Liquid Crystal Aligning Ability of Photosensitive Polymer Material

Abstract

In the present work the usefulness of photoalignment as a nematic liquid crystal aligning technique has been evaluated. A photocrosslinking mechanism of photosensitive polymer material has been used to cause anisotropy in the layer. The influence of the UV dose on the LC alignment of liquid crystal material in the TN-type cell has been examined.

Keywords:

• photoalignment
• photocrosslinking
• polyimide
• electrooptical characteristic

Acknowledgments

This paper was prepared with financial support from the Polish Ministry of Science and Higher Education, Key Project POIG.01.03.01-14-016/08 “New Photonic Materials and their Advanced Applications”. The Authors would like to thank Szymon Żuchowski for help in the manuscript preparation and Rafał Węgłowski for his valuable support in the preparation of Fig. 3.