摘要
传统PSCLC薄膜的图案化制造依赖于预制光掩膜或复杂微纳加工工艺,成本高且灵活性受限,制约了其在个性化光学器件中的应用。本文采用按需喷墨技术,实现快速、高效的图案化制备,使液晶图案具备可编程性和高设计自由度,并引入双折射膜提升光学调制效率,实现颜色梯度变化。红、绿、蓝3种PSCLC材料在实验中的反射中心波长分别为680 nm、550 nm和490 nm,并在直流电压下进入散射态,展现出优异的电光响应特性。通过优化液晶溶液黏度及输入波形,制备出像素尺寸60μm的均匀PSCLC像素阵列,确保喷墨打印工艺的可行性。这种低成本、可扩展的液晶图案制造方法不仅提升了液晶图案化的精度,还拓展了PSCLC在柔性显示、智能光子器件及可调光学元件中的应用潜力。
The conventional patterning of PSCLC films relies on prefabricated photomasks or complex micro/nano fabrication processes,which are costly and limited flexibility,thus restricting their applications in personalized optical devices.In this work,a drop-on-demand inkjet printing technique is employed to achieve rapid and efficient patterning,enabling programmable and highly designable liquid crystal patterns.A birefringent film is introduced to enhance optical modulation efficiency and realize gradient color variations.Experimentally,the reflection peaks of red,green,and blue PSCLC materials are centered at 680 nm,550 nm,and 490 nm,respectively,and all enter a scattering state under applied DC voltages,demonstrating excellent electro-optical responsiveness.By optimizing the viscosity of the liquid crystal solution and the driving waveform,uniform PSCLC pixel arrays with a minimum pixel size of 60μm are successfully fabricated,verifying the feasibility of the inkjet printing process.This low-cost and scalable patterning method significantly improves the precision of PSCLC patterning.It also expands their potential applications in flexible displays,smart photonic devices,and tunable optical elements.
作者
张志立
王翔
黄文彬
周小红
于忠卫
黄艳艳
ZHANG Zhili;SUN Yi;HUANG Wenbin;ZHOU Xiaohong;YU Zhongwei;HUANG Yanyan(School of Physical Science and Technology,Nantong University,Nantong 226001,China;Collaborative Innovation Center of Suzhou Nano Science and Technology,School of Optoelectronic Science and Engineering,Soochow University,Suzhou 215006,China;Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province,Key Lab of Modern Optical Technologies of Education Ministry of China,Soochow University,Suzhou 215006,China;Weiyeda Technology(Jiangsu)Co.Ltd.,Nantong 226001,China)
出处
《液晶与显示》
北大核心
2025年第9期1243-1250,共8页
Chinese Journal of Liquid Crystals and Displays
基金
国家重点研发计划(No.2022YFB3606603)
国家自然科学基金(No.62175170,No.62275180)
江苏省高校重点学科建设。
关键词
胆甾相液晶
喷墨打印
光谱调控
电驱动
cholesteric liquid crystal
inkjet printing
spectrum tuning
electric driving
