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

作　　者：夏亮[1,2] 徐琼[1,2] 陆红波[1] 唐龙祥[2] 邱龙臻[1] 

机构地区：[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

出　　处：《液晶与显示》2011年第5期608-611,共4页Chinese Journal of Liquid Crystals and Displays

基　　金：国家"973"计划前研专项(No.2010CB334704);国家自然科学基金(No.61040015)

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7cm2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78V,饱和电压为99V。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 cm2-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.

关 键 词：聚合物分散胆甾相液晶 柔性液晶盒 辊压法 光电性能 

分 类 号：O753.2[理学—晶体学]