光重合性官能基被覆シリカナノ粒子を添加したポリイミド配向膜による液晶配向制御とディスプレイ応用

抄録

In this study we examine a newly proposed polymer-sustained LC alignment method in order to control arbitrarily the LC alignment. The method is based on the concurrent use of SiO2 nanoparticles whose surface is covered with UV curable functional group such as methacrylic one, which are embedded into the alignment layer of polyimide, and UV curable LC monomers added to a LC host material. We found that such kind of functionalized nanoparticles helps to form polymer network selectively at LC-alignment layer interface even at low concentration of UV curable LC monomers, leading to a change in pretilt angles.