篇目详细内容 |
【篇名】 |
Polyimide liquid crystal alignment layers prepared by soft-Lithography |
【刊名】 |
Frontiers of Chemistry in China |
【刊名缩写】 |
Front. Chem. China |
【ISSN】 |
1673-3495 |
【EISSN】 |
1673-3614 |
【DOI】 |
10.1007/s11458-007-0059-8 |
【出版社】 |
Higher Education Press and Springer-Verlag |
【出版年】 |
2007 |
【卷期】 |
2
卷3期 |
【页码】 |
318-321
页,共
4
页 |
【作者】 |
HE Yaning;
LIU Bin;
REN Hongfeng;
WANG Xiaogong;
|
【关键词】 |
PDMS; surface relief gratings; micro-contact printing; alignment layer |
【摘要】 |
Elastomeric replicas of surface relief structures were prepared by molding poly(dimethylsiloxane) (PDMS) precursors against photo-inscribed surface-relief-gratings on azo polymer films. The PI solutions were micro-contact printed with the elastomeric PDMS replica on quartz slides. Good surface-relief-grating structures were formed on the quartz slides. The quartz slides covered with surface-relief-grating polymide (PI) films were then assembled into liquid crystal (LC) cells. 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°. Results showed that the PI films with surface-relief-grating structures by this micro-contact printing process have good liquid crystal alignment ability. This preparation method of alignment layers can be considered a potentially useful technique in the LC display (LCD) industry in the future. |