Effect of nickel oxide doping on the optically driving liquid crystal display

SANG Jing-xin; LIANG Li-bing; ZHANG Yong-fang; LIU Yang; SUN Jia-tong; ZHAO Shu-guang; Vladimir CHIGRINOV

doi:10.37188/CJLCD.2022-0320

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Effect of nickel oxide doping on the optically driving liquid crystal display

LCD Technology | 更新时间：2023-03-15

- Effect of nickel oxide doping on the optically driving liquid crystal display
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 1, Pages: 40-48(2023)
- 作者机构：
  
  1.东华大学信息科学与技术学院，上海 201620
  2.香港科技大学先进显示与光电技术国家重点实验室，香港 999077
- 作者简介：
- 基金信息：
  
  Fundamental Research Funds for the Central Universities(22D210401);National Natural Science Foundation of China(61805035);Songjiang District Science and Technology Research Project(19SJKJGG82);China Scholarship Council （CSC）(202106630045);Fundamental Research Funds for the Central Universities and Graduate Student Innovation Fund of Donghua University(CUSF-DH-D-2022075)
- DOI：10.37188/CJLCD.2022-0320
  CLC：
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SANG Jing-xin, LIANG Li-bing, ZHANG Yong-fang, et al. Effect of nickel oxide doping on the optically driving liquid crystal display. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):40-48(2023)
DOI：

SANG Jing-xin, LIANG Li-bing, ZHANG Yong-fang, et al. Effect of nickel oxide doping on the optically driving liquid crystal display. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):40-48(2023) DOI： 10.37188/CJLCD.2022-0320.

摘要

光驱动液晶显示（optically driving liquid crystal display， ODLCD）通过偏振光控制液晶分子的取向来实现显示功能，它已经被广泛应用在各种光电器件中。然而，由于ODLCD较大的擦写时间和响应时间，它在实际应用中仍然受到了一定的限制。本文在ODLCD的光取向层azo dye（SD1）中掺杂了氧化镍（NiO）纳米粒子，并探究了NiO纳米粒子对ODLCD的擦写时间和响应时间的影响。同时，利用扫描电镜、透射电镜和原子力显微镜研究了NiO在SD1取向层的分布和微观形貌。实验结果表明，随着NiO浓度增加，NiO在SD1薄膜的粒径逐渐变大。在不同质量比（1∶0到1∶0.1）的SD1-NiO中，质量比为1∶0.08的SD1-NiO制备的ODLCD具有最小为6.8 s的擦写时间。此外，对于传统的电驱动液晶显示（liquid crystal display， LCD）应用中，掺杂比为1∶0.02的SD1-NiO所制备的ODLCD的响应时间被降低5 ms。

Abstract

The optically driving liquid crystal display （ODLCD） realizes display function by controlling the alignment directions of liquid crystal （LC） molecules under exposure light， which has applications in electric-optic （E-O） devices. However， it is still limited to the laboratory for its long rewriting time and response time of the ODLCD. In this work， the composite film with Nickel oxide （NiO） and azo dye （SD1） was fabricated， and the rewriting time and the response time of ODLCD depending on SD1 with NiO doping were studied. Meanwhile， the SD1-NiO distribution and morphology were discussed by scanning electron microscopy （SEM）， transmission electron microscopy （TEM）， and atomic force microscopy （AFM） images， respectively. The results show that the nanoparticle size of NiO increases with the concentration of NiO-SD1. Among the different ratios （1∶0 to 1∶0.1） of SD1-NiO concentration， the ratio of 1∶0.08 is optimal and a minimum rewriting time of 6.8 s has been reached. Besides， for the conventional electricity driven LCD application， the response time of ODLCD can be decreased to a maximum value of 5 ms at the optimal ratio （1∶0.02） between SD1 and NiO.

关键词

光驱动液晶显示光控取向氧化镍擦写时间响应时间

Keywords

optically driving liquid crystal displayphoto-alignmentnickel oxiderewriting timeresponse time

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