Variable liquid crystal pretilt angles generated by photoalignment in homeotropically aligned azo dye-doped liquid crystals

Andy Ying Guey Fuh; Cheng Kai Liu; Ko Ting Cheng; Chi Lung Ting; Che Chang Chen; Paul Chang Po Chao; Hsu Kuan Hsu

doi:10.1063/1.3253413

Variable liquid crystal pretilt angles generated by photoalignment in homeotropically aligned azo dye-doped liquid crystals

Andy Ying Guey Fuh, Cheng Kai Liu, Ko Ting Cheng, Chi Lung Ting, Che Chang Chen, Paul Chang Po Chao, Hsu Kuan Hsu

光電科學與工程學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

25 引文斯高帕斯（Scopus）

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° to 63.5°), defined from the normal to the substrate. A no-bias pi cell for liquid crystal displays is demonstrated using this approach.

原文	???core.languages.en_GB???
文章編號	161104
期刊	Applied Physics Letters
卷	95
發行號	16
DOIs	https://doi.org/10.1063/1.3253413
出版狀態	已出版 - 2009

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10.1063/1.3253413

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title = "Variable liquid crystal pretilt angles generated by photoalignment in homeotropically aligned azo dye-doped liquid crystals",

abstract = "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° to 63.5°), defined from the normal to the substrate. A no-bias pi cell for liquid crystal displays is demonstrated using this approach.",

author = "Fuh, {Andy Ying Guey} and Liu, {Cheng Kai} and Cheng, {Ko Ting} and Ting, {Chi Lung} and Chen, {Che Chang} and Chao, {Paul Chang Po} and Hsu, {Hsu Kuan}",

note = "Funding Information: The authors would like to thank the National Science Council (NSC) of Taiwan for financially supporting this research under Grant No. NSC 95-2112-M-006-022-MY3. Additionally, this work is partially supported by Chi Mei Optoelectronics as well.",

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AU - Fuh, Andy Ying Guey

AU - Liu, Cheng Kai

AU - Cheng, Ko Ting

AU - Ting, Chi Lung

AU - Chen, Che Chang

AU - Chao, Paul Chang Po

AU - Hsu, Hsu Kuan

N1 - Funding Information: The authors would like to thank the National Science Council (NSC) of Taiwan for financially supporting this research under Grant No. NSC 95-2112-M-006-022-MY3. Additionally, this work is partially supported by Chi Mei Optoelectronics as well.

PY - 2009

Y1 - 2009

N2 - 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° to 63.5°), defined from the normal to the substrate. A no-bias pi cell for liquid crystal displays is demonstrated using this approach.

AB - 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° to 63.5°), defined from the normal to the substrate. A no-bias pi cell for liquid crystal displays is demonstrated using this approach.

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Variable liquid crystal pretilt angles generated by photoalignment in homeotropically aligned azo dye-doped liquid crystals

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