聚合物稳定蓝相液晶器件的模拟计算模型

张波; 胡春鑫; 贾孟晓; 马红梅; 孙玉宝

doi:10.37188/CJLCD.2021-0235

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聚合物稳定蓝相液晶器件的模拟计算模型

器件物理与器件制备 | 更新时间：2021-12-10

- 聚合物稳定蓝相液晶器件的模拟计算模型
- Simulation model of polymer stabilized blue-phase liquid crystal devices
- 液晶与显示 2021年36卷第12期页码：1614-1622
- 作者机构：
  
  河北工业大学应用物理系, 天津 300401
- 作者简介：
  
  [ "张波(1995-), 女, 河北张家口人, 硕士研究生, 2019年于河北科技师范学院获得学士学位, 主要从事液晶与液晶器件等方面的研究。E-mail: 214317064@qq.com" ]
  [ "马红梅(1975-), 女, 河北邢台人, 博士, 教授, 2018年于河北工业大学获得博士学位, 主要从事液晶物理与液晶器件物理等方面的研究。E-mail: mhmtj@163.com" ]
  [ "孙玉宝(1975-), 男, 河北沧州人, 博士, 教授, 2010年于河北工业大学获得博士学位, 主要从事液晶器件物理和液晶的新型应用等方面的研究, E-mail: sun_yubao@163.com" ]
- 基金信息：
  
  国家重点研发计划(2018YFB0703701);国家自然科学基金(61475042)
- DOI：10.37188/CJLCD.2021-0235
  中图分类号： TP141.9
- 收稿日期：2021-09-06，
  
  修回日期：2021-09-18，
  
  纸质出版日期：2021-12
- 稿件说明：
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张波, 胡春鑫, 贾孟晓, 等. 聚合物稳定蓝相液晶器件的模拟计算模型[J]. 液晶与显示, 2021,36(12):1614-1622.

Bo ZHANG, Chun-xin HU, Meng-xiao JIA, et al. Simulation model of polymer stabilized blue-phase liquid crystal devices[J]. Chinese journal of liquid crystals and displays, 2021, 36(12): 1614-1622.
张波, 胡春鑫, 贾孟晓, 等. 聚合物稳定蓝相液晶器件的模拟计算模型[J]. 液晶与显示, 2021,36(12):1614-1622. DOI： 10.37188/CJLCD.2021-0235.

Bo ZHANG, Chun-xin HU, Meng-xiao JIA, et al. Simulation model of polymer stabilized blue-phase liquid crystal devices[J]. Chinese journal of liquid crystals and displays, 2021, 36(12): 1614-1622. DOI： 10.37188/CJLCD.2021-0235.

摘要

为更好地研究聚合物稳定蓝相液晶器件，在考虑聚合物和蓝相液晶的介电常数差异和电场作用的变化后，建立适用于聚合物稳定蓝相液晶显示器的理论模型。首先，针对两组聚合物配比的蓝相液晶显示器的实验结果，进行模拟计算拟合，获得了蓝相液晶的饱和双折射率接近于主体液晶双折射率的结果。然后，研究了聚合物单体的介电常数和含量对驱动电压的影响。最后，研究了共面电场驱动的聚合物稳定蓝相液晶显示器的电极宽度和间隙对驱动电压和透过率的影响，获得了高透过率和低驱动电压的器件结构。随着非液晶材料介电常数的增加，驱动电压下降，并且其质量分数越大，驱动电压下降幅度越大。对于一般蓝相液晶中非液晶材料质量分数约为10%质量分数的情况，驱动电压可以从97 V（

=3）下降到55 V（

=30），最大透过率变化很小，甚至可以忽略。并且非液晶材料的介电常数不同，仅影响驱动电压的大小，对最大透过率和电光曲线的形状影响很小。研究结果对优化聚合物稳定蓝相液晶的材料构成和改进聚合物稳定蓝相液晶器件有重要的指导意义。

Abstract

In order to better study the polymer stabilized blue phase liquid crystal devices

considering the difference of dielectric constant between polymer and blue phase liquid crystal and the change of electric field

we established a theoretical model suitable for polymer stabilized blue phase liquid crystal display. Firstly

we calculated the simulation result to fit the experiment results of blue phase liquid crystal displays with two group of polymer ratio

and obtained the saturation birefringence of blue phase liquid crystal close to the birefringence of liquid crystal. Then

we studied the influence of dielectric constant and content of polymer monomer on driving voltage. Finally

we calculated the influence of electrode width and gap on the operating voltage and transmittance of polymer stabilized blue phase liquid crystals devices driven by in-plane electric field

and obtained the device structure with high transmittance and low operating voltage. With the increasing dielectric constant of the non-liquid crystal material

the operating voltage is decreased

and the greater the content

the greater the operating voltage decreased. For the non-liquid crystal material content of the general blue liquid crystal being about 10%

the operating voltage can reduced from 97 V(

=3) to 55 V(

=30)

the change of the maximum transmittance is very small

even can be ignored. In addition

the different dielectric constant of non-liquid crystal materials only affect the operating voltage

and has a little effect on the maximum transmittance and the shape of electro-optic curve. The results have important guiding significance for optimizing the material composition of polymer stabilized blue phase liquid crystal and improving polymer stabilized blue phase liquid crystal devices.

关键词

Keywords

references

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