Pretilt angle generation by UV exposure during imidization of polyimide

We investigated pretilt angle generation and liquid crystal (LC) alignment by ultraviolet exposure during the imidization of polyimide (PI). The generated pretilt angle of a nematic (N) LC using an in situ photo-alignment method is smaller than that using a conventional photo-alignment method on a s...

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Bibliographic Details
Published in:Liquid crystals 2001-02, Vol.28 (2), p.313-316
Main Authors: Seo, Dae-Shik, Kim, Hyung-Kyu, Jeon, Hee-Jong
Format: Article
Language:English
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Summary:We investigated pretilt angle generation and liquid crystal (LC) alignment by ultraviolet exposure during the imidization of polyimide (PI). The generated pretilt angle of a nematic (N) LC using an in situ photo-alignment method is smaller than that using a conventional photo-alignment method on a surface of PI having side chains. The NLC pretilt angles using an in situ photo-alignment method injected at isotropic phase increased with annealing were observed.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290010015306