Applications , 2018 , 7 ( 3 ): 17168 . doi: 10.1038/lsa.2017.168 http://dx.doi.org/10.1038/lsa.2017.168
QIN Q Q , TANG G Y , LIN Y C , et al . P-175: quantitative analysis of LCD motion ghosting based on visual perception model [J]. SID Symposium Digest of Technical Papers , 2024 , 55 ( 1 ): 2053 - 2055 . doi: 10.1002/sdtp.18004 http://dx.doi.org/10.1002/sdtp.18004
史文雄 , 卢绮涵 , 梁如标 , 等 . 用于液晶调控器件的过压驱动技术进展 [J]. 液晶与显示 , 2024 , 39 ( 3 ): 384 - 392 . doi: 10.37188/cjlcd.2024-0049 http://dx.doi.org/10.37188/cjlcd.2024-0049
SHI W X , LU Q H , LIANG R B , et al . Development of overdriving technology for liquid crystal modulatory devices [J]. Chinese Journal of Liquid Crystals and Displays , 2024 , 39 ( 3 ): 384 - 392 . (in Chinese) . doi: 10.37188/cjlcd.2024-0049 http://dx.doi.org/10.37188/cjlcd.2024-0049
DI PIETRO V M , JULLIEN A , BORTOLOZZO U , et al . Dynamical optical response of nematic liquid crystal cells through electrically driven Fréedericksz transition: influence of the nematic layer thickness [J]. Optics Express , 2018 , 26 ( 8 ): 10716 - 10728 . doi: 10.1364/oe.26.010716 http://dx.doi.org/10.1364/oe.26.010716
WU J J , KUO L Y , FAN S H , et al . Optical bounce in a multi-domain vertical aligned liquid crystal display [J]. Displays , 2009 , 30 ( 4/5 ): 199 - 201 . doi: 10.1016/j.displa.2009.06.001 http://dx.doi.org/10.1016/j.displa.2009.06.001
JIN Y H , ELSTON S J , FELLS J A J , et al . Backflow-assisted time-resolved phase modulation in nematic liquid crystal Pi-cells [J]. Optics & Laser Technology , 2022 , 156 : 108596 . doi: 10.1016/j.optlastec.2022.108596 http://dx.doi.org/10.1016/j.optlastec.2022.108596
ZHANG H , YI Z C , LIU L M , et al . A fast-response driving waveform design based on high-frequency voltage for three-color electrophoretic displays [J]. Micromachines , 2022 , 13 ( 1 ): 59 . doi: 10.3390/mi13010059 http://dx.doi.org/10.3390/mi13010059
YOKOTA J , MATSUMOTO K , USUI K , et al . Effect of host structure on optical freedericksz transition in dye-doped liquid crystals [J]. Materials , 2022 , 15 ( 12 ): 4125 . doi: 10.3390/ma15124125 http://dx.doi.org/10.3390/ma15124125
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