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34‐4: Figure of Merit for Optimizing the Performance of Uniform Lying Helix Cholesteric Liquid Crystals
Author(s) -
Tan Guanjun,
Lee Yun-Han,
Gou Fangwang,
Hu Minggang,
Lan Yi-Fen,
Tsai Cheng-Yeh,
Wu Shin-Tson
Publication year - 2017
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.11666
Subject(s) - figure of merit , transmittance , materials science , optics , helix (gastropod) , viewing angle , phase compensation , liquid crystal , compensation (psychology) , optoelectronics , liquid crystal display , physics , psychology , ecology , snail , phase noise , psychoanalysis , biology
The figure of merit (FoM) is defined to evaluate the performance of ULH devices. The trade‐offs between operation voltage, transmittance, and response time in uniform lying helix (ULH) cholesteric liquid crystals (CLC) are investigated. Excellent agreement between theory and experiment is achieved. The viewing angle of ULH displays is also studied. Our results give first quantitative demonstration that ULH exhibits a similar viewing angle to IPS. After phase compensation, the isocontrast ratio of ULH can reach >100:1 over 85° viewing cone.