辊压法制备柔性双稳态液晶显示器件

夏亮; 徐琼; 陆红波; 唐龙祥; 邱龙臻

doi:10.3788/YJYXS20112605.0608

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辊压法制备柔性双稳态液晶显示器件

器件制备技术及器件物理 | 更新时间：2020-08-12

- 辊压法制备柔性双稳态液晶显示器件
- Fabricating Flexible Reflective Bistable LC Cells via Rolling Process
- 液晶与显示 2011年26卷第5期页码：608-611
- 作者机构：
  
  1. 特种显示技术教育部重点实验室,特种显示技术国家工程实验室,现代显示技术省部共建国家重点实验室培育基地, 合肥工业大学光电技术研究院,安徽合肥,230009
  2. 合肥工业大学化学工程学院高分子科学与工程系,安徽合肥,230009
- 作者简介：
- 基金信息：
  
  国家"();973"();计划前研专项(No. 2010CB334704)();国家自然科学基金(No.61040015)()
- DOI：10.3788/YJYXS20112605.0608
  中图分类号： O753+.2
- 收稿日期：2011-02-28，
  
  修回日期：2011-04-06，
  
  网络出版日期：2011-10-20，
  
  纸质出版日期：2011-10-20
- 稿件说明：
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夏亮, 徐琼, 陆红波, 唐龙祥, 邱龙臻. 辊压法制备柔性双稳态液晶显示器件[J]. 液晶与显示, 2011,26(5): 608-611

XIA Liang, XU Qiong, LU Hong-bo, TANG Long-xiang, QIU Long-zhen. Fabricating Flexible Reflective Bistable LC Cells via Rolling Process[J]. , 2011,26(5): 608-611
夏亮, 徐琼, 陆红波, 唐龙祥, 邱龙臻. 辊压法制备柔性双稳态液晶显示器件[J]. 液晶与显示, 2011,26(5): 608-611 DOI： 10.3788/YJYXS20112605.0608.

XIA Liang, XU Qiong, LU Hong-bo, TANG Long-xiang, QIU Long-zhen. Fabricating Flexible Reflective Bistable LC Cells via Rolling Process[J]. , 2011,26(5): 608-611 DOI： 10.3788/YJYXS20112605.0608.

摘要

基于PET塑料薄膜取代硬质玻璃作为基板材料制备柔性液晶盒时

采用传统制备工艺会产生盒厚度不均以及盒中残留气泡等现象

导致柔性液晶器件性能变差。采用辊压工艺可以有效地解决上述问题

文章对其工艺流程进行了详细描述。实验发现

通过在辊压工艺中加热两片基板以降低溶液的黏度

能够有效地避免气泡残留

获得厚度均匀的柔性液晶盒。应用辊压工艺和聚合物分散胆甾相液晶

成功地制备了尺寸为7 cm

的反射式柔性双稳态液晶盒。利用正交偏光显微镜观察了聚合物分散液晶的相形态

紫外分光光度计测试了其光电性能:最高反射率为22.8%

对比度为2.259

阈值电压为78 V

饱和电压为99 V。

Abstract

As substrate materials rigid glass is commonly replaced by PET plastic films for preparing flexible LC cells

the traditional process may cause nonuniform thickness and trap air bubbles in LC cells which deteriorate property of flexible LC device. These problems can be effectively solved by a rolling technique. The detail process has been described in this paper. It was found that the viscosity of solution was reduced by heating the two substrates which avoids the interfusion of air bubbles in the solution and results in LC cells with uniform thickness. 7 cm

-sized flexible reflective bistable LC cells are prepared successfully by polymer dispersed cholesteric liquid crystal method. Polymer dispersed cholesteric liquid crystal texture is studied by polarizing microscope. Electro-optical of flexible liquid crystal cell is measured by ultraviolet. The film provided with max reflectivity 22.8%

contrast 2.259

threshold voltage 78 V and saturation voltage 99 V.

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Keywords

references

Jang S J, Jung J W, Kim J H, et al. Pixel-isolated liquid-crystal mode by using a patterned anisotropic phase separation for flexible LCDs[J]. Journal of the SID, 2007,15(2):119-125.[2] Wang Q B, Guo R, Kumar S. Method for fabrication of liquid-crystal cells with narrow gap, fast switching, and flexible plastic substrates[J]. J. Soc. Inf. Display, 2006, 14(6):545-550.[3] Vorflusev V, Kumar S. Phase-separated composite films for liquid crystal displays[J].Science, 1999, 283(19): 1903-1905.[4] Sato H, Fujikake H, Sato F, et al. A4-sized flexible ferroelectric liquid-crystal displays with micro color filters[J]. Journal of SID, 2005, 13(6):461-468.[5] Carter S A, LeGrange J D, Wiltzius P, et al. Dependence of the morphology of polymer dispersed liquid crystals on the UV polymerization process[J]. J. Appl. Phys., 1997, 81(9): 5992-5999.[6] Kato K, Tanaka K, Tsuru S, Sakai S. Color image formation using polymer-dispersed cholesteric liquid crystal [J]. Jpn. J.Appl. Phys., 1993(32):4600-4604.[7] Huang Y P, Zhu X Y, Ren H W, et al. Full-color transflective cholesteric LCD with image-enhanced reflector[J]. J. Soc. Inf. Display, 2004, 12(4):417-422.[8] 刘国柱,黄子强,杨文君,等.低阈值电压聚合物分散性液晶膜的电光特性[J]. 液晶与显示, 2009, 24(3):383-388.[9] 王丽萍,许锐,黄顺刚,等.添加液晶对PDLC膜电-光性能参数的影响[J]. 液晶与显示, 2010,25(4):554-557.

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