软光刻技术制备液晶显示用定向层  

LIQUID CRYSTALS ALIGNMENT LAYER PREPARED BY SOFT LITHOGRAPHY

作　　者：和亚宁[1] 刘斌[1] 任鸿烽[1] 王晓工[1] 

机构地区：[1]清华大学化工系高分子研究所教育部先进材料重点实验室,北京100084

出　　处：《高分子学报》2006年第7期908-911,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50273018)资助项目

摘　　要：以偶氮聚合物光致表面起伏光栅为模板,制备聚二甲基硅氧烷(PDMS)弹性印章,再以可溶性聚酰亚胺(PI)为“墨水”,在石英玻璃上压印出具有规则起伏结构的PI薄膜.由此制备的PI薄膜显示出很好的使液晶分子定向排列的效果.此方法成本低、效率高,是一种实用的液晶定向层薄膜制备方法.Elastomeric replica surface relief structures were prepared by molding poly （dimethylsiloxane） （PDMS） elastomers on the photo-inscribed surface-relief-gratings of azo polymer film. Then polymide （PI） solution was microcontact printing with the elastomeric PDMS on quartz slides. Good surface-relief-grating structures were formed on the quartz slides. Then the quartz slides covered with surface-relief-grating PI films were assembled to liquid crystal （LC） cell. The transmittance passing through the cell between crossed polarizers changed periodically with a regular 90° separation of the rotational angle. The pretilt angle of the cell was found to be 2.8°. The results showed that the PI film with surface-relief-grating structures by microcontact printing process has good liquid crystal alignment ability. This alignment method can be considered as potentially useful technology in the future LC display （LCD） industry.

关 键 词：聚二甲基硅氧烷 起伏光栅 微接触压印 定向层 

分 类 号：TN873[电子电信—信息与通信工程]