Principle of polymer dispersed liquid crystal transparent projection screen

PEI Ling-hui; WANG Yu; FAN Zhi-xin

doi:10.3788/YJYXS20163106.0553

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Principle of polymer dispersed liquid crystal transparent projection screen

Material and Device | 更新时间：2020-08-12

- Principle of polymer dispersed liquid crystal transparent projection screen
- Chinese Journal of Liquid Crystals and Displays Vol. 31, Issue 6, Pages: 553-557(2016)
- 作者机构：
  
  河北工业大学理学院, 天津 300401
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20163106.0553
  CLC： O753.2;O433
- Received：10 November 2015，
  
  Revised：11 December 2015，
  
  Published：05 June 2016
- 稿件说明：
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裴伶会, 王宇, 范志新. 聚合物分散液晶透明投影屏幕成像原理研究[J]. 液晶与显示, 2016,31(6): 553-557

PEI Ling-hui, WANG Yu, FAN Zhi-xin. Principle of polymer dispersed liquid crystal transparent projection screen[J]. , 2016,31(6): 553-557
裴伶会, 王宇, 范志新. 聚合物分散液晶透明投影屏幕成像原理研究[J]. 液晶与显示, 2016,31(6): 553-557 DOI： 10.3788/YJYXS20163106.0553.

PEI Ling-hui, WANG Yu, FAN Zhi-xin. Principle of polymer dispersed liquid crystal transparent projection screen[J]. , 2016,31(6): 553-557 DOI： 10.3788/YJYXS20163106.0553.

摘要

对施加电场时呈透明态(ON态)的聚合物分散液晶(PDLC)膜用作透明投影屏幕的原理给出定性与定量的描述和分析。在PDLC-ON态测试样品的透光率随入射角变化曲线

发现S偏振光透光率不受PDLC膜的影响

P偏振光透光率随入射角变化受PDLC膜的影响衰减严重

发生散射。建立了P偏振光透光率随入射角度变化物理模型

给出了P偏振光的透光率的表达式。模拟计算得出理论曲线

与实验曲线相符合

进而解释了PDLC-ON态作为透明投影屏幕的成像原理。

Abstract

The principle of polymer dispersed liquid crystal film as transparent projection screen on the application of electric field (ON state) is described and analyzed qualitatively and quantitatively. The transmittance curves with incident angle of samples are tested at PDLC-ON state. It shows that the transmittance of S polarized light is not affected by the PDLC film

while the transmittance of P polarized light decreases obviously. The physical model of the change of P polarized light transmittance with the incident angle is established

and the expression of the transmittance of P polarized light is given. The theoretical curve fits well with the experimental curve

which explains the imaging principle of the PDLC ON state as the transparent projection screen.

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Keywords

references

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