Controlling the alignment of liquid crystals by nanoparticle-doped and UV-treated polyimide alignment films

Shie-Chang Jeng; Su-June Hwang; Tai-An Chen; Han-Shiang Liu; Mu-Zhe Chen

doi:10.1117/12.912827

10 February 2012 Controlling the alignment of liquid crystals by nanoparticle-doped and UV-treated polyimide alignment films

Shie-Chang Jeng, Su-June Hwang, Tai-An Chen, Han-Shiang Liu, Mu-Zhe Chen

Author Affiliations +

Proceedings Volume 8279, Emerging Liquid Crystal Technologies VII; 827912 (2012) https://doi.org/10.1117/12.912827
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We have developed two approaches for controlling the pretilt angles of liquid crystal molecules by using conventional polyimide (PI) alignment materials either doping homogeneous PIs with Polyhedral Oligomeric Silsequioxanes (POSS) nanoparticles or treating homeotropic PIs with ultraviolet light. These techniques are very simple and are compatible with current methods familiar in the LCD industry. The characteristics of modified PI alignment films and their applications for photonic devices are demonstrated in this paper.

Citation Download Citation

Shie-Chang Jeng, Su-June Hwang, Tai-An Chen, Han-Shiang Liu, and Mu-Zhe Chen "Controlling the alignment of liquid crystals by nanoparticle-doped and UV-treated polyimide alignment films", Proc. SPIE 8279, Emerging Liquid Crystal Technologies VII, 827912 (10 February 2012); https://doi.org/10.1117/12.912827

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