Optimized design of comb electrode structure for square aperture liquid crystal lens

WEI Ning; LIU Zhiqiang; YE Mao

doi:10.37188/CJLCD.2026-0016

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Optimized design of comb electrode structure for square aperture liquid crystal lens

Device Physics and Device Preparation | 更新时间：2026-09-12

- Optimized design of comb electrode structure for square aperture liquid crystal lens
- Chinese Journal of Liquid Crystals and Displays Vol. 41, Issue 4, Pages: 482-489(2026)
- 作者机构：
  
  电子科技大学光电科学与工程学院，四川成都 611731
- 作者简介：
- 基金信息：
- DOI：10.37188/CJLCD.2026-0016
  CLC： O435.1;O753⁺.2
- CSTR：32172.14.CJLCD.2026-0016
- Received：01 February 2026，
  
  Revised：2026-02-28，
  
  Published：05 April 2026
- 稿件说明：
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WEI Ning, LIU Zhiqiang, YE Mao. Optimized design of comb electrode structure for square aperture liquid crystal lens[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(4): 482-489.
DOI：

WEI Ning, LIU Zhiqiang, YE Mao. Optimized design of comb electrode structure for square aperture liquid crystal lens[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(4): 482-489. DOI： 10.37188/CJLCD.2026-0016. CSTR： 32172.14.CJLCD.2026-0016.

摘要

针对传统梳状电极液晶透镜存在的电压梯度不均匀问题及相位分布不均匀问题，本研究设计了一种电极结构，旨在优化液晶透镜的光学性能。通过改进电极布局，在保持驱动电压数量不变的条件下，解决了相邻电极间电压分布不均的问题。实验采用光刻工艺分别制备新型电极与传统电极液晶透镜，使用干涉原理分析了两种结构的波前图与波前均方根误差（RMS），且对液晶透镜的位相分布及成像性能进行了分析。结果表明，新型电极结构成功消除了电压梯度不均匀现象，新型结构液晶透镜的波前图呈现规则的圆形分布，其波前RMS较传统结构降低约19.4%，且位相分布与成像性能均优于传统结构。本研究验证了电极结构优化对液晶透镜性能提升的有效性，为高精度可调焦光学器件的开发提供了技术方案。

Abstract

To address the problem of voltage gradient and phase distribution non-uniformity in traditional comb-electrode liquid crystal（LC） lens， this study designs a electrode structure to improve optical performance. By optimizing the electrode layout without increasing the number of driving voltages， the issue of uneven voltage distribution between adjacent electrodes is resolved. The novel and conventional electrode LC lens samples were fabricated via photolithography. Their wavefront patterns and root-mean-square（RMS） errors were then analyzed through interferometry. Finally， the phase distribution and imaging performance of the LC lenses were analyzed. The results show that the novel electrode structure eliminates voltage gradient unevenness. The wavefront pattern exhibits a regular circular distribution， with wavefront RMS reduced by approximately 19.4% compared to the conventional structure. Both phase distribution and imaging performance are improved. This study confirms the effectiveness of electrode structure optimization in enhancing LC lens performance， and offers a technical approach for developing high-precision tunable-focus optical devices.

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references

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