低压驱动高阻值层液晶透镜

林坚普; 林朝福; 翁徐阳; 张永爱; 周雄图; 郭太良; 严群

doi:doi:10.3788/gzxb20194805.0523001

光子学报, 2019, 48 (5): 0523001, 网络出版: 2019-06-12

低压驱动高阻值层液晶透镜

High-resistance Liquid Crystal Lens with Low Driving Voltage

论文大纲

林坚普 ^*林朝福翁徐阳张永爱周雄图郭太良严群

作者单位

福州大学物理与信息工程学院平板显示技术国家地方联合工程实验室, 福州 350108

液晶低压驱动高阻值层驱动电极可控焦距 Liquid crystal Low-voltage driving High resistance layer Driven-electrodes Controllable focal length

摘要

针对传统电极驱动液晶透镜的电场分布在驱动电极边缘的问题, 设计了一种高阻值层驱动电极来控制液晶分子偏转的低压驱动和焦距可调的液晶透镜.利用磁控溅射工艺在含镂空孔阵列的面状铝电极基板表面沉积一层掺铝氧化锌透明薄膜, 形成高阻值层驱动电极; 利用液晶盒成盒工艺将制备好的驱动电极基板和公共电极基板(氧化铟锡玻璃基板)组装成液晶透镜, 研究掺铝氧化锌高阻值层、驱动电压、工作频率对液晶透镜光学性能的影响.实验结果表明, 对比传统电极驱动液晶透镜, 高阻值层电极驱动液晶透镜在驱动电压2.2 Vrms和工作频率130 kHz下获得的干涉圆环均匀, 聚焦光斑小.同时, 在驱动电压1.8~2.8 Vrms和工作频率130 kHz下所制备的液晶透镜焦距可调范围为4.27～2.88 mm.

Abstract

A liquid crystal lens with low driving and controllabe focal length were presented, which was driven by hollow-out driven-electrodes with high-resistance (H-r) layer to control the deflection of liquid crystal molecules according to the electric-filed distribution on the edge of driven-electrode of convention liquid crystal lens. Al-doped ZnO (AZO) transparent film, as the H-r layer of liquid crystal lens, was deposited on the surface of the layered aluminum (Al) electrode with hollow-hole arrays by magnetron sputtering and formed the top substrate with H-r layer driven-electrodes. The H-r liquid crystal lens was fabricated after the liquid crystal was sandwitched between the substrate with H-r driven-electrodes and a substrate with indium-tin-oxide common electrode. The effect of AZO H-r layer, driving voltage and working frequency on the optical properties of liquid crystal lens was studied. The experimental results show that the intereference patterns are uniformer and the focal radius are smaller when the driving voltage of 2.2 Vrms and working frequency of 130 kHz are applied to the fabricated H-r layer liquid crystal lens. In addition, the focal length of H-r liquid crystal lens can be adjusted from 4.27 mm to 2.88 mm with the driving voltages range from1.8 to 2.8 Vrms and working frequencies of 130 kHz.

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林坚普, 林朝福, 翁徐阳, 张永爱, 周雄图, 郭太良, 严群. 低压驱动高阻值层液晶透镜[J]. 光子学报, 2019, 48(5): 0523001. LIN Jian-pu, LIN Chao-fu, WENG Xu-yang, ZHANG Yong-ai, ZHOU Xiong-tu, GUO Tai-liang, YAN Qun. High-resistance Liquid Crystal Lens with Low Driving Voltage[J]. ACTA PHOTONICA SINICA, 2019, 48(5): 0523001.

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