標題: Variable liquid crystal pretilt angles generated by photoalignment in homeotropically aligned azo dye-doped liquid crystals
作者: Fuh, Andy Ying-Guey
Liu, Cheng-Kai
Cheng, Ko-Ting
Ting, Chi-Lung
Chen, Che-Chang
Chao, Paul Chang-Po
Hsu, Hsu-Kuan
電機資訊學士班
Undergraduate Honors Program of Electrical Engineering and Computer Science
公開日期: 19-十月-2009
摘要: This letter demonstrates the feasibility of producing variable liquid crystal (LC) pretilt angles using light-induced ripple structures (LIRSs) in homeotropically aligned azo dye-doped liquid crystals (ADDLCs). Illuminating homeotropically aligned ADDLCs with a linearly polarized light for a suitable period yields the LIRSs which provide LCs an anisotropic homogeneous anchoring force. Experimentally, the effective alignment force produced by the homeotropic alignment layer and the LIRSs determines the LC pretilt angle (24 degrees to 63.5 degrees), defined from the normal to the substrate. A no-bias pi cell for liquid crystal displays is demonstrated using this approach. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3253413]
URI: http://dx.doi.org/10.1063/1.3253413
http://hdl.handle.net/11536/6559
ISSN: 0003-6951
DOI: 10.1063/1.3253413
期刊: APPLIED PHYSICS LETTERS
Volume: 95
Issue: 16
結束頁: 
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